509 & 511 power backhoes operator`s manual
Contents
1. 39 CYLINDER AND BUCKET SPECIFICATIONS eerren 40 PRE DELIVERY CHECK UIS Trocar gnenn i ed al eee 41 _ 43 6893 7 14 10 2 5 IS INTENTIONALLY BLANK 75475 GENERAL COMMENTS Congratulations on the purchase of your new BRADCO product This product was care fully designed and manufactured to give you many years of dependable service Only minor maintenance such as cleaning and lubricating is required to keep it in top working condition Be sure to observe all maintenance procedures and safety precautions in this manual and on any safety decals located on the product and on any equipment on which the attachment is mounted This manual has been designed to help you do a better safer job Read this manual carefully and become familiar with its contents WARNING Never let anyone operate this unit without reading the Safety Precautions and Operating Instructions sections of this manual A Always choose hard level ground to park the vehicle on and set the brake so the unit cannot roll Unless noted otherwise right and left sides are determined from the operator s control position when facing the attachment NOTE The illustrations and data used in this manual were current according to the information avail2. Sy BUCKET CYLINDER ENDS a 8 STABILIZER CYLINDER ENDS SY SWING CYLINDER END ony AND SWING TRUNNION PINS BOOM CYLINDER END AND BOOM CYLINDER PIN 5 BUSHINGS BY BOOM SWING POST PIVOT PIN Re MAINFRAME SWING POST PIVOT PINS 7487 1 25 06 3 75475 27 MAINTENANCE AND SERVICE GENERAL INFORMATION Regular maintenance is the key to long equipment life and safe operation Maintenance requirements have been reduced to an absolute minimum However it is very important that these maintenance functions be performed as described below EVERY 8 HOURS OF OPERATION Grease all swivel points ram and base end of all cylinders thoroughly Excessive wear and even mechanical damage to pins and cylinders can result from inadequate lubrication Use a multi purpose grease Lubricate all grease fittings with a multi purpose grease For grease locations refer to the diagram in the lubrication section of this manual EVERY 40 HOURS OF OPERATION Check hydraulic reservoir fluid level If oil is low check all lines fittings and control valve for signs of leakage IMPORTANT Hydraulic fluid level should be checked with backhoe in transport posi tion WARNING Escaping hydraulic diesel fluid under pressure can penetrate the skin caus ing serious injury DO NOT use your hand to check for leaks Use a piece of cardboard or pa per to search for leaks Stop engine and relieve
3. 4170 4247 OPERATION DECAL SWING SPEED CONTROL DECAL BOOM LOCK SWING LOCK LOCKED 4 G Tia 40249 PART 40219 PART 40249 BOOM LOCK DECAL SWING LOCK DECAL 6788 1 10 06 2 75475 DECALS IMPORTANT The backhoe bucket is capable of contacting this stabilizer and or cylinder Careful operation will avoid backhoe damage PART 4140 BUCKET CONTACT WARNING DECAL 1 888 258 0808 PART 40440 CALL BEFORE YOU DIG MADE IN USA PART 4338 MADE IN U S A DECAL PART 4084 GREASE 8 HOURS 6789 1 10 06 3 75475 11 A WARNING a 2 HIGH PRESSURE FLUID HAZARD To prevent serious injury or death Relieve pressure on system before repairing or adjusting or disconnecting Wear proper hand and eye protection when searching for leaks Use wood or cardboard instead of hands Keep all components good repair PART 40151 HIGH PRESSURE FLUID DECAL DANGER To Prevent Serious Injury or Death from Crushing Verify the backhoe is securely attached to the prime mover Check mounting bolts for tightness Visually check for proper pin engagement before operating 41169 PART 41169 DANGER BACKHOE SECURE IMPORTANT TO PREVENT BACKHOE DAMAGE DO NOT ATTACH TOW CHAIN TO DIPPER OR BUCKET DO NOT REPEATEDLY SLAM SWING POST INTO SWING STOPS PREPARATION FOR STORAGE LUBRICATE ALL GREASE POINTS LEAVE AS MANY CY
4. C Position is the standard digging position When the bucket is mounted in this position it will have 180 of rotation Digging positions are easily changed by removing the bucket link pivot pin from the bucket Realign the hole in the bucket link with the correct holes in the bucket for the desired results Install the pivot pin and secure it with the original washers and cotter pins and you re ready to go A special bell hole link is required to achieve a true bell hole position This part is avail able from your dealer 6895 1 25 06 2 30 15475 MAINTENANCE HOSE ROUTING 509 511 BACKHOE GENERAL INFORMATION The purpose of this page is to show the hydraulic hose routing between the backhoe control valve and the various backhoe hydraulic cylinders This information is helpful when trouble shooting cylinder and control valve related problems Simply match the number of the hydraulic cylinder port Shown the bottom diagram to the corresponding number on the backhoe control valve shown in the top diagram NOTE The fittings on the hydraulic ed i cylinders have been altered for clar ity purposes This will assist you in distinguishing between the rod end and the barrel end of the various hydraulic cylinders BACKHOE CYLINDERS 3 4 RIGHT STABILIZER 9 10 RIGHT STABILIZER 7488 7 14 10 3 75475 31 MAINTENANCE AND SERVICE CYLINDER SEAL REPLACEMENT The following information is provid
5. force of the backhoe WARNING Operate the backhoe only when seated at the controls Any other method could result in serious personal injury or death A Never attempt to drive the tractor when seated at the backhoe controls Check the prospective digging area for hidden utility lines before operating the backhoe or when in doubt of their location contact the local utility com panies When operating the backhoe in an area where utilities are expected to be present throttle the backhoe down and proceed with caution If you feel the backhoe bucket made contact with anything out of the ordinary stop digging at once Have the obstruction checked by hand If a utility line has been damaged contact the affected utility at once BEFORE YOU START DIGGING Before any excavating is started it is always a good idea to plan out the job first Vari ous things need to be considered and taken into account prior to the actual digging The operator should inspect the job site and take notice of any potential hazards in the area He should have a complete understanding of the tasks he is expected to perform Figure out what will be done with the spoil excavated soil will it be used to backfill or be trucked out What are the soil conditions like Will you have to work around others Etc Once you have become familiar with the job site and understand the job require ments it is time to set up for the actual digging Position the backhoe in such a way a
6. 9 202 231 273 7 313 5 6 8 8 108 130 146 3 176 2 132 150 178 9 203 3 186 205 252 277 8 206 242 279 1 327 9 213 249 288 6 337 4 246 289 333 3 391 6 10360 3 20 08 3 38 75475 SPECIFICATIONS 509 AND 511 POWER BACKHOES K gt BACKHOE DIMENSIONS SPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGE G WITHOUT NOTICE AND WITHOUT LIABILITY THEREFORE WHENEVER APPLICABLE SPECIFICATIONS ARE IN ACCORDANCE WITH SAE STAN DARDS ry BACKHOE SPECIFICATIONS TABLE TRANSPORT Transport Height with boom fully retracted Transport Width with stabilizers up B Ground Clearance C Overall Length Boom Pivot Height Operating Weight w 12 Bucket OPERATIONAL Digging Depth Maximum Digging Depth 2 Ft Flat Bottom Digging Depth 8 Ft Flat Bottom Overall Operating Height Fully Raised Loading Height Loading Reach Reach From Swing Post Bucket Rotation Swing Arc Straight Wall Digging Depth Stabilizer Spread Operating Position Stabilizer Down Below Grade System Relief Valve Setting Digging Force Bucket Cylinder Digging Force Dipper Cylinder 7490 1 26 06 3 75475 39 40 SPECIFICATIONS CYLINDER AND BUCKET SPECIFICATIONS 509 amp 511 POWER BACKHOE CYLINDER SPECIFICATION TABLE CYLINDER BUCKET CYLINDER Cylinder BONG marae ners 3 00 Rod Diameter 00 2 00 DIPPER CYLINDER Cylin
7. TO BLOW THROUGH AFTER WASHING SEE PULL INSTRUCTIONS IN OWNERS MANUAL PART 4271 INLINE FILTER DECAL 7478 17 14 10 4 75475 PRE OPERATION 509 amp 511 POWER BACKHOE GENERAL INFORMATION The purpose of this manual is to assist in setting up operating and maintaining your backhoe Read it carefully It furnishes information and instructions that will help you achieve years of dependable performance Right and left when referred to in this manual are determined from the operator s con trol position when facing the backhoe The illustrations and data used in this manual were current according to the information available to us at the time of printing however we reserve the right to redesign and change the backhoes as may be necessary without notification PREPARING THE VEHICLE WARNING Never let anyone operate this tractor and backhoe without understanding all of the Safety Precautions and Operating Instructions sections of this manual See Section B and G respectively Always choose hard level ground to park the tractor on and set the brake so that the tractor cannot roll BACKHOE Basic backhoes are shipped complete with bucket However several bucket options are available for the backhoe Refer to the table for proper identification of backhoe bucket options SEVERE DUTY POWER DIG BUCKET ASSEMBLIES 12 85012 16 85016 18 85018 20 85020 24 85024 Additional buckets available upon r
8. UTILITIES ARE Observe overhead electrical and other utility lines Be sure equipment will clear them When digging call your local utilities for location of buried utility lines gas water and sewer as well as any other hazard you may encounter ERALAN THE BACKHOE Block off work area from bystanders livestock etc Allow plenty of room for backhoe swing e Operate only from the operator s station e Use the backhoe only for digging Do not use the backhoe to pull things as a batter ing ram or attach ropes chains etc to the unit e Do not dig close to the stabilizers The ground could collapse from under the back hoe e Do not lift loads in excess of the capacity of the backhoe or prime mover When operating on slopes dig with the backhoe uphill and avoid swinging the backhoe to the downhill side Avoid steep hillside operation which could cause the prime mover to overturn e Reduce speed when driving over rough terrain a slope or turning to avoid overturning the vehicle e Do not adjust relief valve settings Incorrect valve settings could result in equipment damage and or personal injury e An operator must not use drugs or alcohol which can change his or her alertness coordination An operator taking prescription or over the counter drugs should seek medical advice on whether or not he or she can safely operate equipment e Before exiting the prime mover lower the backhoe bucket and stabilizers to the
9. YOU START DIGGING 17 18 BASIC DIGGING TECHNIQUES 2 19 20 SPECIAL APPLICATIONS 20 24 25 LUBRICATION LUBRICATION SYMBOLS AND DIAGRAM 26 27 MAINTENANCE AND SERVICE GENERAL 28 EVERY 28 EVERY 40 28 COIN TRO A 29 REPLACING BUCKET TOOTH 29 29 BUCKET DIGGING POSI IONS 30 HOSE ROUTING 31 CYLINDER SEAL REPLACEMENT 32 33 STORAGE 34 35 37 SPECIFICATIONS BOLT TORQUE SPECIFICATIONS 38 BACKHOE SPECIFICATIONS
10. connecting or dis connecting hydraulic hoses read your prime mover s operator s manual for detailed instructions on connecting and disconnecting hydraulic hoses or fittings e Keep unprotected body parts such as face eyes and arms as far away as possible from a suspected leak Flesh injected with hydraulic fluid may develop gangrene or other permanent disabilities e If injured by injected fluid see a doctor at once If your doctor is not familiar with this type of injury ask him to research it immediately to determine proper treat ment e Wear safety glasses protective clothing and use a piece of cardboard or wood when searching for hydraulic leaks DO NOT USE YOUR HANDS SEE ILLUSTRATION CARDBOARD HYDRAULIC HOSE OR FITTING MAGNIFYING GLASS 10339 8 16 05 6 75475 WARNING WARNING 75475 GENERAL SAFETY PRECAUTIONS DO NOT MODIFY MACHINE OR ATTACHMENTS Modifications may weaken the integrity of the attachment and may impair the func tion safety life and performance of the attachment When making repairs use only the manufacturer s genuine parts following authorized instructions Other parts may be substandard in fit and quality Never modify any ROPS Roll Over Protection Structure or FOPS Falling Object Protective Structure equipment or device Any modifications must be authorized in writing by the manufacturer SAFELY MAINTAIN AND REPAIR EQUIPMENT Do not wear loose clo
11. ground turn off the prime mover s engine remove the key and apply the brakes Be sure to engage boom swing locks before transporting backhoe to prevent uncontrolled movement e When driving on public roads use safety lights reflectors Slow Moving Vehicle signs etc to prevent accidents Check local government regulations that may affect you Do not drive close to ditches excavations etc cave in could result Do not smoke when refueling the prime mover Allow room the gas tank for expansion Wipe up any spilled fuel Secure cap tightly wnen done ee THE BACKHOE Before performing maintenance lower the attachment to the ground turn off the engine remove the key and apply the brakes e Never perform any work the attachment unless you are authorized and quali fied to do so Always read the operator service manual s before any repair is made After completing maintenance or repair check for correct functioning of the backhoe If not functioning properly always tag DO NOT OPERATE until all problems are corrected e Worn damaged or illegible safety decals must be replaced New safety decals can be ordered from BRADCO e Never make hydraulic repairs while the system is under pressure or cylinders under load Serious personal injury or death could result Never work under a raised attachment 10492 2 13 06 15475 DECALS DECAL PLACEMENT GENERAL INFORMATI
12. much material as possible to grade level Reset the unit forward and continue digging to the grade level Progress around the edge of the basement each corner as you come to it LY ne Ld Shy LLL Z 22 22 IMDM 1 25 06 2 75475 23 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES MISCELLANEOUS BACKFILLING To backfill an excavation lower the extended bucket into the spoil pile Curl the bucket and lift it clear of the spoil pile Swing the bucket to the excavation and extend the bucket Re turn the bucket to the spoil pile and continue the cycle until the job is completed IMPORTANT Do not backfill by using the swing circuit and dragging the bucket side ways Doing so could cause damage to the dipper boom and swing cylinders or main frame IMPORTANT Avoid constant jarring or hammering contact between the spoil pile and the loaded bucket as this may cause premature wear to the backhoe pins and bushings MISCELLANEOUS EXCAVATING BY A WALL To excavate by a wall where the wall will interfere with the stabilizer placement move the backhoe in at an angle to the wall Concentrate on getting the swing pin as close to the wall as possible while leaving enough swing arc left to dump the spoil frase ay 4 47 a 7 7 85 2 27 00 30 060 00 Oe TAA 49 222 MISCELLANEOUS H
13. ACKHOE GENERAL INFORMATION Economical and efficient operation of any machine is dependent upon regular and proper lubrication of all moving parts with a quality lubricant Neglect leads to reduced effi ciency heavy draft wear breakdown and needless replacement parts All parts provided with grease fittings should be lubricated as indicated If any grease fittings are missing replace them immediately Clean all fittings thoroughly before using grease gun IMPORTANT Avoid excessive greasing Dirt collects on exposed grease and greatly increases wear After greasing wipe off excessive grease from fittings LUBRICATION SYMBOLS The following symbol is used on the lubrication diagram printed on the following page It is reproduced here with its meaning for your convenience lt gt Lubricate daily or every 8 hours of operation whichever comes first with SAE CL Multi Purpose Lubricant or an equivalent SAE Multi Purpose type grease CAUTION Shut off vehicle engine before lubricating equipment 7486 1 25 06 3 26 75475 LUBRICATION 509 amp 511 BACKHOE BACKHOE LUBRICATION DIAGRAM The following diagram is provided to help you locate all the points on your backhoe that need lubricating Be sure to follow the lubrication intervals as noted by the lubrication symbols used on this page Always replace any missing grease fittings as soon as possible DIPPER CYLINDER ENDS lt BOOM DIPPER PIVOT PIN
14. ARD GROUND OPERATION When digging in hard ground it may be necessary to decrease the bucket angle of entry to the point where the back of the bucket almost contacts the ground It may also be neces sary to apply downward pressure with the boom on the bucket 3994 1 25 06 4 24 75475 OPERATING INSTRUCTIONS TRANSPORTING GENERAL INFORMATION Follow the simple steps listed below when preparing the backhoe for transportation between work sites Read and follow the safety precautions for backhoe transporting listed in safety section of this manual before moving the backhoe i Before transporting the backhoe raise the boom dipper and bucket to the transporting position 2 Engage the swing lock if so equipped by pushing down and to the left on the red swing lock ball handle 3 Engage the boom lock by moving the boom lock handle to the left down therefore lock ing the boom to the swing post in the transporting position 4 Raise all stabilizers CAUTION sure to install a SMV Slow Moving Vehicle sign the backhoe dipper before attempting to transport the backhoe When transporting the backhoe on a road or highway at night or during the day use accessory lights and devices for adequate warning to the operators of other vehicles In this regard check local government regulations Always drive slowly over uneven terrain to avoid tipping the backhoe 6747 1 25 06 3 75475 25 LUBRICATION 509 amp 511 B
15. LINDERS IN CLOSED POSITION AS POSSIBLE COVER ALL EXPOSED CYLINDER RODS WITH A LIGHT COAT OF GREASE 40257 PART 40257 IMPORTANT DECAL DECALS WARNING TO PREVENT SERIOUS INJURY OR DEATH Do operate or work this machine with out reading and understanding Operator s Manual Avoid unsafe operation or maintenance Do not operate machine with guards and covers removed This machine was designed to be operated by one operator Do not carry passengers on unit Before installing backhoe on your unit extend boom and dipperstick and lower bucket to ground Never use backhoe as manlift Operate backhoe control levers from opera tor s seat only Lower stabilizers and bucket to ground before leaving operator s seat Engage boom lock and swing lock before transporting backhoe 40255 PART 40255 OPERATIONAL WARNING DECAL DANGER To prevent serious injury death from pinching Keep all persons and objects clear while any part of this machine is in motion PART 40149 DANGER PINCH POINTS 6790 7 6 10 4 75475 DECALS BRADCO PART 40245 3 REQ D BRADCO LOGO SILBER 509 911 PART 40319 2 REQ D 511MODEL NUMBER 509 MODEL NUMBER SERVICE INFORMATION 4271 THIS AN 90 MICRON SINTERED BRONZE IF PLUGGED OR PARTIALLY ALLED IT WILL REDUCE BACKHOE PERFORMANCE REMOVE AND WASH OUT REGULARLY REPLACE ELEMENT 45133 IF DIFACULT
16. ON The diagrams on this page shows the location of all the decals used on the 500 series backhoes The decals are identified by their part numbers with reductions of the actual decals located on the following pages Use this information to order replacements for lost or damaged decals Be sure to read all decals before operating the backhoe They contain information you need to know for both safety and backhoe longevity 4368 40257 4247 If so Equipped 40255 4170 40440 40219 4271 LOCATED RIGHT LOCATED ON BACK SIDE OF BOOM Ve OF CONSOLE SERIAL NUMBER TAG 4338 4140 YY 40319 f 40356 J 40245 IMPORTANT Keep all safety signs clean and legible Replace all missing illegible or damaged safety signs When replacing parts with safety signs attached the safety signs must also be replaced REPLACING SAFETY SIGNS Clean the area of application with nonflammable solvent then wash the same area with soap and water Allow the surface to fully dry Remove the backing from the safety sign exposing the adhesive surface Apply the safety sign to the position shown in the diagram above and smooth out any bubbles 7477 7 10 4 75475 9 DECALS PART 4368 OPERATING CONTROLS DECAL PETCOCK OPEN TO RELIEVE PRESSURE WHEN SWING SPEED CONTROL HOOKING UP HYDRAULIC COUPLERS ALWAYS CLOSE PETCOCK BEFORE FAST SLOW OPERATING BACKHOE 4170 4247
17. VING YOUR PERSONAL SAFETY OR THE SAFETY OF OTHERS FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN INJURY OR DEATH A DANGER THIS SIGNAL WORD IS USED WHERE SERIOUS INJURY OR DEATH WILL RESULT IF THE INSTRUCTIONS ARE NOT FOLLOWED PROPERLY A WARNING THIS SIGNAL WORD IS USED WHERE SERIOUS INJURY OR DEATH COULD RESULT IF THE INSTRUCTIONS ARE NOT FOLLOWED PROPERLY A CAUTION THIS SIGNAL WORD IS USED WHERE MINOR INJURY COULD RESULT IF NOTICE WARNING 75475 THE INSTRUCTIONS ARE NOT FOLLOWED PROPERLY NOTICE INDICATES A PROPERTY DAMAGE MESSAGE GENERAL SAFETY PRECAUTIONS READ MANUAL PRIOR TO INSTALLATION Improper installation operation or maintenance of this equipment could result in serious injury or death Operators and maintenance personnel should read this man ual as well as all manuals related to this equipment and the prime mover thoroughly before beginning installation operation or maintenance FOLLOW ALL SAFETY INSTRUCTIONS IN THIS MANUAL AND THE PRIME MOVER S MANUAL S READ AND UNDERSTAND ALL SAFETY STATEMENTS Read all safety decals and safety statements in all manuals prior to operating or working on this equipment Know and obey all OSHA regulations local laws and other professional guidelines for your operation Know and follow good work practices when assembling maintaining repairing mounting removing or operating this equipment KNOW YOUR EQUIPMENT Know your equipment s cap
18. abilities dimensions and operations before operating Visually inspect your equipment before you start and never operate equipment that is not in proper working order with all safety devices intact Check all hardware to ensure it is tight Make certain that all locking pins latches and connection devices are properly installed and secured Remove and replace any damaged fatigued or excessively worn parts Make certain all safety decals are in place and are legible Keep decals clean and replace them if they become worn or hard to read 10338 8 16 05 5 GENERAL SAFETY PRECAUTIONS WARNING PROTECT AGAINST FLYING DEBRIS Always wear proper safety glasses goggles or a face shield when driving pins in or A out or when any operation causes dust flying debris or any other hazardous mate rial WARNING LOWER OR SUPPORT RAISED EQUIPMENT Do not work under raised booms without supporting them Do not use support mate rial made of concrete blocks logs buckets barrels or any other material that could suddenly collapse or shift positions Make sure support material is solid not de cayed warped twisted or tapered Lower booms to ground level or on blocks Lower booms and attachments to the ground before leaving the cab or operator s station WARNING USE CARE WITH HYDRAULIC FLUID PRESSURE Hydraulic fluid under pressure can penetrate the skin and cause serious injury or death Hydraulic leaks under pressure may not be visible Before
19. able to us at the time of printing however we reserve the right to rede sign and change the attachment as may be necessary without notification BEFORE OPERATION The primary responsibility for safety with this equipment falls to the operator Make sure the equipment is operated only by trained individuals that have read and understand this manual If there is any portion of this manual or function you do not understand contact your local authorized dealer or the manufacturer SAFETY ALERT SYMBOL This is the Safety Alert Symbol used by this industry This symbol is used to A warn of possible injury Be sure to read all warnings carefully They are included for your safety and for the safety of others working with you SERVICE When servicing your product remember to use only manufacturer replacement parts Substitute parts may not meet the standards required for safe dependable operation To facilitate parts ordering record the model and serial number of your unit in the space provided on the cover of this manual This information may be obtained from the identification plate located on the product The parts department needs this information to ensure that you receive the correct parts for your specific model 10344 8 20 05 75475 3 5 IS INTENTIONALLY BLANK 75475 SAFETY STATEMENTS THIS SYMBOL BY ITSELF OR WITH A WARNING WORD THROUGHOUT THIS MAN UAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOL
20. any unauthorized manner iii altered iv damaged v involved in an accident or vi repaired using parts not obtained through Paladin Light Construction 2 Warranty Period The Limited Warranty is provided only to those defects that occur during the Warranty Period which is the period that begins on the first to occur of i the date of initial purchase by an end user ii the date the product is first leased or rented or iii the date that is six 6 months after the date of shipment by Paladin Light Construction as evidenced by the invoiced shipment date the Commencement Date and ends on the date that is twenty four 24 months after the Commencement Date 3 Terms and Conditions of Limited Warranty The following terms and conditions apply to the Limited Warranty hereby provided a Option to Repair or Replace Paladin Light Construction shall have the option to repair or replace the product b Timely Repair and Notice In order to obtain the Limited Warranty i the product must be repaired within thirty 30 days from the date of failure and ii a claim under the warranty must be submitted to Paladin Light Construction in writing within thirty 30 days from the date of repair c Return of Defective or Product If requested by Paladin Light Construction the alleged defective part or product shall be shipped to Paladin Light Construction at its manufacturing facility or other location specified by Paladin Ligh
21. d sliding the tooth point off of the shank Install the new point and secure in place with the roll pin ROLL PIN TOOTH POINT A TOOTH SHANK o CHANGING BUCKETS The bucket is connected to the dipper and bucket link with two cotter pin style pins To change buckets remove the cotter pins and washers and then remove the old bucket and position the new bucket in its place Install the pivot pins and secure with washers and cotter pins Lubricate all bucket and bucket link grease fittings before operating NOTE Dipper Link must be installed with the with the pin containing the grease zerks at the dipper end and angled as shown in the diagram DIPPER LINK ANGLED DOWN a PIN WITH GREASE ZERKS DIPPER DIPPER LINK BUCKET LINK ANGLED DOWN 8771 1 25 06 2 75475 29 MAINTENANCE AND SERVICE DIGGING POSITIONS Power dig buckets may be installed in any one of three different digging positions By using the different pairs of bucket link mounting holes digging characteristics of the backhoe can be changed to suit the working conditions BUCKET LINK MOUNTING HOLES POWER DIG BUCKET A Position Ais the power digging position for maximum digging force in hard ground This position will give you a 20 percent increase in digging power over the standard position Position is the truck loading position It gives greater ease of spoil removal with a higher dump height than the standard or power dig position
22. d mounting the backhoe to the prime mover the dealer must review the proper mounting procedure and possible consequences of improper installation Verify the owner is in possession of an operator s manual and instruct them to read and understand all safety and operating techniques OWNERS RESPONSIBILITY It is the owner s responsibility to make sure that the dealer has completed this checklist and instructed him her on safe and proper operation of the backhoe If installation instructions are unclear bring backhoe mounting and prime mover to the equipment dealership for proper installation Owner s Signature Date Dealership Signature Date F 1228 5 14 10 41 75475 5 IS INTENTIONALLY BLANK Limited Warranty Except for the Excluded Products as described below all new products are warranted to be free from defects in material and or workmanship during the Warranty Period in accordance with and subject to the terms and conditions of this Limited Warranty 1 Excluded Products The following products are excluded from this Limited Warranty a Any cable part that engages with the ground i e sprockets digging chain bearing teeth tamping and or demolition head blade cutting edge pilot bit auger teeth and broom brush that either constitutes or is part of a product b Any product merchandise or component that in the opinion of Paladin Light Construction has been i misused ii modified in
23. der 12 3 00 Rod Diameter 2 2 0 1 75 BOOM CYLINDER Cylinder 2 75 Rod Diameter 1 50 SWING CYLINDER Cylinder x 2 50 SOKE 7 65 Rod Diameter 1 25 STABILIZER CYLINDER Cylinder 2 50 FROG Diameter 1 9075 1 50 POWER DIG BUCKETS AND CAPACITIES Bucket Struck Heaped Size Cap Ft Cap Ft Standard 12 1 43 1 83 Standard 16 1 98 2 56 Standard 18 2 25 2 98 Standard 20 2 52 3 40 Standard 24 3 07 4 32 Severe Duty 12 1 43 1 83 Severe Duty 16 1 98 2 56 Severe Duty 18 2 25 2 98 Severe Duty 20 2 52 3 40 Severe Duty 24 Weight Lbs 125 139 147 153 170 140 154 162 168 Number Of Teeth 7491 RRR RWO ORB BO 7 14 10 3 15475 BACKHOE CHECKLIST FOR USE WITH BACKHOES AND BACKHOE MOUNTING KITS DEALER RESPONSIBILITY The following check list is to be completed by the equipment dealer This checklist is to be completed by the dealer at time of delivery When purchasing a mounting kit for an existing backhoe it is the equipment dealers responsibility to review this checklist with the customer and instruct them to check each item at
24. e to replace all seals may result in premature cylinder failure NOTE Seal kits will service most cylinders of similar bore size and rod diameter 1 Install the cylinder rod seal in the gland first Be careful not to damage the seal in the process as it is somewhat difficult to install NOTE A special installation tool Part 65349 is available to help with installing the seal Simply fit the end of the tool over the seal so that the large prong of the tool is on the outside of the seal and the two smaller prongs on the inside The lip of the seal should be facing towards the tool Rotate the handles on the tool around to wrap the seal around the end of the tool END VIEW END VIEW LARGE PRONG CYLINDER RANC SMALL PRONG lt ROD NS SEAL j lt y CYLINDER ROD SEAL towards tool 10356 10 13 05 32 15475 MAINTENANCE AND SERVICE Now insert the seal into the gland from the inner end Position the seal in On CLARE its groove and release and remove the tool Press the seal into its seat the rest of the way by hand INSTALLATION TOOL 2 Install the new piston ring rod wiper O rings and backup washers if ap plicable on the piston O RING SIDE OF CYLINDER ROD SEAL Be careful not to damage the seals Caution must be used when installing the piston ring The ring must be stretched carefully over the piston with a smooth round pointed tool TEFLON RING 3 After installing the r
25. eason for the shallow cut is to minimize dam age to the sod and to facilitate replacement These first cuts are also important because they will act as guides for the remaining cuts thus getting the first few cuts as accurate as possible will help in keeping all future cuts accurate When digging with the backhoe extend the boom dipper and bucket out away from the operator Lower the boom and dipper to start the digging process The bucket teeth should be at a 30 to 45 entry angle As the digging starts curl the bucket until the cutting edge is level with the horizon Crowd the bucket in toward the operator working the bucket lever to keep the bucket level As the bucket moves toward the operator manipulate the boom lever to keep the cut level At the end of the digging cycle crowd the dipper out and completely curl the bucket while lifting it from the excavation Once you have cleared the excavation swing the bucket to the spoil pile Start to dump the bucket before the pile is approached Once the bucket is empty swing the unit back to the excavation positioning the bucket and dipper for the next cut in the process The whole digging process should be one smooth cycle that is repeated until the excavation is completed When the excavation has been dug to within six inches of the finished bottom clear and touch up the sides of the excavation Use the flat sides of the bucket to scrape off any high spots Dislodge any exposed rocks if t
26. ed to assist you in the event you should need to repair or rebuild a hy draulic cylinder When working on hydraulic cylinders make sure that the work area and tools are clean and free of dirt to prevent contamination of the hydraulic system and damage to the hydraulic cylinders Always protect the active part of the cylinder rod the chrome section Nicks or scratches on the surface of the rod could result in cylinder failure Clean all parts thoroughly with a cleaning solvent before reassembly DISASSEMBLY PROCEDURE IMPORTANT Do not contact the active surface of the cylinder rod with the vise Damage to the rod could result THREADED TYPE GLAND 1 Rotate the gland with a spanner wrench counterclockwise until the gland is free of the cylinder tube 2 Pull the cylinder rod from the cylinder tube and inspect the piston and the bore of the cylinder tube for deep scratches or galling If damaged the piston AND the cylinder tube must be replaced CYLINDER SPANNER TUBE WRENCH SPANNER WRENCH ROTATE INSPECT THREADED GLAND 7 INSPECT 3 Remove the hex nut piston flat washer or spacer tube if so equipped and gland from the cylinder rod If the cylinder rod is rusty scratched or bent it must be replaced 4 Remove and discard all the old seals DISCARD CYLINDER ROD GLAND 9 OS ae FLAT WASHER ASSEMBLY PROCEDURE IMPORTANT Replace all seals even if they do not appear to be damaged Failur
27. equest 7484 17 14 10 3 14 75475 PRE OPERATION NOMENCLATURE Throughout this manual reference is made to various backhoe components Study the following diagram to acquaint yourself with the various names of these components This knowledge will be help ful when reading through this manual or when ordering service parts STABILIZER CONTROL LEVERS BOOM amp SWING CONTROL LEVER BOOM LOCK BUCKET amp DIPPER CONTROL LEVER DIPPER CYLINDER Sy DIPPER A BUCKET ia CYLINDER CONSOLE COVER ys BUCKET LINK CONSOLE MAINFRAME STABILIZER BOOM CYLINDER 9 CYLINDER INSIDE BOOM CYLINDER SWING POST STABILIZER ARM GROUSER STABILIZER PAD BOOM BUCKET 10488 1 24 06 75475 15 OPERATING INSTRUCTIONS CONTROLS GENERAL INFORMATION Your backhoe is operated by four different control levers Two are for stabilizer opera tion and the other two operate the swing boom dipper and bucket functions The information contained below will help you become familiar with the operation of each control lever Read the Safety Precautions section of this manual before attempting to use the backhoe Remember right and left when referred to on this page are determined by the operator s posi tion seated at the backhoe controls facing the bucket BOOM SWING LEFT RIGHT DIPPER BUCKET CONTROL LEVER STABILIZERS CONTROL LEVER BACKHOE STABILIZER LEVERS Moving the
28. fication marks as per Bolt Size Pounds Feet Newton Meters Pounds Feet Newton Meters grade NOTE Manufacturing Marks Will Vary Mine UNF ee e O GRADE 2 GRADE 5 128 153 14 207 187 224 rans at n so es 803 zes 18 1037 1245 GRADE 8 ve 2558 eo vas 2 1014 1088 1224 1478 1690 a ats 92 1054 197 149 157 1700 2097 295 saos 1241 1428 1683 1936 2023 252 245 3135 142 3840 1644 1870 2236 2535 2686 3026 3642 4103 METRIC BOLT TORQUE SPECIFICATIONS NOTE The following torque values are for use with metric Bolt head identification marks as per grade hardware that is unplated and either dry or lubricated with engine oil Reduce torque 15 when using hardware that has extreme pressure lubricants plating or hard washer applications Size of Bolt Pitch mm Pounds Feet Newton Meters Pitch mm Pounds Feet Newton Meters 9 8 19 23 29 8 25 7 36 6 27 1 35 2 29 8 42 20 25 27 1 33 9 27 1 39 3 34 40 46 1 54 2 47 4 63 7 38 46 51 5 62 3 54 2 70 5 28 34 37 9 46 1 42 55 6 51 59 69 1 79 9 75 9 92 1 57 66 77 2 89 4 84 101 6 66 4 75 9 70 5 86 7 109 8 126 122 143 6 130 1 147 7 107 124 145 168 67 77 90 8 104 3 93 5 112 5 116 130 157 2 176 2 120 138 162 6 187 129 145 174 8 196 5 140 158 189 7 214 1 A 88 100 119 2 136 100 117 136 158 5 5 150 168 203 3 227 6 177 199 239 8 269 6 10 9 175 194 237 1 262
29. hey seem loose When finishing walls finish the far wall by curling the bucket out crowding the dipper out and forcing the bucket down To finish the closest wall lift the bucket up and curl it in 6880 1 25 06 2 75475 19 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES BASIC DIGGING TECHNIQUES CONTINUED 1 22 5 5 227 Once the sides cleaned up finish grading the bottom of the excavation This is done by making the remaining cuts long and shallow concentrating on making them level and smooth Remove any remaining spoil Check the excavation bottom for depth and levelness making any adjusting cuts as needed The basic steps just listed at the same regardless of the excavation All other digging jobs are simply variations of this basic procedure Remember to make your cuts in smooth cycles This will reduce operator fatigue and machine wear while increasing productivity and efficiency SPECIAL APPLICATIONS TRENCHING BETWEEN A BUILDING AND AN OPEN EXCAVATION Start the trench at the building and trench toward the open excavation Dig toward the open excavation until there is just enough room to move the unit out from between the trench and open excavation 6881 1 25 06 2 20 75475 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES TRENCHING BETWEEN A BUILDING AND AN OPEN EXCAVATION CONTINUED Position the unit so the backhoe s
30. ht WARNING Cylinders serviced in the field are to be tested for leakage prior to the attachment being placed in work Failure to test rebuilt cylinders could result in damage to the cylinder and or A the attachment cause severe personal injury or even death 10357 10 13 05 75475 33 MAINTENANCE AND SERVICE BACKHOE STORAGE To prepare the backhoe for storage first wash off all dirt and grime from the unit Coat the exposed portions of the cylinder rods with grease Lubricate all grease fittings Make sure the backhoe hydraulic system is properly sealed against contaminates entering the unit When storing the backhoe place the unit in a clean dry place with a cover over the unit if possible 7489 1 25 06 3 34 75475 PROBLEM Backhoe fails to lift or swing Backhoe lifting or swing ing too slowly 75475 TROUBLESHOOTING POSSIBLE CAUSE Low oil supply Improper hose hookup Worn control valve section Pump damaged or worn Broken hydraulic line Jammed swing linkage Bent cylinder rod Swing speed control completely closed Cold oil Engine speed too slow Oil leaking past control valve Oil too heavy Pump damaged or worn Oil leaking past cylinder packings Dirty oil filter Faulty relief valve Incorrect restrictors in valve REMEDY Add oil Check hydraulic diagram reinstall properly Replace section Replace pump Check for leaks and replace line Remove interference Replace or repair cyli
31. nder Open swing speed control valve Warm oil with engine at idle speed Open throttle Replace or repair worn section Use recommended oil Replace or repair pump Replace packings Replace filter Clean or replace Check restrictor orifice size with those shown on valve assembly page 6828 1 25 06 3 35 PROBLEM Backhoe fails to hold up load Oil heating 36 TROUBLESHOOTING POSSIBLE CAUSE Broken or leaking lines Dirty oil Oil leaking past cylinder packings Oil leaking past control valve Faulty relief valve Dirty oil Air entering suction line to pump Partially plugged inlet filter Control valve held open too long Worn pump Relief valve set too low Oil too light in hot weather Engine running too fast Damaged oil lines Poor operating technique causing excessive oil flow over relief valve Damaged O rings between valve sections Gresen REMEDY Replace broken hose and check for leaks Drain and refill oil replace filter Replace packings Replace or repair worn section Clean or replace Drain and refill oil replace filter Eliminate leaks Clean filter element Return control to neutral position when not in use Replace pump Set valve correctly Use recommended oil Reduce throttle Replace damaged lines Learn smooth operating methods Repair control valve 3912 1 25 06 3 75475 PROBLEM External leakage Swing cylinder malfunctioning Control
32. od seal inside the gland as shown step 1 install the external seal NOTE Threaded glands may have been equipped with a separate O ring and backup washer system or a polypak all in one type seal Current seal kits con tain a polypak all in one type seal to replace the discarded seal types on ALL THREADED GLANDS 4 Slide the gland onto the cylinder rod being careful not to damage the rod wiper Then install the spacer or flat washer if so equipped small o ring piston and hex nut onto the end of the cylinder rod 5 Secure the cylinder rod mounting end in a vise with a support at its center Torque the nut to the amount shown for the thread diameter of the cylinder 5 9 rod see chart RO Thread Diameter POUNDS FEET 7 8 150 200 41 230 325 1 1 8 350 480 1 1 4 490 670 1 3 8 670 900 1 Thread Diameter WITH 1 25 Rod Diameter Min 230 ft Ibs Max 250 ft Ibs IMPORTANT Do not contact the active surface of the cylinder rod with the vise Damage to the rod could result 6 Apply a lubricant such as Lubriplate 105 to the piston and teflon ring Insert the cylinder rod assembly into the cylinder tube IMPORTANT Ensure that the piston ring fits squarely into the cylinder tube and piston groove otherwise the ring may be damaged and a leak will occur 7 Use a spanner wrench to rotate the gland clockwise into the cylinder Continue to rotate the gland with the spanner wrench it is tig
33. pressure before connecting or disconnecting lines Tighten all connections before starting engine or pressurizing lines If any hydraulic diesel fluid is injected into the skin obtain medical atten tion immediately or gangrene or other serious injury will result HYDRAULIC HOSE OR FITTING MAGNIFYING GLASS Physically check all pins bushings cotter pins nuts etc for signs of wear or loose fit Tighten as required replacing where necessary Bolts and pins may vibrate loose during operation Clean equipment of all dirt oil and excess grease This will assist you in making visual inspections and help avoid overlooking worn or damaged components 6748 1 25 06 3 28 75475 MAINTENANCE AND SERVICE CONTROL VALVE The hydraulic control valve maintenance in normally limited to replacement of O ring seals cleaning and the replacement of valve sections Gresen or relief valve cartridges The most common cause of premature wear and malfunctioning of hydraulic system components is the ingress on contaminants and incorrect high pressure inlet and low pressure return connections cavitation Observe a high standard of cleanliness when doing valve maintenance REPLACING BUCKET TOOTH POINTS The bucket teeth are self sharpening and require little attention however the points on the bucket teeth shanks can be replaced when they become worn or broken A tooth point can be removed from the welded tooth shank by removing the roll pin an
34. s to minimize repositioning the unit and to maximize digging efficiency Consider the placement of spoil and position the backhoe to be able to dig the maximum amount of soil accurately while leaving enough room for the spoil removed to be piled in the desired area 6758 1 25 06 2 75475 17 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES BEFORE YOU START DIGGING CONTINUED Once the unit is positioned lower the stabilizers to the ground The tires should still be supporting most of the vehicle weight with the stabilizers relieving only part of the weight and mainly acting to give the unit a wider base for increased stability and to keep the unit from moving or bouncing with backhoe use The front end loader should also be lowered if the unit is so equipped The vehicle should at no time be supported by the stabilizers and loader with any of its wheels off the ground Severe damage to the vehicle could result When operat ing the unit on a delicate surface such as concrete or stone work or on sandy loose or soft ground place plywood under the stabilizers to help distribute the load over a wider area rT w ae 4 6879 1 25 06 2 18 75475 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES BASIC DIGGING TECHNIQUE When starting an excavation make the first cut of each section shallow being careful to follow the exact layout of the excavation The r
35. stabilizer lever s forward will bring the backhoe stabilizers Down Moving the stabilizer lever s rearward will raise the backhoe stabilizers Up Both stabilizers are required to be down for proper stability of the backhoe when in operation BOOM SWING LEVER LEFT HAND LEVER Pushing the boom swing lever forward will Lower the boom dipstick and bucket Pulling the lever rearward will Lift the boom dipstick and bucket Pushing the boom swing lever to the left will swing the boom and bucket to the Left Pushing the lever to the right will swing the boom and bucket to the Right DIPPER BUCKET LEVER RIGHT HAND LEVER Pushing the dipper bucket lever forward will move the dipper Out or away from the operator Pulling the lever rearward will move crowd the dipper In or toward the operator Pushing the dipper bucket lever to the left will Fill or curl the bucket move inward Pushing the lever to the right will Dump the bucket move outward 3958 1 25 06 3 16 15475 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES GENERAL INFORMATION When operating the backhoe smoothness of technique should be strived for at all times Smoothness will come with experience and practice at feathering the controls Estab lish a flowing digging cycle to increase operator efficiency and save unnecessary wear on the machine Observe the following points to obtain the best results and to fully utilize the digging
36. t Construction with freight PRE PAID by the claimant to allow Paladin Light Construction to inspect the part or product Claims that fail to comply with any of the above terms and conditions shall be denied LIMITATIONS AND EXCLUSIONS THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND ANY WARRANTY BASED ON A COURSE OF DEALING OR USAGE OF TRADE IN NO EVENT SHALL PALADIN LIGHT CONSTRUCTION BE LIABLE FOR CONSEQUENTIAL OR SPECIAL DAMAGES IN NO EVENT SHALL PALADIN LIGHT CONSTRUCTION BE LIABLE FOR ANY LOSS OR CLAIM IN AN AMOUNT IN EXCESS OF THE PURCHASE PRICE OR AT THE OPTION OF PALADIN LIGHT CONSTRUCTION THE REPAIR OR REPLACEMENT OF THE PARTICULAR PRODUCT ON WHICH ANY CLAIM OF LOSS OR DAMAGE IS BASED THIS LIMITATION OF LIABILITY APPLIES IRRESPECTIVE OF WHETHER THE CLAIM IS BASED ON BREACH OF CONTRACT BREACH OF WARRANTY NEGLIGENCE OR OTHER CAUSE AND WHETHER THE ALLEGED DEFECT IS DISCOVERABLE OR LATENT TAttachment Technologies Inc a subsidiary of Paladin Brands Holding Inc is referred to herein as Paladin Light Construction February 10 2010 75475 43
37. thing or any accessories that can catch in moving parts If you have long hair cover or secure it so that it does not become entangled in the equipment e Work a level surface in a well lit area e Use properly grounded electrical outlets and tools e Use the correct tools for the job at hand Make sure they in good condition for the task required e Wear the protective equipment specified by the tool manufacturer SAFELY OPERATE EQUIPMENT Do not operate equipment until you are completely trained by a qualified operator in how to use the controls know its capabilities dimensions and all safety require ments See your machine s manual for these instructions e Keep all step plates grab bars pedals and controls free of dirt grease debris and oil e Never allow anyone to be around the equipment when it is operating e Do not allow riders the attachment or the prime mover Do not operate the equipment from anywhere other than the correct operator s position e Never leave equipment unattended with the engine running or with this attach ment in a raised position e Do not alter or remove any safety feature from the prime mover or this attach ment e Know your work site safety rules as well as traffic rules and flow When in doubt on any safety issue contact your supervisor or safety coordinator for an explana tion 10340 8 16 05 7 WARNING EQUIPMENT SAFETY PRECAUTIONS KNOW WHERE
38. time of installation onto their prime mover BACKHOE Check and lubricate backhoe See Lubrication Section in Operator s Manual Visually inspect the backhoe for bent loose cracked damaged or missing parts or any other irregularities prior to operation Verify backhoe control lever function and direction of operation are in accordance with the control lever decals Run cylinders through their full cycle to purge any air from the system Recheck hydraulic system for cor rect hydraulic fluid levels Check all hydraulic connections for leaks and all hoses for proper positioning to reduce chafing and bind ing Check prime mover system relief valve pressure and compare and adjust to recommended operating pressure listed in the Specifications Section of the Operator s Manual Make sure decals are not damaged or missing and are in their right location See Decals Section of the Operator s Manual Customer instructed to read and understand Operator s Manual before operating backhoe Complete and return the manufacturers Warranty Validation Form MOUNTING Check backhoe mounting and prime mover to ensure they are all compatible Check backhoe mounting bolts for tightness Instruct owner to retighten after the first eight working hours and after every forty working hour interval thereafter See Bolt Torque Specifications in Opera tor s Manual If customer is installing the mounts an
39. valve sticking or working hard 75475 TROUBLESHOOTING POSSIBLE CAUSE Control valve tie bolts loose Gresen Damaged O rings between valve sections Gresen Damaged O rings on valve spools Cylinder seals damaged Damaged O rings on valve drop check Broken oil lines Oil leaking past packing or seals Faulty relief valve Dirty valve Scored bore or bent spool Control linkage misaligned Control valve tie bolts too too tight Return spring binding broken Foreign matter in spool bore REMEDY Torque bolts to 20 ft Ibs Repair control valve Repair control valve Repair cylinder Repair control valve Replace hose and check for leaks Replace packing or seals Clean or replace Clean valve Inspect and replace spool valve section Gresen or entire valve Correct misalignment Tighten bolts only to 20 165 Replace spring Clean valve 3913 1 25 06 2 37 BOLT TORQUE SPECIFICATIONS GENERAL TORQUE SPECIFICATION TABLES Use the following charts when determining bolt torque specifications when special torques are not given Always use grade 5 or better when replacing bolts SAE BOLT TORQUE SPECIFICATIONS NOTE The following torque values are for use with extreme pressure lubricants plating or hard washer applications Increase torque 15 when using hardware that is unplated and either dry or lubricated with engine oil SAE GRADE 5 TORQUE SAE GRADE 8 TORQUE Bolt head identi
40. wa BRADCO BRADCO F HARLEY 5 SWEEPSTER The Power of Combined Excellence 509 511 POWER BACKHOES OPERATOR S MANUAL SERIAL NUMBER Manual Number 575 Part Number 75475 MODEL NUMBER Rev 4 800 456 7100 www paladinicg com 503 Gay Street Delhi IA 52223 United States of America 7483 7 14 10 6 TABLE OF CONTENTS POWER BACKHOES PREFACE 3 SAFETY PRECAUTIONS SAFETY STATEMENT a a a 5 5 7 8 DECALS DECAL PLACEMENT ctescieictestcccccccausetemetectvaetesacetatvauseneidcncedadsetecnntdadedadvauneeaiepucmscacaides 9 10 13 PRE OPERATION GENERAL INFORMATION 22 2 14 14 5 14 NOMENCLATURE mron 15 OPERATING INSTRUCTIONS 5 lt 16 CONTROLS iaria a 16 BEFORE
41. wing post is over the center line of the trench con nection Dig with the backhoe at extreme swing positions and in as close to the stabilizers as possible Pile the soil on the opposite side of the trenches 41 Position the unit forward so the two trenches be connected Pile the spoil on the opposite side of the trench 3991 1 25 06 4 75475 21 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES EXCAVATING ON SLOPES When digging on slopes always face the backhoe upgrade whenever possible It may be necessary to cut a level surface in the hill for the backhoe to sit in when operating on slopes This will allow the backhoe to sit level for digging the main excavation Pile the spoil from the surface downhill When digging the main excavation pile the spoil uphill 6882 1 25 06 2 22 15475 OPERATING INSTRUCTIONS OPERATING TECHNIQUES ATTACHMENT TYPE BACKHOES PIPELINE LEAK REPAIR To aheck fot Stati by digging a bellhole about six feet wide and ten feet long Then dig lengthwise along the pipeline to locate the leak Once the leak is located position the unit to dig at grade level on both sides of the pipeline If a section of pipe is to be replaced strip the soil from both ends of the bellhole Enlarge the hole enough to allow the workmen adequate working space in the leak area DIGGING STRAIGHT WALL SHALLOW BASEMENTS Begin at one corner and remove as
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