Harbor Freight Tools 91839 User's Manual
Contents
1. in place add a Washer 50 and a Spindle Nut 51 onto the ends of the Axles Tighten the Spindle Nuts 51 to 20 25 ft pounds and turn each tire several times to seat the bearing Back off the Spindle Nut 51 one half turn Insert a Cotter Pin 25 through both the Axle and the Spindle Nut 51 and bend the end of the Pin back to hold it in place Lastly tap on a Wheel Cap 61 The Tire 48 assembly is now complete Note It may be necessary to reset the wheel bearings after the Log Splitter has been towed The wheel manufacturer states the maximum speed is not to exceed 40 MPH The tires are DOT approved for public roads however this item is not for use on public roads or highways REV 11 04 91839 91840 SKUS 92199 For replacement parts please call 1 800 444 3353 Page 4 Assembly continued Connecting the Rail Assembly 2 to the Oil Tank Assembly 10B 1 Insert the Front Leg Assembly 11 into the bracket on the Oil Tank Assembly 10B Insert the remaining Hex Head Bolt 16 through the hole in the middle of the bracket of the Oil Tank Assembly 10B Secure it with a Hex Head Nut 17 Refer to the Hex Head Nut 17 attached to the Hex Head Bolt 16 at the top of the Front Leg Assembly 11 in FIGURE 1 below Note When travelling remove the Push Pin 26 and Hair Pin Clip 29 and lift the Front Leg Assembly up so that it is parallel to the Rail Assem bly 2 Then replace the Push Pin 26 and Hair Pin Clip 292. into the Horizontal Transport Hole shown just above the Oil Plug 37 in FIGURES 1 and 2 2 To connect the Rail Assembly 2 to the Oil Tank Assembly 10B insert a Hex Head Bolt 16 into the middle hole of the L shaped bracket on the Oil Tank Assembly 10B Secure it with a Hex Head Nut 17 Refer to the Hex Head Nut 17 attached to the Hex Head Bolt 16 just above the tire in FIGURE 1 below Insert the Push Pin 26 through the hole as shown in FIGURE 3 3 In FIGURES 1 and 2 the Rail Assembly 2 is shown in Horizontal mode for operation and travel as mentioned above the Front Leg Assembly 11 must be secured up in the horizontal position when travelling For vertical operation see page 6 FIGURE 1 Slide Assembly 3 Safety Chain with Hook 4 Cylinder 1 Place Log Here eS Hitch Coupler 9 ae Hex Head Nut 17 is attached to Hex Head Bolt 16 APERTA mri Horizontal transport hole Fu Rail Assembly 2 Push Pin 26 and __ Push Pin 26 Vertical Position Hole Hair Pin Clip 29 Oil Plug 37 Hex Head Nut 17 is attached with air inlet hole i to Hex Head Bolt 16 Front Leg Assembly 11 4 7 A Vertical position J locking hole Oil Removal Plug Wheel Cap 61 Second Push Pin 26 secures Rail Assembly 2 and is removed for vertical log splitting Z Air Inlet Hole Push a Oil Tank 10B Close up
3. of Push Pin 26 securing the Oil Plug 37 Front Leg Assembly 11 to the bracket with air inlet hole on the Oil Tank Assembly 10B 91839 91840 SKUS 92199 For replacement parts please call 1 800 444 3353 Page 5 Transportation CAUTION When transporting the Log Splitter make sure Care must be taken when backing up pati the Trailer only back up the trailer on a oul hitch not included is compatible with the straight path If the Trailer is allowed to turn Hitch Coupler 9 Follow all of the safety warn off the straight path while backing up the Trailer ings for towing in your vehicle s manual Always could jackknife causing severe damage to the use the Safety Chain with Hook 4 when towing trailer and to the towing vehicle a vehicle Do not tow the Log Splitter at soeeds above 45 MPH As mentioned in number 2 on page 5 always travel with the Front Leg Assembly 11 in the horizontal position The Rail Assembly 2 must always be secured in the horizontal position for travelling Note Make sure the air inlet hole on the Oil Plug 37 is covered when transporting See FIGURE 3 on page 5 and refer to number 2 in Operation below Pull up and down on the Hitch Coupler to make sure the hitch ball is fitting snugly in the Hitch Coupler There should be no play between the hitch ball and Hitch Coupler If there is play tighten the Adjustment Nut until no play is present If the Adjustment Nut i
4. or other reproductive harm California Health amp Safety Code 25249 5 et seq 24 People with pacemakers should consult their physician s before using this prod uct Electromagnetic fields in close proximity to a heart pacemaker could cause interference to or failure of the pacemaker Warning The warnings cautions and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be under stood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator Unpacking When unpacking check to make sure the parts listed on page 9 are included If any parts are missing or broken please call Harbor Freight Tools at the number on the cover of this manual as soon as possible Assembly Note Because of the weight and size of the Log Splitter assembly should be done with the help of another person Attaching the Tires Refer to the Assembly Drawing on page 9 and FIGURE 1 on page 5 1 Position the Tires 48 next to each of the Axles located on the bottom of the Oil Tank Assembly 10 The Tires 48 come completely assembled 2 Make certain to pack the bearings as explained in the included insert 3 Put a Seal 59 and Bearing 49 on the Axle and then put the Tire 48 on the Axle 4 Follow the Bearing Packing Instructions as explained on the last page of this manual With each Tire 48
5. CENTRAL HYDRAULICS LOG SPLITTER WITH ROBIN ENGINE MODELS 91839 91840 amp 92199 ASSEMBLY AND OPERATING INSTRUCTIONS WARNING IMPORTANT INFORMATION This trailers Hitch Coupler MUST be properly secured to the hitch ball of the towing vehicle After assembly and attachment pull up and down on the Hitch Coupler to make sure the hitch ball is fitting snugly in the Hitch Coupler There must be no play between the hitch ball and Hitch Coupler If there is play tighten the Adjustment Nut until no play is present If the Adjustment Nut is too tight the Handle will not lock Carefully read and follow the complete instructions in this manual BEFORE setup or use If the Coupler is not secured properly the ball could come loose while the trailer is in motion possibly causing property damage SERIOUS PERSONAL INJURY or DEATH 3491 Mission Oaks Blvd Camarillo CA 93011 Visit our Web site at http www harborfreight com Copyright 2004 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools For technical questions and replacement parts please call 1 800 444 3353 REV 11 04 REV 02 06 Specifications Log Capacity 25 Long 8 Diameter 60 PSI Cold Overall Dimensions 79 1 4 x 42 1 2 x 37 1 4 Wedge Size 7 1 8 Tall Hydraulic Fluid 2 5 Gallons Toe Plate T
6. MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER NOR DISTRIBU TOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACE MENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARIS ING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO NOTE Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts 91839 91840 SKUs 92199 For replacement parts please call 1 800 444 3353 0 7e Page 9 Assembly Drawing 07e 91839 91840 amp 92199 SKUs For replacement parts please call 1 800 444 3353 Page 10 Hydraulic Ram Seals Warning Only a qualified technician should repair or service the internal hydraulic system of this unit DESC 30TON ay O ring seal 118 5 3 O ring seal 38 5x3 55 J type rubber seal J type rubber seal 45x70x12 50x75x12 Y type seal 50x70x10 O ring seal 50x3 55 nylon nylon washer115x106x2 washer127x118x2 1 6 Jl 14 01 7 01 6 FOF FP PP Ok PP
7. PF EEEF i FF GF FGF FF iF UF GF FF FGF FGF FF iF FF FF GF GF FF FF iF PF GF FF OF FF PF GF PF GF PO UP OO OO OO a Oa a a OT Fo a ae oP PP POP GP FF PP OP PGP FFF FF oF PF OF PF GF FF GF FF OF FF FF FGF oF GF a PF GP FP if FF PF oa ee 140 30TON 770C30TOND MAX658 Seal Kits 91840 28872 _ REV 10 05 Page 11 164 30TOND For replacement parts please call 1 800 444 3353 91839 91840 amp 92199 SKUs Hydraulics Drawing SOLID LINE HIGH PRESSURE DASHED LINE LOW PRESSURE RETURN QIL TANK a ee eA i re Po a Prr ma CYLINDER Bearing Packing Instructions Important Read and adhere to the following instructions failure to read and obey all of the following instructions COMPLETELY will void the warranty and can result in damage to the trailer property damage or SERIOUS PERSONAL INJURY Whenever a hub is disassembled if a hub on a new unit requires assembly or a hub is disassembled for maintenance the following procedure MUST be followed 1 SKUs Using a suitable solvent thoroughly clean the bearings and the rest of the parts in the Hub assembly of all grease dirt metal shavings or any other foreign object The parts must be cleaned even if they are new or appear clean Allow all pieces to dry completely Make sure that your hands are thoroughly clean and the bearing packer not included is also thoroughly clean Place fresh clean bearing grease in the pac
8. call 1 800 444 3353 Page 8 Parts List When ordering parts be certain to note which Sku number they are for 4 Safety Chain With Hook Hose Clamp Slide Guide Slide Retainer Bolt 1 2 2 1 2 Hex Nut 1 2 Hitch Coupler Oil Tank Assembly Front Leg Assembly Hex Head Bolt 1 2 1 3 4 Hex Nut 1 2 Hex Head Nut 3 8 Washer 1 2 Hex Head Bolt 9 16 1 1 4 Hex Nut 9 16 Washer Hex Head Bolt 5 16 2 3 4 Hex Head Nut 3 8 O Ring Seal Hex Head Bolt 1 2 1 3 4 Hex Nut 5 16 Spring Washer 5 16 8 Cotter Pin E Push Pin Ea Clevis Pin E3 Hair Pin Clip Hair Pin Clip 2 5 Slide Holder Hydraulic Tubing Male Connector Oil Plug High Pressure Fitting 90 Elbow Fitting 2 90 Elbow Fitting 3 Hex Head Bolt 3 8 3 4 Hex Head Bolt 5 16 1 Oil Filter ump Mounting Bracket N Pump Hex Head Bolt 5 16 1 Hex Head Bolt 3 8 3 1 4 Tire Bearing 30205E Washer 3 4 Spindle Nut Coupling Pump Side OIO Or 01 O1 AIAI AIAJ AIAI aJ AIAI AJAI AJI RT RR ATIT AI OIOI OJ OIO N O O N OD oO AJIO 0O O WO IN OO Oo AJI oO MI O OO WON oO A N Coupling Engine Side Pump Key 1 8 Engine Key N Hex Screw N Engine Directional Valve Seal Hex Head Bolt 3 8 3 1 2 Wheel Cap Dipstick 20 Hex Head Nut 3 8 21 OFingSeal 24 _ The parts list for the Engine 57 is in the separate Robin Engine Manual PLEASE READ THE FOLLOWING CAREFULLY THE
9. each over or across the Log Splitter Maintain tools with care Keep tools sharp and clean for better and safer performance Follow instructions for lubricating and changing accessories Inspect tool hoses periodi cally and if damaged have them repaired by an authorized technician The handle must be kept clean dry and free from oil and grease at all times Remove adjusting keys and wrenches Check that keys and adjusting wrenches are removed from the tool or machine work surface before plugging it in Never leave the Log Splitter unattended while in operation Stay alert Watch what you are doing use common sense Do not operate any tool when you are tired Never attempt to split two logs on top of each other Check for damaged parts Before using any tool any part that appears damaged should be carefully checked to determine that it will operate properly and perform its intended function Check for alignment and binding of moving parts any broken parts or mounting fixtures and any other condition that may affect proper operation Any part that is damaged should be properly repaired or replaced by a qualified technician Do not use the tool if any switch does not turn On and Off properly Always operate the Log Splitter on a dry flat level surface with the wheels blocked Replacement parts and accessories When servicing use only identical replacement parts Use of any other parts will void the warranty Only use accessories in
10. es or power tools in damp or wet locations Don t expose to rain Keep work area well lighted 3 Keep children away this unit may produce hazardous flying debris Children must never be allowed in the work area Do not let them handle machines or tools 4 Store idle equipment When not in use tools must be stored in a dry location to inhibit rust Always lock up tools and keep out of reach of children 91839 91840 amp 92199 RAV 01 07 SKUs For replacement parts please call 1 800 444 3353 Page 2 10 11 12 13 14 15 16 17 18 19 20 SKUs Use the right tool for the job Do not attempt to force a small tool or attachment to do the work of a larger industrial tool There are certain applications for which this tool was designed It will do the job better and more safely at the rate for which it was intended Do not modify this tool and do not use this tool for a purpose for which it was not in tended Dress properly Do not wear loose clothing or jewelry as they can be caught in moving parts Protective electrically nonconductive clothes and nonskid steel toe footwear are recommended when working Wear restrictive hair covering to contain long hair Use eye protection Always wear ANSI approved impact safety glasses underneath a full face shield Wear an ANSI approved dust mask or respirator when working around wood dust Do not overreach Keep proper footing and balance at all times Do not r
11. he logs are split 91839 91840 SKUs 92199 For replacement parts please call 1 800 444 3353 Page 7 Note Maintenance The engine must be off when performing any maintenance Ifthe unit was recently used make sure that the engine has cooled to avoid burns After every use wipe down the Log Splitter to remove any tree sap or dirt This will extend the life of the unit Always keep the wedge and base clean When storing make sure the Log Splitter is locked in a location where children cannot reach it Read the maintenance section of the engine manual and follow all of the procedures The recommended interval for changing the hydraulic oil and filter is approximately every 3 months BEFORE TRANSPORTING inspect the general condition of the Trailer Check for loose Bolts and Nuts misalignment or binding of moving parts cracked bent or broken parts exces sively worn Safety Chain damaged Tail Lights Side Running Lights Wiring Harness loose Lug Nuts loose Hitch connection and any other condition that may affect its safe operation If abnormal noise or vibration occurs have the problem corrected before further use Do not use damaged equipment BEFORE TRANSPORTING check the Tires for wear and proper inflation 60 PSI BEFORE TRANSPORTING AND AT 500 MILE INTERVALS DURING EVERY TRIP check and tighten the Tire Lug Nuts Torque from 85 to 90 Ft Lbs EVERY 2 000 TO 3 000 MILES OF TRAVEL lubricate the Hub Assemblies w
12. hickness 1 5 8 Capacity Wheel Size 8 Diameter D O T Ram Diameter 1 3 4 Overall Approved a A E Stage Gear Stage Gear Stage Gear Weight 498 Lbs Weight 640 Lbs Weight 492 Lbs This product requires engine oil hydraulic oil and fuel to be added before starting Attempting to start the engine without oil will ruin the engine and void the warranty Before starting the engine refer to the engine owners manual for additional engine maintenance information Note 8 maximum diameter applies to most soft to medium types of woods Maximum diameter of hardwoods may vary depending on density of the wood Note Read and follow the instructions and safety warnings in the manual that accom panies the Robin engine Engine specifications are listed in the engine manual Save This Manual You will need the manual for the safety warnings and precautions assembly instructions operating and maintenance procedures parts list and diagram Keep your invoice with this manual Write the invoice number on the inside of the front cover Keep the manual and invoice in a safe and dry place for future reference Safety Warnings and Precautions WARNING When using tool basic safety precautions should always be followed to re duce the risk of personal injury and damage to equipment Read all instructions before using this tool 1 Keep work area clean Cluttered areas invite injuries 2 Observe work area conditions Do not use machin
13. ith a heavy weight bearing grease Follow the Bearing Packing Instructions as explained on the last page of this manual After each Hub Assembly is reassembled tighten the Castle Nut until the wheel Starts spinning with slight resistance Loosen the Castle Nut about 1 2 turn from this point Insert a new Cotter Pin through the Castle Nut and the hole in the axle Bend the Pin back locking it and the Nut in place Bleeding the Hydraulic System If the Log Splitter begins to lose power or splitting efficiency it may be a result of air becoming trapped in the hydraulic system Follow the steps below to bleed air from the system 1 6 T Loosen the Oil Plug 37 and make sure the o ring is out of the way to expose the air hole in the Oil Plug 37 Remove the spark plug from the engine see engine manual to keep the engine from starting during this process Push the Directional Valve 58 forward toward the front of the Cylinder 1 see FIGURE 1 Pull the engine starter cord 10 15 times until the hydraulic cylinder piston moves forward CAUTION Keep everything away from the splitting edge during this process Tighten the Oil Plug 37 Replace the spark plug Test the Log Splitter to make sure it is operating properly If not repeat the above process Warning Only a qualified technician should repair or service the inter SKUs nal hydraulic system of this unit 91839 91840 3 92199 For replacement parts please
14. ker With the grease filled bearing packer in one hand and the bearing in the other press the bear ing into the grease forcing the grease inside the slots in the bearing continue doing this until every slot in the bearing is completely full of grease Finish assembling the hub wheel assembly as explained in this manual being careful not to get any dirt or debris on any part of the assembly 91839 91840 amp 92199 For replacement parts please call 1 800 444 3353 Page 12
15. let hole by tightening the Oil Plug 37 Make certain that the maximum length of each log does not exceed 25 inches with a diameter of 8 inches 91839 91840 2 92199 For replacement parts please call 1 800 444 3353 07e Page 6 Operation continued 4 Place the log on the Splitter Base as shown in FIGURES 1 and 4 Make sure the wedge on the Slide Assembly 3 is facing the log See FIGURE 1 5 After reading and following all of the setup safety and operation warnings in the Robin Operating Manual turn on the engine See FIGURE 5 Set the engine s throttle all the way to the fast setting represented by the rabbit left in the picture below FIGURE 5 9 HP Engine Shown p Choke a Starter Cord Ff WARNING Stand clear of the splitting area No spectators should be within twenty feet of the log splitting area Wood projectiles can fly in any direction FIGURE 6 6 Grip the Directional Valve 58 and move it into the lower position to move the Slide Assembly 3 toward the log to split it 7 Once the log is split remove the split pieces To back the wedge off the log move the gt Directional Valve 58 away from the log Directional Handle 58 you just split To stop movement of the Log Splitter at any time move the Directional Valve 58 into the midpoint Do not ever go near the splitting area if the Slide Assembly 3 is moving 8 Continue repeating the above steps until all of t
16. s too tight the Handle will not lock Note The hitch will accept 2 inch hitch balls SKUs FIGURE 4 Operation Warning Always block the wheels before changing the position vertical horizontal of the unit In FIGURE 1 the Rail Assembly 2 is shown in Horizon tal mode for operation and travel In FIGURE 4 the unit is shown in the vertical position To change positions re move the Hair Pin Clip 29 and the Push Pin 26 A close up of this Push Pin 26 is shown in FIGURE 3 on page 5 Tilt the unit to the vertical position as shown in FIGURE 4 and replace both the Push Pin 26 and the Hair Pin Clip 29 into the vertical posi Base tion hole See FIGURE 1 Reverse the process to return to the horizontal position Remove the Oil Plug 37 and fill the tank with Hydraulic oil not included To check the oil level remove the Dipstick 62 check the level then replace it The oill should be at the upper notch of the Dipstick Be sure that a constant oil level of 2 5 gallons is main tained See FIGURE 3 on page 5 Parts List page9 and Assembly Diagram page 10 Vertical Position The hydraulic system must be vented during operation or it may become vacuum locked and stop working properly To vent the system open the air inlet hole See FIGURE 3 by loosening the Oil Plug You may have to move the o ring to expose the air inlet vent When the Log Splitter is not in operation or being transported close the air in
17. tended for use with this tool Approved accessories are available from Harbor Freight Tools Do not operate tool if under the influence of alcohol or drugs Read warning labels if taking prescription medicine to determine if your judgment or reflexes are impaired while taking drugs If there is any doubt do not operate the tool Maintenance For your safety service and repairs should be performed regularly by a qualified technician Maintenance should be performed regularly Never place your hands or body near a hydraulic fluid leak Never check for a leak with your hands or other body parts High pressure fluid can be forced under your skin resulting in serious injury Never place hands or feet between the log and splitter wedge or between the log and the ram during the forward or reverse stroke 91839 91840 8 92199 For replacement parts please call 1 800 444 3353 Page 3 This equipment must never be used in any sealed structure Carbon mon oxide is produced during operation and is DEADLY in a closed environment Early signs of carbon Monoxide poisoning resemble the flu with headaches dizziness or nausea If you have these signs the tool may not be working prop erly or is improperly vented get fresh air immediately 22 Never split a log that contains any foreign materials 23 WARNING The brass components in this product contain lead which is a chemical known to the State of California to cause cancer and birth defects
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