PGP020™ Service Manual HY09-SM020/US
Contents
1. 14 Recommended Start up Procedure for New or Rebuilt Pump or Motor 16 Test Procedure Recommended 17 Instructions for Change of Rotation 18 Oiler of Sale ee nenne 22 PGP020 Service Manual PGP020 Series Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US General Instructions Cleanliness Cautions Pump Service Instructions General Instructions These service instructions will e familiarize you with the PGP020 series roller bearing pump its component parts and their relative position e show the proper methods for disassembly and assembly e advise appropriate care and use of this hydraulic pump Following these instructions can prolong the life of your pump and help achieve optimal performance We recommend you read this entire set of instructions before attempting any repair To ensure damage did not occur during shipment check all replacement parts closely before installation Cleanliness Dirt is the enemy of any hydraulic system so keeping equipment clean is a crucial maintenance requirement MAKE SURE YOU DISASSEMBLE AND ASSEMBLE YOUR HYDRAULIC EQUIPMENT IN A CLEAN AREA TO PREVENT PERSONAL INJURY SAFETY GLASSES AND STEEL TOE SHOES SHOULD BE WORN PGP020 Service Manual PGP020 Series Cautions 1 Parker replacement parts are made to origin2. Service Manual HY09 SM020 US Service Manual PGP020 Effective July 1 2006 Supersedes All Others PGPO0O20 Series The Parker Hannifin Gear Pump Division Assures m Consistent quality m Technical innovation m Premier customer service Worldwide Sales and Service Parker operates sales and service centers in major industrial areas worldwide Call 1 800 C PARKER for more information or for a synopsis of the Gear Pump Division contact a Parker representative The Gear Pump Division s ability to engineer specialty products for unique applications has kept us at the forefront of technology and ensured our position as the industry leader Our success has come from providing a Quality product with excellent sales and service support We manufacture hydraulic components for a wide range of industries including e Construction Refuse dump truck Material handling Forestry e Agriculture e Industrial JAN WARNING FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH PERSONAL INJURY AND PROPERTY DAMAGE This document and other information from Parker Hannifin Corporation its subsidiaries and authorized distributors provide product and or system options for further investigation by users having technical expertise It is important that you analyze all aspects of your application and review the information concerning the product or
3. and mobile machinery and equipment pneu matic and electro mechanical components and systems to automation customers worldwide in the design manufacture and distribution of high quality critical flow components for worldwide processinstrumentation ultra high purity medical and analytical applications Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA The Automation Group j The Instrumentation is a leading supplier of n _ goal Group is a global leader Parker Hannifin Corporation Service Manual Gear Pump Division HY09 SM020 US 1775 Logan Avenue 2 5M 07 06 T amp M Youngstown OH 44501 USA Tel 330 746 801 1 Fax 830 746 1148 http www parker com gearpump
4. cutting teeth ground off Machinist hammer Soft faced hammer Permatex Aviation Form A Gasket No 3 Non hardening Sealant or equivalent Medium grit carborundum stone Hydraulic oil and grease Prick punch or machinists ink Sharp razor blade Scale 1 32 or 1 64 graduations Feeler gauges Small flat head screwdriver Large flat headed screwdrivers Torque wrench 13 16 socket 1 2 steel ball Loctite No 262 Vise with a 6 minimum open spread Lip seal installation bar 1 3 4 X 2 Shaft installation sleeve steel Lip seal removal tool Check tool 6 wrench Lip Seal Removal Tool A seal removal tool can be made easily from an old screwdriver Heat the tip and bend as shown Grind off the tip to fit the notch behind the lip seal 1 4 PGP020 Service Manual PGP020 Series Check Tool wien DRILL ROD Make the check tool from a 4 length of 3 8 diameter drill rod and a 3 1 2 length of 3 16 diameter drill rod Shaft Installation Sleeve Steel 3 8 radius 1 4 dia drill thru hole To make the shaft installation sleeve use bar stock that is 1 1 8 or 1 1 4 in diameter by 4 5 8 long All external surfaces must be free of scratches and burrs 4 1 2 Id 1 002 000 1 065 soe 015 X 45 chamfer 13 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Ser
5. to the threaded check holes in the shaft end casting Install the checks in the shaft end cover using the check tool see Tool List on Page 11 The checks must bottom out in the casting If the ring seals were removed from the shaft end cover or the port end cover they should be replaced at this time Place the ring seals in the bottom of the drive gear bearing bores Be sure that the flat side of the ring seal is against the mating surface in the casting Ring seals are placed behind the drive gear bearings only 9 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Assembly Instructions PGP020 Service Manual PGP020 Series PGP020 Assembly Instructions STEP 9 STEP 7 Install the bearings in the shaft end cover and the port end cover Use an arbor press to press the bearings into the bottom of the bearing 1 bores Check to make sure the ring seals move freely under the drive gear bearings With the pocket seals facing down place thrust plate over the bearings Tap the thrust plate with a soft faced hammer around the edge until the thrust plate is about 1 32 from the casting surface Do not tap the center of the plate Cut four pocket seals 1 4 long from the seal strip Push a pocket seal into each of the remaining slots in the thrust plate until it touches the bearing wall Use a razor blade to trim the expos
6. drive shaft facing you and the idler gear down If the pump has unequal porting and the larger port is on the left side then the pump is set up for CW operation If the larger port is on the right side of the pump then it is set up for CCW operation Bi rotational pumps that can be run in either direction will have equal size ports DISASSEMBLY 1 If the unit has a keyed shaft remove the key 2 Clamp the unit in a vise on the outside diameter of the mounting flange with the drive shaft down 3 Remove the cap screws on single units or hex nuts and studs on multiple units 4 Remove the port rear end cover 5 Remove the gear housing and the gear set Keep the gears together because they are a matched set For multiple units Remove the bearing carrier and the next gear housing and gear set until all that remains is the shaft end cover Note Care should be taken to avoid losing the small rubber pocket seals fitted in the thrust plate pocket seal grooves 6 Lift the thrust plate off of the shaft end cover Do not lose the pocket seals 7 Remove the check plug in the shaft end cover with a screwdriver and then install it in the opposite drain hole Screw in tightly and stake the check plug with a punch at both edges of the screwdriver slot For a single rotation pump the check plug is always located on the high pressure outlet side of the pump If the shaft end cover has two check plugs the pump is already set up for d
7. gear housing over gear set Make sure the gear housing rests tightly against shaft end cover Be careful not to pinch the section seal Squirt clean hydraulic oil over the gear shaft and the idler gear to provide initial lubrication when the pump is started Thread the four cap screws with the washers into the shaft end cover and tighten them in a cross corner pattern Rotate the gear shaft of the pump with a 6 wrench to make certain there is no binding in the pump Insert the pocket seals into the thrust plate and install onto the port end cover following the previous instructions in steps 8 amp 9 Then place port end cover over the gear journals The orientation mark on port end cover must line up with the mark on the gear housing Also be sure bearing bore holding the ring seal goes over the drive gear journal Apply pressure to the casting with your hand or tap lightly with a soft faced hammer until the port end cover rests tightly against the gear housing After the cap screws are tightened make certain there is no internal binding of the gear set by rotating the gear shaft then tighten the cap screws in a cross corner pattern to a final torque of 2400 in Ibs 200 ft Ibs 11 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual Part Replacement Guide PGPO20 Series Part Replacement Guide If the gear set c
8. system in the current product catalog Due to the variety of operating conditions and applications for these products or systems the user through its own analysis and testing is solely responsible for making the final selection of the products and systems and assuring that all performance safety and warning requirements of the application are met The products described herein including without limitation product features specifications designs availability and pricing are subject to change by Parker Hannifin Corporation and its subsidiaries at any time without notice Offer of Sale The items described in this document are hereby offered for sale by Parker Hannifin Corporation its subsidiaries or its authorized distributors This offer and its acceptance are governed by the provisions stated in the Offer of Sale Copyright 2006 Parker Hannifin Corporation All Rights Reserved Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US Contents Index General Instructions ccc ceecceeeeeeeeeeeeneeeeeeeeeeeees 4 Cleanliness wesen ante energie 4 CAUIONS ven een 4 Exploded View and Parts List cccceseseeeseeeees 5 PGP020 Disassembly Instructions 6 PGP020 Assembly Instructions 9 Part Replacement Guide cccccccceceseeeeeeeeeees 12 TOO ENS esse ee 13 Lubrication and Oil Recommendations
9. the inlet line must provide an inlet flow velocity that is not in excess of 8 feet per second Hot oil drawn into a cold pump could cause it to seize Switching the pump on and off in short bursts could help prevent seizure Operate the pump at least two minutes at zero pressure and at moderate speed not over 1500 rpm If pump becomes hot to touch it is binding and could seize This rarely occurs but if it does the pump will PGP020 Service Manual PGP020 Series have to be disassembled and be rebuilt taking extra care to remove burrs and to assure freedom from binding Gradually increase the pressure on a pump until the desired test pressure has been reached This should take about five minutes Delivery should run close to the rated catalog performance figures which are averaged from the testing of several pumps A 5 lower reading may be used as a rated minimum if new or relatively new parts have been used When rebuilding the pump reuse only those parts which appear to be in satisfactory condition A 10 or 15 lower reading is permitted for the rebuilt pump depending upon the performance expected from the equipment Your individual experience is the best guide Many repairmen measure the output at the normal operating speed at zero pressure then at 1000 psi or the operating pressure of the equipment and allowa volume decrease approximating the listing below The table listing shows the drop off in flow that c
10. to a carrier Any delivery dates shown are approximate only and Seller shall have no liability for any delays in delivery 4 Warranty Seller warrants that the item sold hereunder shall be free from defects in material or workmanship for a period of 547 days from the date of shipment to Buyer or 3 000 hours of use whichever expires first THIS WARRANTY COMPRISES THE SOLE AND ENTIRE WARRANTY PERTAINING TO ITEMS PROVIDED HEREUNDER SELLER MAKES NO OTHER WARRANTY GUARANTEE OR REPRESENTATION OF ANY KIND WHATSOEVER ALL OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO MERCHANTABILITY AND FITNESS FOR PURPOSE WHETHER EXPRESS IMPLIED OR ARISING BY OPERATION OF LAW TRADE USAGE OR COURSE OF DEALING ARE HEREBY DISCLAIMED NOTWITHSTANDING THE FOREGOING THERE ARE NO WARRANTIES WHATSOEVER ON ITEMS BUILT OR ACQUIRED WHOLLY OR PAR TIALLY TO BUYERS DESIGNS OR SPECIFICATIONS 5 Limitation of Remedy SELLER S LIABILITY ARISING FROM OR IN ANY WAY CONNECTED WITH THE ITEMS SOLD OR THIS CONTRACT SHALL BE LIMITED EXCLUSIVELY TO REPAIR OR REPLACEMENT OF THE ITEMS SOLD OR REFUND OF THE PURCHASE PRICE PAID BY BUYER AT SELLER S SOLE OPTION IN NO EVENT SHALL SELLER BE LIABLE FOR ANY INCIDENTAL OR SEQUENTIAL OR SPECIAL DAMAGES OF ANY KIND OR NATURE WHATSOEVER INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING FROM OR IN ANY WAY CONNECTED WITH THIS AGREEMENT OR ITEM SOLD HEREUNDER WHETHER ALLEGED TO ARISE FROM BREACH OF CONTRACT EXPRESS OR IMPLIED WARRAN
11. 0 and install over the gear set and gear housing Gear Housing Note If the bearing carrier has an L shaped porting configuration it cannot be used A new bearing carrier will have to be machined with the proper configuration 8 Insert the gears into the bearing carrier 9 Rotate the gear housing 180 and carefully slide over the gear set Make sure both section seals stay in the seal grooves during assembly 10 Place the port end cover with the thrust plate over the gear set If the port end cover is ported it must be inverted 11 Insert the cap screws or the studs into the unit and torque in a cross corner pattern to 2400 in lbs 200 ft Ibs 19 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Notes 20 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Notes 21 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Offer of Sale The items described in this document are hereby offered for sale at prices to be established by Parker Hannifin Corporation its subsidiaries and its authorized distributors This offer and its acceptance by any customer Buyer shall be governed by all of the following Terms and Conditions Buyer s order for any item described in its document when communicated to Parker Hannifin Corporation its subsidiary or an authorized distributor Seller verbally or in writing shall constitute acceptance
12. Roller Bearings per gear section 391 0381 906 10 Thrust plates motor 2 391 2185 913 per gear section Pocket Seals per gear section 391 2882 022 Viton 391 2882 051 Buna Gasket Seals per gear section Bearing Carin weroxwx Connecting Shaft J 312 1133 001 00 set Cap Screws single units Studs multiple units Nuts multiple unit PpoOy ay apap ll Plug 7 in position B for clockwise rotation Plug 7 in position A for counter clockwise rotation Check valves in both positions for bi directional units 5 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual PGP020 Disassembly Instructions PGP020 Series PGP020 Disassembly Instructions STEP 3 STEP 4 2 STEP 1 STEP 2 Place the pump ina 4 vise with the drive shaft pointing down Clamp unit on the sides of the mounting flange Do not clamp on the pilot diameter as it may damage the sealing surface Loosen and remove the four cap screws and washers with a 13 16 socket and wrench 4 2 Place two large flat bladed screwdrivers into the separation notches and pry up the port end cover until loose BE CAREFUL not to nick mar or scratch the machined casting faces STEP 4 3 Mark each casting in the assembly with machinist ink or a prick punch to orient the castings so that the unit can be reassembled later i
13. TY OR IN TORT INCLUDING WITHOUT LIMITATION NEGLIGENCE FAILURE TO WARN OR STRICT LIABILITY 6 Changes Reschedules and Cancellations Buyer may request to modify the designs or specifications for the items sold hereunder as well as the quantities and delivery dates thereof or may request to cancel all or part of this order however no such requested modification or cancellation shall become part of the contract between Buyer and Seller unless accepted by Seller in a written amendment to this Agreement Acceptance of any such requested modification or cancellation shall be at Seller s discretion and shall be upon such terms and conditions as Seller may require 7 Special Tooling A tooling charge may be imposed for any special tooling including without limitation dies fixtures molds and patterns acquired to manufacture items sold pursuant to this contract Such special tooling shall be and remain Sellers property notwithstanding payment of any charges by Buyer In no event will Buyer acquire any interest in apparatus belonging to Seller which is utilized in the manufacture of the items sold hereunder even if such apparatus has been specially converted or adapted for such manufac ture and notwithstanding any charges paid by Buyer Unless otherwise agreed Seller shall have the right to alter discard or otherwise dispose of any special tooling or other property in its sole discretion at any time 8 Buyer s Property Any designs too
14. al equipment standards For assured quality of material and workmanship and for compatibility in assembly USE ONLY GENUINE Parker REPLACEMENT PARTS If it becomes necessary to pry apart castings use extreme caution not to mar or damage the machined surfaces Excessive force while prying can result in misalignment and seriously damage parts If component assembly is difficult do not force items and never employ an iron hammer For a complete list of recommended tools see Page 11 Gears are closely matched therefore they must be kept together as a set when removed from the unit Handle with care to avoid damage to the journals faces and teeth Never hammer roller bearings into bores Use only an arbor press or other suitable tool It is important to airblast all parts and wipe them with a clean lint free cloth before assembly Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual Exploded View and Parts List PGPO20 Series Exploded View and Parts List Item No Description Required Ten Digit No TDN 2 Outboard Bearing 1 ooroo O o p e sacs Lip Seal pump 1 391 2883 058 _ Z Seal Retainer motor a S sorssetoso O Lip Seal moton I E Shaft End Cover BB Drain Plug motor 1 391 2282 XXX O Check Assemblies for Motors 391 3681 001 amp Bi Rotational Pumps Plugs pumps only 391 2286 004 Ring Seals per gear section 391 2585 006
15. an be expected at various operating pressures for a pump rebuilt with used parts PGP020 pumps are generally tested to 2000 psi GPM Delivery at 1800rpm GPM Drop Off At 100psi 1000 psi 70 bar 1500 psi 105 bar 2000 psi 140 bar 2500 psi 175 bar 15 25 21 2 to 31 2 31 2 to 5 4 51 2 At test speeds other than 1800 rom gpm delivery will vary almost proportionately but the same drop off figures should be used Since it is rarely feasible to test motors on dynamometers the practical procedure is to test them as pumps running complete testing procedures in l aor ne each direction Be sure to run the pump in the direction for which it was designed and built Driving the pump in the wrong direction will build up pressure behind the lip seal causing damage to the pump and necessitating its replacement After completing the testing procedures the pump is ready for installation and immediate duty operation on equipment It must be reinforced that to prevent seizure hot oil must not be drawn into a cold pump Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Parker i Service Manual HY09 SM020 US PGP020 Service Manual Instructions for Change of Rotation PGPO20 Series Instructions for Change of Rotation The PGP020 series pump can be assembled for clockwise CW counterclockwise CCW or bi rotational operation The direction of rotation is determined by looking at the pump with the
16. but are not recommended as they are not sufficiently refined products e Fire Resistant Fluids Of the several different types only the inverted emulsion types may be used without switching to a special seal packing gasket hose etc compositions Their use may substantially reduce pump life Experience indicates that the use of fire resistant fluids can be disastrous unless certain precautions are followed DO NOT USE ANY FIRE RESISTANT FLUIDS OR NON PETROLEUM OILS WITHOUT CONSULTING OUR PRODUCT SUPPORT DEPARTMENT e These suggestions are intended as a guide only OBTAIN YOUR FINAL OIL RECOMMENDATIONS FROM YOUR OIL SUPPLIER 15 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual Reccomended Start up Procedure PGP020 Series Recommended Start up Procedure for New or Rebuilt Pump or Motor Before installing a new or a rebuilt pump or motor back out the main relief valve until the spring tension on the adjusting screw is relaxed This will avoid the possibility of immediate damage to the replacement unit in the event that the relief valve setting had been increased beyond the recommended operating pressure prior to removing the old unit Before connecting any lines to the pump or to the motor fill all ports with clean oil to provide initial lubrication This is particularly important when the unit is located above the oil reservoir After connecting the lines and
17. ed portion of the pocket seals The pocket seals should be flush with the outside diameter of the plate 1 Grip the shaft end cover in a vise with the mounting face down Cut two pocket seals 7 32 long from the pocket seal strip Grease the seals well and insert them into the center slots on the reverse side of the thrust plate Insert the external drive end of the gear shaft into the shaft installation sleeve see Tool List on Page 11 Lightly grease the gear shaft and sleeve Insert the gear shaft with the shaft installation sleeve into the shaft end cover using a twisting motion Be careful not to damage the lip seal Push down carefully until the gear rests against the thrust plate face Remove the shaft installation sleeve Insert the idler gear into its bearing bore matching the orientation marks on the teeth of the gear set as previously marked see Step 7 on Page 5 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual PGP020 Assembly Instructions PGP020 Series PGP020 Assembly Instructions STEP 12 STEP 13 Apply a light coating of grease to the new 4 section seals and place them into the machined grooves on both sides 4 of the gear housing H Check the section seals for proper fit Locate the orientation mark on the gear housing and line it up with the mark on the shaft end cover Slide the
18. f any item sold hereunder The foregoing provisions of this Part 10 shall constitute Sellers sole and exclusive liability and Buyer s sole and exclusive remedy for infringement of Intellectual Property Rights If a claim is based on information provided by Buyer or if the design for an item delivered hereunder is specified in whole or in part by Buyer Buyer shall defend and indemnify Seller for all costs expenses or judgments resulting from any claim that such item infringes any patent trademark copyright trade dress trade secret or any similar right 11 Force Majeure Seller does not assume the risk of and shall not be liable for delay or failure to perform any of Seller s obligations by reason of circumstances beyond the reasonable control of Seller hereinafter Events of Force Majeure Events of Force Majeure shall include without limitation accidents acts of God strikes or labor disputes acts laws rules or regulations of any government or government agency fires floods delays or failures in delivery of carriers or suppliers shortages of materials and any other cause beyond Seller s control 12 Entire Agreement Governing Law The terms and conditions set forth herein together with any amendments modifications and any different terms or conditions expressly accepted by Seller in writing shall constitute the entire Agreement concerning the items sold and there are no oral or other representations or agreements which
19. ls patterns materials drawings confidential information or equipment furnished by Buyer or any other items which become Buyer s property may be considered obsolete and may be destroyed by Seller after two 2 consecutive years have elapsed without Buyer placing an order for the items which are manufactured using such property Seller shall not be responsible for any loss or damage to such property while it is in Sellers possession or control 9 Taxes Unless otherwise indicated on the face hereof all prices and charges are exclusive of excise sales use property occupational or like taxes which may be imposed by any taxing authority upon the manufacture sale or delivery of the items sold hereunder If any such taxes must be paid by Seller or if Seller is liable for the collection of such tax the amount thereof shall be in addition to the amounts for the items sold Buyer agrees to pay all such taxes or to reimburse Seller therefore upon receipt of its invoice If Buyer claims exemption from any sales use or other tax imposed by any taxing authority Buyer shall save Seller harmless from and against any such tax together with any interest or penalties thereon which may be assessed if the items are held to be taxable 10 Indemnity For Infringement of Intellectual Property Rights Seller shall have no liability for infringement of any patents trademarks copyrights trade dress trade secrets or similar rights except as provided in this Pa
20. lure of the product Product should be thoroughly tested to ensure proper operation before the unit is put back into service 8 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Assembly Instructions PGP020 Service Manual PGP020 Series PGP020 Assembly Instructions STEP 1 Stone all machined casting surfaces with a medium grit carborundum stone If the bearings were removed deburr the bearing bore using a deburring tool Rinse all parts in a solvent fluid Air blast all parts and wipe them with a clean lint free cloth before starting the assembly Place the shaft end cover on an arbor press with the pilot facing up Place lip seal with the shoulder of the seal up at the top of the seal bore Press the lip seal into the shaft end cover with a lip seal installation bar see Tool List on Page 11 The seal should be pressed in so it is flush with the recessed face in the shaft end cover casting Peen over the check holes in the shaft end 4 cover with a 112 steel balland ahammer This will insure the checks do not back out of the check holes during operation STEP 4 Coat the outside diameter of the lip seal with Permatex Aviation Form A Gasket No 3 Non Hardening Sealant or equivalent Be careful not to get Permatex on the inner lip of the seal as it will cause a lip seal leak Apply Loctite No 262
21. ming to the characteristics listed above is essential to the satisfactory performance and long life of any hydraulic system Oil should be changed on a regular schedule in accordance with the equipment manufacturer s recommendations and the system should be periodically flushed Oil temperature in reservoir must not exceed 200 F 93 3 C with a maximum temperature of 180 F 82 2 C recommended Higher temperatures will result in rapid oil deterioration Reservoir capacity should equal in gallons the pump output in gpm or the total gom of all pumps where there is more than one in the system Normal Temperatures 0 F 18 C to 100 F 37 8 C Ambient 100 F 37 8 C to 180 F 82 2 C System Be sure your oil is suitable for the temperatures you expect to encounter Cold Weather Operation Oils for use in cold weather should have a viscosity that does not exceed 7500 SSU at the minimum start up temperature A pour point of at least 20 F below start up temperature is recommended Start up procedures should allow for a gradual warm up until the oil reaches a reasonably fluid state 14 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual Lubrication Oil Recommendations PGP020 Series Lubrication and Oil Recommendations The Use of Other Oils e Diesel Fuel or Kerosene Coal Oil These are sometimes used as dilutants for cold weather operations
22. mounting the replacement unit operate the pump or the motor for at least two minutes at zero pressure at the lowest possible rom During this break in period the unit should run free and not develop an excessive amount of heat If the unit operates properly the speed and the pressure can then be increased to the normal operating settings Reset the main relief valve to its proper setting while the pump is running at the maximum operating engine motor speed for the vehicle ALWAYS USE AN ACCURATE GAGE WHEN ADJUSTING THE RELIEF VALVE PRESSURE SETTING 16 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US Test Procedure Recommended Test Procedure Recommended Be sure there is an adequate supply of oil for the pump at least one gallon of oil for each gom of pump capacity If one section of a tandem pump is being tested make sure all other sections which are not being tested are adequately supplied with oil If any of the other sections run dry or if plugs are left in ports serious and permanent damage will result The oil should be a good quality hydraulic oil rated at 150 SSU at 100 F with the oil temperature held at 120 F plus or minus 5 F Test procedures are described in detail in SAE handbooks see Hydraulic Power Pump Test Procedure SAE J745c The inlet line must be an adequate size with no more than 5 mercury vacuum adjacent to the pump inlet As a rule
23. n the proper position Remove the port end cover subassembly using steps 4 1 4 3 4 1 Place the point of a large screwdriver or a chisel on the parting line between the port end cover casting and the gear housing casting Gently tap until a slight separation 1 between the castings is detected 4 3 Lift off the port end cover subassembly 6 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual PGP020 Disassembly Instructions PGP020 Series PGP020 Disassembly Instructions STEP 5 1 STEP 5 2 Remove the gear housing subassembly 5 2 Lift off the gear housing subassembly STEP 5 3 using steps 5 1 5 3 5 1 Place the two large flat bladed screwdrivers into the separation notches and pry up the gear housing until loose BE CAREFUL not to nick mar or scratch the machined casting faces 5 3 Remove the thrust plate from the housing It may be necessary to gently tap the thrust plate with the handle of a hammer or screwdriver Be careful A not to bend or score the thrust plate Remove and discard the six small rubber pocket seals from the thrust 1 plate 7 Wipe the gear face 4 surface dry with a clean lint free cloth Mark the teeth of the drive and driven gears the gear set at their mesh point with machinist ink or quick dry marker This is to index the gear set for proper
24. nearby distributor or repair services field with over 7 500 distributors serving more than will receive prompt attention by calling the Parker 350 000 customers worldwide Product Information Center at our toll free number 1 800 C PARKER 1 800 272 7537 In the UK a similar service is available by calling 0500 103 203 The Aerospace Group The Climate amp Industrial i JOR Controls Group s a leader in the development oats design manufacture and 7 ie servicing of control systems and components for aerospace and related high technology markets while achieving growth through premier customer service 4 designs manufactures and ji markets system control and fluid handling components and systems to refrigeration air conditioning and industrial customers worldwide and markets rigid and flexible industrial and commercial connectors and associated sealing devices and related products used in pneumatic products by providing and fluid systems superior quality and total customer satisfaction The Fluid Connectors The Seal Group designs Group designs manufactures i a FZS manufactures and distributes The Filtration Group designs manufactures and markets quality filtration and clarification products providing customers with the best value quality technical support and global availability markets a full spectrum of hydraulic compnents and systems to builders and users of industrial
25. of this offer 1 Terms and Conditions of Sale All descriptions quotations proposals offers acknowledgments acceptances and sales of Sellers products are subject to and shall be governed exclusively by the terms and conditions stated herein Buyer s acceptance of any offer to sell is limited to these terms and conditions Any terms or conditions in addition to or inconsistent with those stated herein proposed by Buyer in any acceptance of an offer by Seller are hereby objected to No such additional different or inconsistent terms and conditions shall become part of the contract between Buyer and Seller unless expressly accepted in writing by Seller Sellers acceptance of any offer to purchase by Buyer is expressly conditional upon Buyer s assent to all the terms and conditions stated herein including any terms in addition to or inconsistent with those contained in Buyer s offer Acceptance of Seller s products shall in all events constitute such assent 2 Payment Payment shall be made by Buyer net 30 days from the date of delivery of the items purchased hereunder Any claims by Buyer for omissions or shortages in a shipment shall be waived unless Seller receives notice thereof within 30 days after Buyer s receipt of the shipment 3 Delivery Unless otherwise provided on the face hereof delivery shall be made F O B Sellers plant Regardless of the method of delivery however risk of loss shall pass to Buyer upon Seller s delivery
26. ontains any of the following defects it should be replaced e Wear on the hubs or in the seal areas detectable by touch or in excess of 002 e Score marks grooves or burrs on the outside diameter of the teeth e Nicks grooves or fretting of the teeth surfaces e Wear or damage to the drive spline key or keyway Wear in excess of 005 cut out necessitates replacement of the gear housing Place a straight edge across the bore If you can slip a 005 feeler gage in the cut out area replace the gear housing Where the cut out is moderate 005 or less the gear housing is still in good condition If the housing has equal size ports or no ports the housing may be rotated 180 exchanging ports and reused If the gears are replaced then the bearings must be replaced also Bearings should fit into the bores with a light press fit Any scratches grooves erosion or pitting on the thrust plate face which is the area that comes in contact with the gear faces requires the replacement of the thrust plates Replace all rubber and polymer seals whenever reassembling the pump This includes lip seal pocket seal strips and section seals 12 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US Tool List Tool List Arbor press Permanent marker or an awl Bearing puller Owatonna Tool Co MD 956 or equivalent Clean lint free cloths Deburring tool a file with the
27. orientation during reassembly Remove and discard the rubber section seals from the top and bottom gear housing faces Remove the idler gear ay and the gear shaft Keep them together as they are a matched set Handle with care to avoid damage to the journals faces and teeth 7 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGP020 Service Manual PGP020 Disassembly Instructions PGP020 Series PGP020 Disassembly Instructions STEP 9 STEP 10 Gently lift off the thrust plate Be careful not to bend or score the plate and mating surface of the casting Remove and discard the six I Remove lip seal Place a 2 lip seal removal tool see Tool List P11 ora screwdriver tip against the inside of the lip seal and tap the screwdriver handle with a hammer Be careful not to damage the roller bearing or the ring seal with screwdriver tip Note If bearings are to be removed from the casting then step can be performed after Step 12 Remove the bronze ring seal from the gear shaft bearing bore in the shaft end cover and the port end cover castings 1 Use a bearing puller to remove the roller bearings Note This step is optional depending on the condition of the bearings Remove the checks from the shaft end te CAUTION Failure to follow a a the recommended assembly instructions can result in poor performance or fai
28. ouble rotation 18 Outlet EN m Inlet Check Plug an u Inlet Outlet Inlet Outlet Check Plug Check Plug Bi rotational Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Service Manual HY09 SM020 US PGPO20 Service Manual Instructions for Change of Rotation PGP020 Series ASSEMBLY 1 Before assembling the unit stone off the machined surfaces This will remove any nicks or burrs that may have resulted from the disassembly 2 Air blast all parts and wipe them with a clean lint free cloth before starting the assembly Note PGP020 series thrust plates are designed for bi rotational operation and do not have to be rotated 3 Place one thrust plate with pocket seals over the shaft end cover bearings Be sure the pocket seals are properly fitted in the thrust plate pocket seal grooves 4 Insert the gear shaft with the shaft installation sleeve into the shaft end cover with a twisting motion Insert the idler gear 5 Rotate the gear housing 180 and carefully slide over the gear set Make sure both section seals stay in the seal grooves during assembly Keep the drive gear and idler gear in the same gear bore as previously marked 6 For multiple units Place the thrust plates with pocket seals over the bearings on both sides of the bearing carrier Be sure the pocket seals are properly fitted in the thrust plate pocket seal grooves 7 Rotate the bearing carrier 18
29. pertain thereto This Agreement shall be governed in all respects by the law of the State of Ohio No actions arising out of the sale of the items sold hereunder or this Agreement may be brought by either party more than two 2 years after the cause of action accrues 22 Parker Hannifin Corporation Gear Pump Division Youngstown Ohio USA Parker Hannifin Corporation 6035 Parkland Blvd ts Cleveland Ohio 44124 4141 Parker Hannifin Corporation Telephone 216 896 3000 Fax 216 896 4000 Web site www parker com About Parker Hannifin Corporation Parker s Charter Parker Hannifin is a leading global motion control To be a leading worldwide manufacturer of components company dedicated to delivering premier customer and systems for the builders and users of durable service A Fortune 500 corporation listed on the goods More specifically we will design market and New York Stock Exchange PH our components manufacture products controlling motion flow and and systems comprise over 1 400 product lines that pressure We will achieve profitable growth through control motion in some 1 000 industrial and aerospace premier customer service markets Parker is the only manufacturer to offer its customers a choice of hydraulic pneumatic and Product Information electromechanical motion control solutions Our North American customers seeking product information Company has the largest distribution network in its the location of a
30. rt 10 Seller will defend and indemnify Buyer against allegations of infringement of U S patents U S trademarks copyrights trade dress and trade secrets hereinafter Intellectual Property Rights Seller will defend at its expense and will pay the cost of any settlement or damages awarded in an action brought against Buyer based on an allegation that an item sold pursuant to this contract infringes the Intellectual Property Rights of a third party Seller s obligation to defend and indemnify Buyer is contingent on Buyer notifying Seller within ten 10 days after Buyer becomes aware of such allegations of infringement and Seller having sole control over the defense of any allegations or actions including all negotiations for settlement or compromise If an item sold hereunder is subject to a claim that it infringes the Intellectual Property Rights of a third party Seller may at its sole expense and option procure for Buyer the right to continue using said item replace or modify said time so as to make it noninfringing or offer to accept return of said item and return the purchase price less a reasonable allowance for depreciation Notwithstanding the foregoing Seller shall have no liability for claims of infringement based on information provided by Buyer or directed to items delivered hereunder for which the designs are specified in whole or part by Buyer or infringements resulting from the modification combination or use in a system o
31. vice Manual Lubrication Oil Recommendations PGP020 Series Lubrication and Oil Recommendations All parts with the exception of the outboard bearing are lubricated by the hydraulic oil in the circuit Particular attention must be paid to keep the oil in the system clean Whenever there is a pump or motor failure and there is reason to suspect that metal particles may be in the system the oil must be drained the entire system flushed clean and any filter screens thoroughly cleaned or replaced New oil should be supplied for the entire system Oil Suitable and recommended for use in circuits involving Commercial Hydraulics pumps and motors should meet the following specifications Viscosity 50 SSU minimum operating temperature 7500 SSU maximum starting temperature e 150 to 225 SSU 100 F 37 8 C generally 44 to 48 SSU 210 F 98 9 C generally Approximate SSU at Oil Grade 100 F 37 8 C 210 F 98 9 C s o g saa soo 5 Viscosity Index 90 minimum Aniline Point 175 minimum Recommended Additives Foam Depressant Rust and Oxidation Inhibitors Other Desirable Characteristics Stability of physical and chemical characteristics e High demulsibility low emulsibility for separation of water air and contaminants e Resistant to the formation of gums sludges acids tars and varnishes e High lubricity and film strength General Recommendations A good quality hydraulic oil confor
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