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Parker Hannifin Corporation  

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Pump & Motor Division  

|

  Kings Mountain, NC

Parker Hannifin Corporation  

|

  

Pump & Motor Division  

|

  Kings Mountain, NC

WARNING: 

This product can expose you to chemicals including lead or DEHP which are known to the state of California to cause cancer,  

birth defects, and other reproductive harm. www.p65warnings.ca.gov

WARNING: 

This product can expose you to chemicals including lead or DEHP which are known to the state of California to cause cancer,  

birth defects, and other reproductive harm. www.p65warnings.ca.gov

Catalog HY13-PMD500-SM/US

PGP/PGM 500 Series

Gear Pumps & Motors Service Manual

Use Genuine Parker Replacement Parts

These service instructions will familiarize you with Parker's single and multiple pumps, their component parts, the relative  
position of each part proper methods for assembly or disassembly of the units.

T

o facilitate the repair of these units, and before any work is done, we suggest that you first read all of the steps used in 

disassembly and assembly.

Dirt is the enemy of any hydraulic system. The first requirement of good maintenance of hydraulic equipment is cleanliness. 
MAKE SURE YOU DISASSEMBLE AND ASSEMBLE YOUR HYDRAULIC EQUIPMENT IN A CLEAN AREA.

The pictures show Model PGP511. Notes in the text cover variations between this unit and the other models.

It is important to airblast all parts and wipe them with a clean, lintless cloth before assembly.

USE CAUTION IN GRIPPING ALL PARTS IN THE VISE TO AVOID DAMAGING MACHINED SURFACES

A pump must be driven in the direction of rotation for which it was built; otherwise, the pressure will blow the shaft seal. 
Check the exploded view and notes at right for proper direction of rotation.

Parker’s Replacement Parts

Parker’s replacement parts are of original equipment standards. For assured quality of material and work manship, and for 
compatibility in assembly, USE ONLY GENUINE PARTS.

Check all replacement parts before installing them to be certain that they were not damaged in shipment.

General Information

Summary of Contents for PGP 500 Series

Page 1: ...Pump Motor Division Vocational Truck Pump Program Catalog Pump Motor Division PGP PGM 500 Series Service Manual...

Page 2: ...rmation concerning the product or 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...

Page 3: ...defects and other reproductive harm www p65warnings ca gov Table of Contents General Information 1 4 Single Pump 1 Use Genuine Parker Replacement Parts 2 Tool List 3 Seal Installation Tools 4 Exploded...

Page 4: ...ductive harm www p65warnings ca gov Catalog HY13 PMD500 SM US PGP PGM 500 Series Gear Pumps Motors Service Manual Single Pump Aluminum Gear Housing Pressure Balanced Bushing Block Cast Iron Port End C...

Page 5: ...stem The first requirement of good maintenance of hydraulic equipment is cleanliness MAKE SURE YOU DISASSEMBLE AND ASSEMBLE YOUR HYDRAULIC EQUIPMENT IN A CLEAN AREA The pictures show Model PGP511 Note...

Page 6: ...nist s hammer Torque wrench Soft hammer Vise with 6 minimum opening Medium grit carborundurn stone Bar for lip seal installation Seal removal tool See A Special mylar sleeve See B Oil and Grease Speci...

Page 7: ...A1 A2 Integral Shaft 0 946 3 500 0 630 0 275 0 748 0 040 30 0 060 PGP PGM 505 L5 Continental Shaft 1 024 3 500 0 630 0 275 0 748 0 040 30 0 060 Pump Motor SEC Description A B C D E F PGP PGM 511 H2 I...

Page 8: ...ou to chemicals including lead or DEHP which are known to the state of California to cause cancer birth defects and other reproductive harm www p65warnings ca gov PGP PGM 500 Series Gear Pumps Motors...

Page 9: ...ncer birth defects and other reproductive harm www p65warnings ca gov PGP PGM 500 Series Gear Pumps Motors Service Manual Catalog HY13 PMD500 SM US Bill of Materials ITEM DESCRIPTION QTY 1 Lip Seal 1...

Page 10: ...SASSEMBLY Start Disassembly CAUTION 1 If prying off sections becomes necessary take extreme care not to mar or damage machined surfaces Excessive force while prying can result in misalignment and seri...

Page 11: ...PMD500 SM US PGP PGM 500 Series Gear Pumps Motors Service Manual 4 Remove gear housing Fig 4 If prying with screwdriver is necessry be careful not to damage the machined surfaces Example of excessive...

Page 12: ...void tapping the gear teeth together or against other hardened surfaces 6 Before removing gears draw a match mark in center of the gear teeth Fig 8 Doing so will help make sure they are placed back in...

Page 13: ...l Disassembly Instructions 10 If equipped remove the snap ring Fig 12 Snap ring is located in front of the shaft seal Figure 12 11 Pry out the lip seal Fig 13 Be careful not to damage seal bore in pum...

Page 14: ...t clean all machined surfaces and make sure are free of debris 2 Prep new lip seal for replacement Fig 1 3 Grease new lip seal Fig 2 Coat the outer edge of the lip seal and its recess with non hardeni...

Page 15: ...ia to cause cancer birth defects and other reproductive harm www p65warnings ca gov Catalog HY13 PMD500 SM US PGP PGM 500 Series Gear Pumps Motors Service Manual Assembly Instructions 5 Replace bearin...

Page 16: ...US PGP PGM 500 Series Gear Pumps Motors Service Manual Assembly Instructions Figure 9 Figure 10 Figure 11 9 Re affix or replace section seal Fig 11 Verify both sides of the section seal are free of de...

Page 17: ...of California to cause cancer birth defects and other reproductive harm www p65warnings ca gov Catalog HY13 PMD500 SM US PGP PGM 500 Series Gear Pumps Motors Service Manual Assembly Instructions Figu...

Page 18: ...s so the seal groove faces up ii Place the soft black into the seal groove with the flat side down iii Place the hard nylon back up seal flat side up into the groove on top of the rubber seal Pump Thr...

Page 19: ...ig 20 Orientation is rotation sensitive for pumps and the seals should be pointed down and facing the high pressure side of the pump the pressure port Push down until thrust block is flush with the sh...

Page 20: ...GP502 PGM502 15 PGP505 PGM505 22 5 PGP511 PGM511 36 PGP517 PGM517 83 Figure 27 15 Install top thrust block Fig 24 Use grease to hold into groove Then place rear thrust block over top of gears It is im...

Page 21: ...or tampering When the cut out is moderate 005 or less the gear housing is in good condition and may be reused Gears Any scoring on gear hubs necessitates replacement Scoring grooving or burring of th...

Page 22: ...nd other reproductive harm www p65warnings ca gov Catalog HY13 PMD500 SM US PGP PGM 500 Series Gear Pumps Motors Service Manual Guidelines for Acceptable Wear Seals and Gaskets Replace all rubber and...

Page 23: ...temperatures it is recommended to keep the temperature of the hydraulic fluid in the range of 120 F to 140 F 49 C to 60 C Fluids may break down or oxidize at high temperatures which leads to varnish o...

Page 24: ...severely damage the pump A usually acceptable rule of thumb is that the inlet line velocity should not exceed 8 fps 2 5 m s A long inlet line or the use of several fittings may necessitate increasing...

Page 25: ...should be of a rating and size recommended by the fluid and filter manufacturers to achieve a recommended ISO contamination level NOTE Finer filtration may be required by other components in the syste...

Page 26: ...rts 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 50 F Test procedures are desc...

Page 27: ...24 Notes...

Page 28: ...Notes 25 Parker Hannifin Corporation Pump Motor Division Kings Mountain NC...

Page 29: ...Notes 26 Parker Hannifin Corporation Pump Motor Division Kings Mountain NC...

Page 30: ...The Buyer must analyze all aspects of the application and follow applicable industry standards specifications and other technical information provided with the Product If Seller provides Product optio...

Page 31: ...ed with the Software 19 Indemnity for Infringement of Intellectual Property Rights Seller is not liable for infringement of any patents trademarks copyrights trade dress trade secrets or similar right...

Page 32: ...ed Parker Distributor Parker Hannifin Corporation Pump Motor Division 101 Canterbury Road Kings Mountain NC 28086 Phone 704 730 2000 Fax 704 730 7411 www parker com pmd www phtruck com BLI 4 HY13 PMD5...

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