Parker PGP640 Service Manual
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Parker PGP640 Service Manual

Cast iron pumps
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Table of Contents

PGP/PGM 600 Series
Catalog HY13-PMD600-SM/US
Gear Pumps & Motors Service Manual
PGP 600 Series Cast Iron Pumps Service Manual

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Summary of Contents for Parker PGP640

  • Page 1 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Gear Pumps & Motors Service Manual PGP 600 Series Cast Iron Pumps Service Manual...

  • Page 2: Table Of Contents

    Table of Contents General Information ........................... 1-4 Single Pump ............................1 Use Genuine Parker Replacement Parts ..................2 Tool List ............................3-4 Exploded View ............................5 Bill of Materials ............................6 Disassembly Instructions ........................ 7-10 Assembly Instructions ........................11-17 Guidelines of Acceptable Wear .....................

  • Page 3: General Information

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US General Information Gear Pumps & Motors Service Manual Single Pump SAE 2 or 4 Bolt Balanced Thrust Plates Mounts Minimize Friction & Leakage Case Hardened Gears Cast Iron Housing SAE Split Flange and ODT Ports Low Friction Bushing Coating 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.

  • Page 4: Use Genuine Parker Replacement Parts

    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 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.

  • Page 5: Tool List

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Catalog HY13-PMD600-SM/US General Information Gear Pumps & Motors Service Manual Tool List Arbor press Bearing puller (Owatonna Tool Co. M D - 956 or equivalent) Deburring tool (an old file with cutting teeth ground off) 1-1/2"...
  • Page 6 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Catalog HY13-PMD600-SM/US General Information Gear Pumps & Motors Service Manual Bushing Installation Tool: A.I.S.I 8620 Bearing Quality Steel Heat Treated Pump/Motor C Dia. D Dia. .06" + .000" .06" PGP/PGM610 3.000" .854" .854" 1.250 - .002" + .000"...

  • Page 7: Exploded View

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Exploded View Gear Pumps & Motors Service Manual 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...

  • Page 8: Bill Of Materials

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Bill of Materials Gear Pumps & Motors Service Manual ITEM DESCRIPTION QUANTITY Shaft End Cover, Flange Gear Housing, Body Gear Shaft, Drive Gear Driven Gear, Idler Gear Drive Screw Hex Nut Name Plate Snap Ring Stud Pump Seal Element Pump Seal Energ...
  • Page 9 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Disassembly Instructions Gear Pumps & Motors Service Manual 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 seriously damage parts. 2.

  • Page 10: Disassembly Instructions

    5) Remove section seal if didn’t come off with the shaft end cover (Fig. 5). Replace with new seal. Install snugly back into bottom of shaft end cover for re-assembly. Contact an authorized Parker Service Center to determine and order the proper seal kit for your pump. Figure 5 6) Remove the thrust plate (Fig.
  • Page 11 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Disassembly Instructions Gear Pumps & Motors Service Manual 7) Place match marks on gears before removing (Fig. 7). This will serve as a reference when reassembling the motor. Figure 7 8) Carefully remove drive gear first (Fig. 8). Avoid tapping the gear teeth together or against other hardened surfaces.
  • Page 12 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Disassembly Instructions Gear Pumps & Motors Service Manual 11) Remove the snap ring (Fig. 11). Snap ring is located in front of the shaft seal ring. Figure 11 12) Remove the lip seal (Fig. 12). Be careful not to damage seal bore in pump body.
  • Page 13 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual Start Assembly 1) Before start, clean all machined surfaces and make sure are free of debris. 2) Prep new lip seal for replacement (Fig. 1). Figure 1 3) Grease new lip seal (Fig.

  • Page 14: Assembly Instructions

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual 5) Replace bearing (Fig. 5). Place new bearing over lip seal for installation. Figure 5 6) Press new bearing over lip seal (Fig. 6 & 7). Using arbor press, seat new bearing flush with lip seal.
  • Page 15 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual 7) Assemble the snap ring (Fig. 8 & 9). Using snap ring pliers, seat new snap ring on top of bearing and lip seal. Figure 8 Figure 9 8) Mount shaft end cover facing down in a vise (Fig.
  • Page 16 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual 10) Assemble new sealing parts in pressure plate and verify orientation. The sealing parts can be fixed with grease. (see below for steps to install sealing parts correctly) i.
  • Page 17 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual 11) Assemble the lower thrust block into the motor body (Fig. 13), using grease if needed on sealing parts. 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.
  • Page 18 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual 15) Slide a lubricated steel shaft seal sleeve over the drive gear (Fig. 17). This will protect the gear while installing the shaft end cover. Figure 17 16) Verify section seal is free of debris and firmly on bottom of shaft end cover.
  • Page 19 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Assembly Instructions Gear Pumps & Motors Service Manual 19) Torque diagonally opposed fasteners to correct torque. (Fig. 21). Do not lubricate fastener threads before assembly. Follow torque guide below. Figure 21 600 Series Torque Guide Series Lbs-ft PGP610/PGM610...
  • Page 20 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Guidelines for Acceptable Wear Gear Pumps & Motors Service Manual Gear Housing Wear in excess of .005" cut-out necessitates replacement of the gear housing body. Place a straight-edge across bore. If you can slip a .005" feeler gauge under the straight-edge in the cut-out area, replace the gear housing body.

  • Page 21: Guidelines Of Acceptable Wear

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Guidelines for Acceptable Wear Gear Pumps & Motors Service Manual Bushings Bushings must be replaced if PTFE coating is worn through or if scored or blackened. Bushings should fit into the bore with a heavy press fit Seals and Gaskets Replace all rubber and polymer seals, including all o-rings, thrust plate channel seals, shaft seal and gasket seals.

  • Page 22: Fluid Recommendations

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Fluid Recommendations Gear Pumps & Motors Service Manual Hydraulic Oil Recommendations Petroleum Oils (Mineral-based) When choosing your Hydraulic Oil, duty cycle and oil temperature must be factored in to optimize your system performance since hydraulic systems often work under Viscosity Recommendations extreme temperature changes, especially in moderate to Optimum operating viscosity is considered to be about...
  • Page 23 PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Fluid Recommendations Gear Pumps & Motors Service Manual Hydraulic Oil Recommendations (Continued) Petroleum Oils (Mineral-based) (Continued) Operating Temperature Filtration The optimum oil operating temperature is in the range of Good filtration assures improved service life at today’s high 120°-140°F (49°-60°C).
  • Page 24 3000 psi (2000/2500 psi in the wider gear widths) should be In general, these oils have low viscosity and may be used reviewed with your Parker sales representative. only at reduced operating pressures and oil temperatures. Water-in Oil (60/40) invert Emulsions...

  • Page 25: Start-Up Procedure / Test Procedure

    PGP/PGM 600 Series Catalog HY13-PMD600-SM/US Start-up Procedure / Test Procedure Gear Pumps & Motors Service Manual Recommended Start-up Procedure for New or Rebuilt Pump Before installing a new or rebuilt pump, back off the main After connecting the lines and mounting the replacement relief valve until the spring tension on the adjusting screw unit, operate the pump at least two minutes at no load and is relieved.

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