GORMAN-RUPP PUMPS GMS Series Installation, Operation And Maintenance Manual
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GORMAN-RUPP PUMPS GMS Series Installation, Operation And Maintenance Manual

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OM-04386-04
February 8, 2008
Rev. B 07‐12‐19
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
ROTARY GEAR PUMPS
MODELS
GMS SERIES PUMPS
D, G, J, N & R SIZES
GORMAN‐RUPP PUMPS
www.grpumps.com
e
2008 Gorman‐Rupp Pumps
Printed in U.S.A.

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  • Page 1 OM-04386-04 February 8, 2008 Rev. B 07‐12‐19 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL ROTARY GEAR PUMPS MODELS GMS SERIES PUMPS D, G, J, N & R SIZES GORMAN‐RUPP PUMPS www.grpumps.com 2008 Gorman‐Rupp Pumps Printed in U.S.A.
  • Page 2 Register your new Gorman‐Rupp pump online at www.grpumps.com Valid serial number and e‐mail address required. RECORD YOUR PUMP MODEL AND SERIAL NUMBER Please record your pump model and serial number in the spaces provided below. Your Gorman‐Rupp distributor needs this information when you require parts or service. Pump Model: Serial Number:...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ........... PAGE I - 1 SAFETY - SECTION A .
  • Page 4 TABLE OF CONTENTS (continued) PUMP MAINTENANCE AND REPAIR - SECTION E ....PAGE E - 1 PARTS KEY: Typical GMS D, G, J And N Pump Models .

  • Page 5: Introduction

    GMS SERIES OM-04386 INTRODUCTION Thank You for purchasing a Gorman‐Rupp Rotary WARRANTY INFORMATION Gear Pump. This manual is designed to help you achieve the best performance and longest life from The warranty provided with your pump is part of your Gorman‐Rupp Rotary Gear pump. Read this Gorman‐Rupp's support program for customers...
  • Page 6 OM-04386 GMS SERIES RECORDING MODEL AND SERIAL NUMBERS Please record the pump model and serial number in the spaces provided below. Your Gorman‐Rupp distributor needs this information when you require parts or service. Pump Model: Serial Number: PAGE I-2 INTRODUCTION...

  • Page 7: Safety - Section A

    GMS SERIES OM-04386 SAFETY - SECTION A This information is specific to Gorman‐Rupp GMS covered in this manual could lead to de­ Series Rotary Gear Pumps. It applies throughout struction of equipment, injury, or death. this manual and any manual or literature ac­...
  • Page 8 OM-04386 GMS SERIES valves are installed with their adjusting 3. Refer to the instructions in this ends toward the suction port. If bi‐rota­ manual before restarting tional operation is required, a pressure pump. relief device must be provided for both directions of flow.

  • Page 9: Installation - Section B

    GHC SERIES OM-04386 INSTALLATION - SECTION B Review all SAFETY information in Section A. Typical Pump Model GHS 1 1/2 Design Port Hydraulic Construction Pumps and related equipment must be in­ Style Size Size Code stalled and operated according to all na­ tional, local and industry standards.

  • Page 10: Preinstallation Inspection

    OM-04386 GMS SERIES Table B‐1. Theoretical Displacement If the pump will not be immediately installed, follow these procedures or damage to the pump will oc­ cur. Theoretical Displacement Hydraulic Per Revolution a. Do not flush the pump. Ensure that the port...

  • Page 11: Pump Installation

    GHC SERIES OM-04386 To flush the pump, use an approved solvent com­ Install the pump and motor on a base before patible with the liquid being pumped. Make cer­ mounting the base on a foundation. tain that the solvent will not attack pump com­ Mount the base on a foundation that will provide ponents, particularly seals and gaskets.

  • Page 12: Strainers

    OM-04386 GMS SERIES bows and fittings used in the lines increase friction When handling very hot or cold liquids, install a losses; minimize their use. Reducers used in suc­ pressure relief valve in any part of the system that tion lines should be the eccentric type installed can be valved off or isolated;...

  • Page 13: V-Belt Drives

    GHC SERIES OM-04386 The coupling is in alignment when the hub ends When using V‐belt drives, the power source and are the same distance apart at all points (see Fig­ the pump must be parallel. Use a straightedge ure B‐2). along the sides of the pulleys to ensure that they are properly aligned (see Figure B‐4).

  • Page 14: Tension Measurement

    OM-04386 GMS SERIES Ideal v‐belt tension is the lowest tension at which of 64 inches would require a deflection of 1 inch at the belt will not slip under peak load conditions. Do the force shown on the Tables for your particular not over‐tension v‐belts.

  • Page 15: Electrical Connections

    GHC SERIES OM-04386 Table B‐2. Sheave Diameter (In.) Table B‐3. Sheave Diameter (Mm.) Deflection Force (Lbs.) Deflection Force (Kg.) Belt Deflection Force Belt Deflection Force Uncogged Cogged Uncogged Cogged Hy‐T Belts & Torque‐Flex Hy‐T Belts & Torque‐Flex Uncogged & Machined Uncogged &...
  • Page 16 OM-04386 GMS SERIES alified electrician to make all electrical sphere. Install, connect, and operate connections. the motor in accordance with The Na­ tional Electrical Code and all local codes. If there is a conflict between the instructions in the manual accompany­...

  • Page 17: Operation - Section C

    GMS SERIES OM-04386 OPERATION - SECTION C Review all SAFETY information in Section A. Open all valves in the suction and discharge lines, and close all drain valves. Follow the instructions on all tags, labels and Consult the drive manufacturer's operating manu­...

  • Page 18: Operation

    OM-04386 GMS SERIES erating against closed valves could bring the liquid galling, seizing, damage to the seal or ex­ to a boil, build pressure, and cause the pump to cessive wear of rotating parts. rupture or explode. If overheating occurs, stop the Review the previous steps outlined in PRE‐OP­...

  • Page 19: Pressure Relief Valve Adjustment

    GMS SERIES OM-04386 Packing pumps must leak slightly to cool and lu­ Complete By‐pass Pressure bricate the shaft and to allow the shaft to turn freely. Complete by‐pass pressure is the maximum pres­ Wait until the pump has run long enough to reach...

  • Page 20: Troubleshooting - Section D

    GMS SERIES OM-04386 TROUBLESHOOTING - SECTION D Review all SAFETY information in Section A. Before attempting to open or service the pump: 1. Familiarize yourself with this manual. 2. Allow the pump to completely cool if overheated. 3. Check the temperature before open­...

  • Page 21: Troubleshooting Chart

    OM-04386 GMS SERIES TROUBLESHOOTING CHART TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP FAILS Air leak in suction line; end of suction Check and correct as required. line not submerged; foot valve blocked TO PRIME OR or jammed; insufficient liquid in sump or LOSES PRIME tank.
  • Page 22 GMS SERIES OM-04386 TROUBLESHOOTING CHART (Cont.) TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP REQUIRES Pump and/or drive mounting not Tighten mounting hardware; realign TOO MUCH secure; drive misaligned. drive. POWER (Cont.) Power source undersized. Check power requirements for applica­ tion; resize as required.

  • Page 23: Preventive Maintenance

    OM-04386 GMS SERIES tion at 250 hours will give insight into the wear rate PREVENTIVE MAINTENANCE for your particular application. Subsequent inspec­ tions should be performed at regular intervals of Since pump applications are seldom identical, and 2000 hours. Critical applications should be in­...
  • Page 24 GMS SERIES OM-04386 MAINTENANCE AND REPAIR - SECTION E MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK OPERATING PERFORMANCE. Pump Model Your pump model number and serial number are shown on the Parts List, furnished as a separate document with this manual.

  • Page 25: Typical Gms D, G, J And N Pump Models

    OM-04386 GMS SERIES 46166-311 Shown: Standard Model With 90 Ports, Foot Bracket And Head‐Mounted Relief Valve. Also Available With 180 Ports And/Or Head Jacket, Backhead Jacket And Housing‐Mounted Relief Valve. Coverplate Kit Replaces Either Relief Valve When Not Used. NOTE: Refer to Seal Appendix, Section F for details of the seal assembly and related components.
  • Page 26 GMS SERIES OM-04386 PARTS KEY FOR FIGURE E‐1 Note: Item numbers cross reference to specific part numbers on the separate Parts List. ITEM PART NAME ITEM PART NAME HEAD KIT FOOT BRACKET KIT -HEAD ASSEMBLY -FOOT BRACKET 01AA -HEAD -CAPSCREW...
  • Page 27 OM-04386 GMS SERIES 46166-313 Shown: Standard Model With 90 Ports, Foot Bracket And Head‐Mounted Relief Valve. Also Available With 180 Ports And/Or Head Jacket, Backhead Jacket And Housing‐Mounted Relief Valve. Coverplate Kit Replaces Either Relief Valve When Not Used. NOTE: Refer to Seal Appendix, Section F for details of the seal assembly and related components.
  • Page 28 GMS SERIES OM-04386 PARTS KEY FOR FIGURE E‐2 Note: Item numbers cross reference to specific part numbers on the separate Parts List. ITEM PART NAME ITEM PART NAME HEAD KIT BACKHEAD ASSEMBLY -HEAD ASSEMBLY -BACKHEAD 01AA -HEAD -BACKHEAD GASKET 01AB...

  • Page 29: Pump Disassembly

    OM-04386 GMS SERIES PUMP DISASSEMBLY AND and/or maintenance personnel to en­ sure that applications and/or mainte­ REASSEMBLY nance procedures not addressed in this manual are performed only after estab­ Review all SAFETY information in Section A. lishing that neither personal safety nor...

  • Page 30: Preparing For Disassembly

    GMS SERIES OM-04386 In the instructions which follow the FRONT is the Head/Idler Kit (01/02) head assembly end of the pump and the REAR is Disengage the hardware (B) and separate the the drive (or backhead) end of the pump.

  • Page 31: Backhead Removal (06)

    OM-04386 GMS SERIES lated components, then proceed as follows with Housing Assembly (04, D, G, J, N Sizes Only) pump disassembly. (Figure E‐1 Only) NOTE Remove the nuts (D) and slide the stuffing box The shaft bushing (04B) may be damaged during (04N) off the rotor shaft assembly (03A).

  • Page 32: Bushing Preparation

    GMS SERIES OM-04386 Bushing Preparation Backhead (06) (Figure E‐2 Only) When replacing bushings, lightly oil the O.D. of the replacement bushing before installation. Clean and inspect the backhead (06) with a cloth soaked in fresh cleaning solvent. Replace the backhead if badly worn or damaged.

  • Page 33: Head/Idler Kit

    OM-04386 GMS SERIES shaft and rotor must be replaced as an assembly. Appendix, Section F, for installation of the seal Small scratches can be dressed with a fine file or and related components. emery cloth. Replace the rotor/shaft assembly or any other parts if wear or damage is extensive.

  • Page 34: Relief Valve Disassembly

    GMS SERIES OM-04386 Table E‐1. End Clearance Gaskets CLEARANCE HOUSING HEAD ASSY (Based on Liquid Viscosity) 35C, 35D, 35J, 35L & Feeler Gauge Rotor Reading Trims Rotor Trims (1) 0.015 0.000-0.002 (2) 0.015 (1) 0.006 (2) 0.015 0.003-0.006 (2) 0.015 (1) 0.006...

  • Page 35: Relief Valve Reassembly

    OM-04386 GMS SERIES PARTS KEY 10AA VALVE BODY 10AB WARNING PLATE 10AD POPPET 10AE SPRING 10AF SPRING (OPTIONAL) 10AH SPRING GUIDE 10AJ O‐RING OR GASKET (OPTIONAL) 10AK BONNET 10AM CAPSCREW 10AN CAP 10AP CAP GSKT (OPTIONAL) 10AR TAG (OPTIONAL) JAM NUT 10AG O‐RING...

  • Page 36: Relief Valve (10) Installation

    GMS SERIES OM-04386 PUMP SINGLE CRACKING DIMENSION DOUBLE CRACKING DIMENSION HYDRAULIC SPRING PRESSURE “A” (INCHES) SPRING PRESSURE “A” (INCHES) SIZE OPTION CODE (PSI) (Fig. E‐7) OPTION CODE (PSI) (Fig. E‐7) 50 MIN. .60 FULLY OUT 100 MIN. .60 FULLY OUT &...

  • Page 37: Seal Appendix - Section Fpage

    GMS SERIES OM-04386 SEAL APPENDIX - SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 04A HOUSING 04B FLG SHAFT BUSHING 04N MECH SEAL GLAND 04R SHAFT SNAP RING MECH SEAL ASSY 05P GASKET STUD SHAFT KEY ASSEMBLED VIEW 16708-4 Figure F‐1. Standard Friction Drive And Optional 60A And 61J Mechanical Seals...
  • Page 38 OM-04386 GMS SERIES Seal Removal gency, carefully wash all metallic parts in fresh cleaning solvent and allow to dry thoroughly. (Figures E‐1 and F‐1) Separate the pump and driver and remove the shaft key (N). Seal components must be kept clean.
  • Page 39 GMS SERIES OM-04386 SEAL APPENDIX - SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 04A HOUSING 04B FLG SHAFT BUSHING 04N LIP SEAL GLAND LIP SEAL 05P GASKET 06F OIL HOLE COVER STUD SHAFT KEY ASSEMBLED VIEW 16708-6 Figure F‐2. Optional 65A Lip Seal...
  • Page 40 OM-04386 GMS SERIES Seal Removal Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent. (Figures E‐1 and F‐2) Separate the pump and driver and remove the shaft key (N). Most cleaning solvents are toxic and There are no provisions for draining oil from the flammable.

  • Page 41: Positive Drive (Option 60D) Seal

    GMS SERIES OM-04386 SEAL APPENDIX - SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 04A HOUSING 04B FLG SHAFT BUSHING 04N MECH SEAL GLAND 04R SHAFT SNAP RING MECH SEAL ASSY 05P GASKET STUD SHAFT KEY ASSEMBLED VIEW 16708-5 Figure F‐3. Positive Drive (Option 60D) Seal...
  • Page 42 OM-04386 GMS SERIES Seal Removal gerprints on the faces can shorten seal life. If necessary to clean the faces, use a clean (Figures E‐1 and F‐3) cloth and wipe in a circular pattern. Remove the nuts (D) and slide the gland (04N) and Inspect the seal components for wear, scoring, stationary seal components off the shaft as a unit.

  • Page 43: Standard Packing Seal (Option 65)

    GMS SERIES OM-04386 SEAL APPENDIX - SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 04A HOUSING 04B FLG SHAFT BUSHING GLAND PACKING KIT STUD SHAFT KEY ASSEMBLED VIEW 16708-7 Figure F‐4. Standard Packing Seal (Option 65) SEAL APPENDIX PAGE F - 7...
  • Page 44 OM-04386 GMS SERIES Seal Removal (Figures E‐1 and F‐4) Separate the pump and driver and remove the shaft key (N). Remove the nuts (D) and slide the gland (04N) and packing rings (05) off the shaft as a unit. Remove the gasket (05P).
  • Page 45 GMS SERIES OM-04386 Some channel‐type packing with a lead core may Remove the dowel from the gland bore. Carefully require a slight gap between packing rings to allow slide the assembled gland and packing rings onto for expansion. Consult the packing manufacturer's the shaft until the packing rings seat against the installation instructions and follow the recommen­...

  • Page 46: O-Ring Appendix - Section G

    GMS SERIES OM-04386 O‐RING APPENDIX - SECTION G O‐ring Part Numbers are based on the hydraulic (every pump does not necessarily use each O‐ring size of the pump, which is included in the pump identified). O‐ring part numbers begin with a 5‐digit model number.
  • Page 47 For Warranty Information, Please Visit www.grpumps.com/warranty or call: U.S.: 419-755-1280 Canada: 519-631-2870 International: +1-419-755-1352 GORMAN‐RUPP PUMPS...

This manual is also suitable for:

Ghs seriesGhs 1 1/2 gf 32Gms 1 1/2 gc 3

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