GORMAN-RUPP GHS Series Installation, Operation And Maintenance Manual
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GORMAN-RUPP GHS Series Installation, Operation And Maintenance Manual

Iron and steel pumps. g, j, n & ? sizes
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TVXY
OM ---05450---03
February 3, 2003
Rev. A
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
ROTARY GEAR PUMPS
MODELS
GHS SERIES
IRON AND STEEL PUMPS
G,J,N & R SIZES
THE GORMAN-RUPP COMPANY MANSFIELD, OHIO
www.gormanrupp.com
GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA
Printed in U.S.A.
Copyright by the Gorman-Rupp Company

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  • Page 1 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL ROTARY GEAR PUMPS MODELS GHS SERIES IRON AND STEEL PUMPS G,J,N & R SIZES THE GORMAN-RUPP COMPANY MANSFIELD, OHIO www.gormanrupp.com GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A. Copyright by the Gorman-Rupp Company...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ........... PAGE I --- 1 SAFETY --- SECTION A .
  • Page 3 TABLE OF CONTENTS (continued) PARTS KEY TYPICAL G, J, N & R SIZE GHS PUMP MODEL ......PAGE E---3 PUMP DISASSEMBLY .

  • Page 4: Introduction

    GHS SERIES OM -- 05450 INTRODUCTION Thank You for purchasing a Gorman-Rupp Rotary in other literature accompanying this unit, please Gear Pump. This manual is designed to help you contact your Gorman-Rupp distributor or the Gor- achieve the best performance and longest life from man-Rupp Company: your Gorman-Rupp Rotary Gear pump.
  • Page 5 OM -- 05450 GHS SERIES The following are used to alert personnel to procedures which require special attention, to those which could damage equipment, and to those which could be dangerous to personnel: Immediate hazards which will result in Hazards or unsafe practices which COULD severe personal injury or death.

  • Page 6: Safety

    OM -- 05450 SAFETY --- SECTION A covered in this manual could lead to de- This information is specific to Gorman-Rupp GHS Series Rotary Gear Pumps. It applies throughout struction of equipment, injury, or death. this manual and any manual or literature ac- companying the pump.
  • Page 7 OM -- 05450 GHS SERIES tional operation is required, a pressure relief device must be provided for both directions of flow. Operation without a pressure relief valve or with an improp- An overheated pump can cause severe erly installed relief valve could cause burns and injury.

  • Page 8: Installation

    Gorman-Rupp Company. --- Abrasive Duty Most of the information applies to a flooded suction Port Size: Gorman-Rupp rotary gear pumps are installation where liquid is supplied under pres- available in port sizes from 1 to 6 inches, depend- sure.

  • Page 9: Preinstallation Inspection

    OM -- 05450 GHS 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 a. Do not flush the pump. Ensure that the port...

  • Page 10: Pump Installation

    GHS SERIES OM -- 05450 Piping To flush the pump, use an approved solvent com- patible with the liquid being pumped. Make cer- Before establishing suction and discharge lines, tain that the solvent will not attack pump com- determine pump port positions and rotation. Fig- ponents, particularly seals and gaskets.

  • Page 11: Gauges

    OM -- 05450 GHS SERIES It is not recommended that a foot valve be installed The discharge and suction lines must be inde- pendently supported to avoid vibration and strain at the end of the suction line. If desired to install a on the pump.

  • Page 12: Coupled Drives

    GHS SERIES OM -- 05450 is disconnected before attempting to connect the pump drive; otherwise, per- sonal injury may result. NOTE See ROTATION in Section C before mounting the pump on the base. Figure B-3. Aligning Non-Spider Type Coupling Coupled Drives...

  • Page 13: V-Belt Tensioning

    Ideal v-belt tension is the lowest tension at which To use the Gorman-Rupp tensioner, measure the the belt will not slip under peak load conditions. Do belt span as shown in Figure B-5. Position the bot- not over-tension v-belts.

  • Page 14: Electrical Connections

    GHS SERIES OM -- 05450 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 &...
  • Page 15 OM -- 05450 GHS 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 16: Operation

    For temperature range consult The Gorman-Rupp Company. Before Starting the Pump Gorman-Rupp rotary gear pumps are bi- directional; however, the pumps are manufactured to rotate in one specific di- rection. If rotation is to be changed, the...

  • Page 17: Starting

    If the pump still does not deliver after consulting TROUBLESHOOTING and venting the discharge Monitor vacuum and pressure gauge readings to line, contact your local Gorman-Rupp Rotary Gear ensure that the pump is operating within normal Distributor or the factory.

  • Page 18: Strainer Check

    OM -- 05450 GHS SERIES Strainer Check If a strainer has been installed in the suction line, monitor vacuum gauge readings to detect block- If operating at high temperatures, allow the age. Check the strainer if flow rate begins to drop.

  • Page 19: Stopping

    OM -- 05450 GHS SERIES STOPPING pump and piping with an oil-based preservative to protect close-tolerance pump parts. When handling liquids that solidify when at rest If the pump will be out of service for an extended (tar, glue, etc.), flush the pump and piping with an...
  • Page 20 GHS SERIES OM -- 05450 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- ing any covers, plates, or plugs.
  • Page 21 OM -- 05450 GHS SERIES TROUBLESHOOTING CHART TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP FAILS Internal clearance too great. Check and readjust clearance if re- quired; see SETTING END CLEAR- TO PRIME OR ANCE in Maintenance and Repair, Sec- LOSES PRIME tion E.

  • Page 22: Troubleshooting

    GHS SERIES OM -- 05450 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;...

  • Page 23: Preventive Maintenance

    Gorman-Rupp rotary gear pump. For specific If the pump is equipped with a backhead bearing questions concerning your application, contact (heavy duty models), inspect for free rotation of the...
  • Page 24 Below the pump model number on the Parts List is a grouping of several alpha-numeric codes. This code identifies the optional components of the pump. Contact the Gorman-Rupp Company to verify performance and options. The following illustrations cover disassembly and reassembly for the pump models shown below.
  • Page 25 OM -- 05450 GHS SERIES 46167302 Shown: Standard Model With 90 Ports, Head-Mounted Relief Valve and Optional Foot Bracket. Also Available With Ports And/Or Jacketed Seal, Head Jacket, Housing-Mounted Relief Valve. A Coverplate Kit Replaces Either Relief Valve When Not Used.
  • Page 26 GHS SERIES OM -- 05450 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 07AJ ---BRG SPACER (IF REQUIRED) ---HEAD ASSEMBLY ---O-RING (IF REQUIRED)
  • Page 27 OM -- 05450 GHS SERIES PUMP DISASSEMBLY AND pump integrity are compromised by such applications or procedures. REASSEMBLY Review all SAFETY information in Section A. Follow the instructions on all tags, labels and Do not attempt to service the pump un- decals attached to the pump.
  • Page 28 GHS SERIES OM -- 05450 pumps are equipped with drain plugs in the head pipe wrench or other suitable tool to turn the rotor and backhead. Remove the plug(s) and drain the adjusting sleeve clockwise (as viewed from the pump before proceeding with disassembly.
  • Page 29 OM -- 05450 GHS SERIES parts have sharp edges which will grow 01AA sharper with use. 11AA NOTE The idler bushing (02B) may be damaged during removal. Do not remove the idler bushing unless re- 01AB placement is required. Remove the assembled idler (02) from the head as- sembly.
  • Page 30 GHS SERIES OM -- 05450 Cleaning and Inspection The throttle bushing (06AE) is a tight press fit in the backhead. Use an arbor (or hydraulic) press to re- move the bushing. Most cleaning solvents are toxic and 06A,06AA flammable. Use them only in a well ven- tilated area free from flame, sparks, and excessive heat.
  • Page 31 OM -- 05450 GHS SERIES press to install the bushing with one contin- Backhead Kit (06) uous motion until the bushing is fully (Figures E-1 and E-5) seated. Stopping in mid-stroke will cause the bushing to crack. After installation, Position the backhead (06AA) on the bed of an ar- check the bushing for cracks.
  • Page 32 GHS SERIES OM -- 05450 Appendix, Section F, for installation of the seal NOTE and related components. The O-rings (01E) that are installed between the head jacket (01G) and the head (Figure 1, 01A) are Head/Idler Kit (01 and 02) coated with PTFE (DuPont Teflon or equivalent).
  • Page 33 OM -- 05450 GHS SERIES ceed as follows with rotor adjusting sleeve installa- Tighten the rotor adjusting sleeve (07AA) in the tion. Use caution not to damage seal parts when backhead (06A) until the rotor bottoms against the installing the rotor adjusting sleeve.
  • Page 34 .020 Notes: Consult Pump Parts List For Rotor Trim Code. For Rotor Trim Codes Not Listed or for Special Applications, Consult Your Local Gorman-Rupp Distributor or the Factory. Table E-2. End Clearance Based on Rotor Trim Code MAINTENANCE AND REPAIR...
  • Page 35 OM -- 05450 GHS SERIES PARTS KEY 10AA VALVE BODY 10AB WARNING PLATE 10AD POPPET 10AE SPRING 10AF SPRING (OPTIONAL) 10AG O-RING 10AH SPRING GUIDE 10AJ O-RING OR GSKT 10C BONNET O-RING 10AK BONNET 10AM CAPSCREW 10AN CAP 10AP CAP GSKT (OPTIONAL)
  • Page 36 GHS SERIES OM -- 05450 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) 100 MIN. .60 FULLY OUT 50 MIN. .60 FULLY OUT...
  • Page 37 OM -- 05450 GHS SERIES 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) 100 MIN. .60 FULLY OUT 45 MIN. .60 FULLY OUT...
  • Page 38 GHS SERIES OM -- 05450 SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCKNUT SEAL ASSY 06A BACKHEAD ASSY SEAT SLEEVE O-RING 07H SHAFT CLIP SEAT SLEEVE 07S SEAT SLEEVE 07V SEAT SLEEVE O-RING 07AA ROTOR ADJ.
  • Page 39 OM -- 05450 GHS SERIES Seal Removal during reassembly. This could result in premature failure. If necessary to reuse an old seal in an emer- gency, carefully wash all metallic parts in fresh (Figures E-1 and F-1) cleaning solvent and allow to dry thoroughly.
  • Page 40 GHS SERIES OM -- 05450 If removed, position the seat sleeve (07S) over the with the sealing face up. Cover the sealing face shoulder on the bearing retaining nut (07AD) and with a clean tissue and use thumb pressure to press the sleeve onto the nut until fully seated.
  • Page 41 OM -- 05450 GHS SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY SEAL ASSY 06A BACKHEAD PIPE PLUG SEAT SLEEVE O-RING 07H SHAFT CLIP SEAT SLEEVE 07S SEAT SLEEVE...
  • Page 42 GHS SERIES OM -- 05450 excessive heat. Read and follow all pre- Seal Removal cautions printed on solvent containers. (Figures E-1 and F-2) The seal is not normally reused because wear pat- terns on the finished faces cannot be realigned See PUMP DISASSEMBLY and disassemble the during reassembly.
  • Page 43 OM -- 05450 GHS SERIES Assemble the rotor adjusting sleeve (07) as de- Lubricate the stationary element O-ring and posi- scribed in Pump Reassembly, Section E and po- tion the stationary element in the seat sleeve (07S) sition it on a flat surface with the drive end down.
  • Page 44 GHS SERIES OM -- 05450 SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY SEAL ASSY 06AA BACKHEAD 06AK SEAT SLEEVE 07B SEAT SLEEVE O-RING 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE...
  • Page 45 OM -- 05450 GHS SERIES Seal Removal Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent. (Figures E-1 and F-3) See PUMP DISASSEMBLY and disassemble the pump up to and including the Rotor Adjusting Most cleaning solvents are toxic and Sleeve (07).
  • Page 46 GHS SERIES OM -- 05450 Push this rotating subassembly onto the shaft until ervoir may be filled with light refrigeration oil com- the seal faces contact. Slide the seal spring over patible with the neoprene in the seal. Drain and refill the shaft until it seats against the seal retainer.
  • Page 47 OM -- 05450 GHS SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY CARTRIDGE SEAL ASSY 05C SHAFT O-RING 06A BACKHEAD ASSY PIPE PLUG 07B SEAT SLEEVE O-RING SEAT SLEEVE...
  • Page 48 GHS SERIES OM -- 05450 Seal Removal (Figures E-1 and F-4) See PUMP DISASSEMBLY and disassemble the Most cleaning solvents are toxic and pump up to and including the Rotor Adjusting flammable. Use them only in a well ven- Sleeve (07). As the rotor adjusting sleeve (07AA) is...
  • Page 49 OM -- 05450 GHS SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY BALANCED SEAL ASSY 05A SHAFT SLEEVE 05C SHAFT O-RING 06A BACKHEAD ASSY PIPE PLUG 07B SEAT SLEEVE O-RING...
  • Page 50 GHS SERIES OM -- 05450 Seal Removal (Figures E-1 and F-5) See PUMP DISASSEMBLY and disassemble the Seal components must be kept clean. pump up to and including the Rotor Adjusting Handle seal parts with extreme caution to Sleeve (07). As the rotor adjusting sleeve (07AA) is prevent damage.
  • Page 51 OM -- 05450 GHS SERIES Assemble the rotor adjusting sleeve (07) as de- Lubricate the stationary seat O-ring and position the stationary seat in the seat sleeve (07L) with the scribed in Pump Reassembly, Section E and po- sealing face up. Cover the sealing face with a clean sition it on a flat surface with the drive end down.
  • Page 52 GHS SERIES OM -- 05450 SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY FRONT MECH SEAL REAR CARTRIDGE SEAL 06A BACKHEAD ASSY PIPE PLUG 07B SEAT SLEEVE O-RING SEAT SLEEVE...
  • Page 53 OM -- 05450 GHS SERIES Seal Removal (Figures E-1 and F-6) See PUMP DISASSEMBLY and disassemble the Most cleaning solvents are toxic and pump up to and including the Rotor Adjusting flammable. Use them only in a well ven- Sleeve (07). As the rotor adjusting sleeve (07AA) is...
  • Page 54 GHS SERIES OM -- 05450 Position the rotating portion of the front seal onto Install the Reservoir Kit as shown in Figure F-6A the shaft with the sealing face toward the drive end and select a suitable barrier liquid according to the of the shaft.
  • Page 55 OM -- 05450 GHS SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY FRONT MECH SEAL REAR LIP SEAL SEAL GLAND 06AA BACKHEAD 06AD THROTTLE BUSHING SLEEVE PIPE PLUG 07G SPLIT GLAND SET...
  • Page 56 GHS SERIES OM -- 05450 Seal Removal Clean the seal cavity with a cloth soaked in fresh cleaning solvent. (Figures E-1 and F-7) See PUMP DISASSEMBLY and disassemble the pump up to and including the Rotor Adjusting Sleeve (07). Most cleaning solvents are toxic and Loosen the gland locknut (D) and remove the flammable.
  • Page 57 OM -- 05450 GHS SERIES abruptly and cause personal injury. Failure Carefully slide the gaskets and stationary seat over the shaft and into the throttle bushing sleeve bore to remove these clips will result in seal fail- until seated against the sleeve shoulder.
  • Page 58 GHS SERIES OM -- 05450 SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY PACKING SEAL --- PACKING RING(S) --- LANTERN RING --- SLINGER RING (IF REQ’D) 06A BACKHEAD ASSY 06AF LUBE FITTING...
  • Page 59 (see the Parts List accompanying your an angled gap; pressure on adjacent packing pump) be ordered from your Gorman-Rupp distrib- rings will cause them to work into the gap and pre- utor or the factory. However, if bulk commercial...
  • Page 60 GHS SERIES OM -- 05450 for expansion. Consult the packing manufacturer’s bore and compress it using a blunt ended sleeve installation instructions and follow the recommen- (split in half, same diameter as the split glands) and dations. mallet. Each successive layer must be com- pressed and rotated by 90_ to prevent excessive leakage.
  • Page 61 OM -- 05450 GHS SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY PACKING SEAL 06A BACKHEAD ASSY 06AF LUBE FITTING 07AC BALL BEARING 07AD BEARING RET NUT 07AJ BRG SPACER (IF REQ’D)
  • Page 62 GHS SERIES OM -- 05450 Packing Seal Removal YELLOW BLACK PACKING PACKING RING RINGS (Figures F-1 and F-9) THICK SPACER The pump does not need to be disassembled to re- CAPSCREWS move the packing seal. Remove the gland locknut (D), capscrews and gland retainers (07H) and split gland halves (07G).
  • Page 63 OM -- 05450 GHS SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BEARING LOCKNUT SHAFT KEY CARTRIDGE SEAL ASSY 05C SHAFT O-RING 06A BACKHEAD ASSY PIPE PLUG 07B SEAT SLEEVE O-RING SEAT SLEEVE...
  • Page 64 GHS SERIES OM -- 05450 flammable. Use them only in a well ven- Seal Removal tilated area free from flame, sparks, and (Figures E-1 and F-9) excessive heat. Read and follow all pre- See PUMP DISASSEMBLY and disassemble the cautions printed on solvent containers.
  • Page 65 GHS SERIES OM -- 05450 O-RING APPENDIX --- SECTION G Ref. Description Hyd. Dash No. Ref. Description Hyd. Dash No. Size Size 10AG Spring Head to Guide to Housing Bonnet 10AJ Bonnet to Head Jacket Valve Body to Head Valve or...
  • Page 66 For U.S. and International Warranty Information, Please Visit www.grpumps.com/warranty or call: U.S.: 419−755−1280 International: +1−419−755−1352 For Canadian Warranty Information, Please Visit www.grcanada.com/warranty or call: 519−631−2870 THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA...

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