PRODUCT SERVICE MANUAL FOR _G3D_ _-350 and
Contents
1. CAUTION SPECIAL NOTE To service mechanical seal and ball bearings ONLY perform H 3 Steps 1 through 5 and H 4 Steps 7thru 11 Only Determine pump model identification identified on pump nameplate to select applicable pump assembly shown in Figure 4 through 7 Refer to that assembly for following instructions 1 Close suction and discharge piping to pump Vent pressure from pump Disconnect piping Remove drain plugs 5 or 32 or seal tubing 35 36 57 42 71 79 on C face pumps and drain unit Remove pump from driver coupling and base plate Remove coupling hub and key 16 or 31 Remove bearing retainer 17 or 43 from inboard cover 9 or 46 by removing bolts 18 or 47 and lockwashers 30 if present Remove assembled power rotor 11 or 63 from inboard cover 9 or 46 Removal of power rotor 11 or 63 includes removal of snap rings 13 or 42 ball bearing 15 or 49 seal spacers 14 or 48 and mechanical seal 25 4 Disassemble power rotor 11 or 63 as follows a Using a flat nosed tool such as a screw driver remove snap rings 13 or 42 from groove in power rotor 11 or 63 on both sides of ball bearing 15 or 49 Sealed ball bearing 15 or 49 is assembled to power rotor 11 or 63 with light press fit Ball bearing 15 or 49 may be removed by using bearing puller or vertical arbor press When using press place two pieces of key stock through openings of mechanical seal seat adapter2. S FIT amer es SN Sins para SRE v AR 4 4 A 1 ANSY rrr o N g PRSE pem mum SN dee 4 NI RA 1I 3 AN ee oT i 47 a0 IF VIEW of EGCHG 3DH lt S gt 400 4 42 SLOT IN BEARING SPACER MES IN COVER TORQUE TO 150410 LB FT TORQUE 150410 LB FT ENLARGED VIEW OF SEAL WITH O RING SEAT TORQUE LB FT TORQUE 98 55 LB FT VIEW ARRANGEMENT 17 Figure 7 AG3D_CC S 400 Assembly INSTALL BUSHING PIECE NO BB TO END COVER PIECE NO 48 USING LOCTITE RETAINING COMPOUND NO 609 REF ES 2 3 3 D1 PER ES 3 14 1 IDLER STOP LUGS ON MAU ACER d aca CENTERNE AS SH TORQUE 5545 LB FT ET ST RR 2 2 B 7 7 5 S S 287 o GG WY SS FURNISHED S STEEL CASE PUMPS 2242 2 22 gt A 55 ZZ NN SN 2221 Sd A i D E 7 f 38 Axe et oe eh er 5 Sl 7 I N E CSS ESSN sop BREST 1 PN CA TINA TIT TEAS TORQUE 21 ae 30 2 LB FT Q Oo IF REQUIRED 48 LOT IN BEARING Ub EE ce TORQUE TO 150410 LB FT SEAL OIL RETURN LINE FROM SEAL CHAMBER TORQUE TO 150310 LB FT VIEW OF
3. a 222272 5 30 N N Nu NY 1 4 Kigi K NNA MR AERE e 22 ET 7 4555 1 7 Vy a d FC Hr 5555 555553 TVA nux H z ZN zl Pm cc gt 5 _ ______ VIEW HYDRUSTATIC THRUST Q ren 10 Y RNISHED WITH SERI infe TORQUE TO TORQUE TO 120 10 LBS FT 120410 LBS FT SEAL WITH O RING SEAT VIEW OF AG3DKH CS 350 15 FIGURE 5 AG AND BG3D CCS TORQUE TO 70 5LB FT 09 TORQUE TO 85 10 LB FT ofa VIEW OF HYDROSTATIC THRUST TORQUE TO 35 70 5 LB FT 390 INSTALL BUSHING IDP 33 TO END COVER IDP 9 WITH LOCTITE ES 2 3 3 D1 PER ES 3 14 1 IDLER STOP LUGS ON BUSHING TO BE LOCATED ON HORIZONTAL CENTERNE AS SHOWN QQ 9 00 2 277 WALA ii N Q E 2 ESAS RNAI E 1 suene 1 SULLY WEEE Tp 4 ez m Zp 2 AC S mss M TORQUE TO TORQUE TO 38 2 LB FT 1201210 LB FT GASKET MAY BE FURNISHED WITH IDP 25 TORQUE TO a2 22 120210 LB FT SEAL WITH RING SEAT VIEW DF STRAIGHT THRU INLET HEAD 16 FIGURE 6 AG EG HG3D S2 400 AND AG3DKH S 400_ ASSEMBY TORQUE TO 55 5 LB FT G s m 5 OYET E O O OO GIG
4. COLFMX Fluid Handling PRODUCT SERVICE MANUAL FOR _G3D__ 350 and 400 SERIES PUMPS Idler Cup and Hydrostatic Thrust Designs AN WARNING The Imo General Installation Operation Maintenance and Troubleshooting Manual No SRM00046 as well as all other component manuals supplied with these type units should be read thoroughly prior to pump installation start up operation maintenance or troubleshooting Manual No SRM00080 Rev 04 13 0321 September 2013 I mo Pump 1710 Airport Road PO Box 5020 Monroe NC USA 28111 5020 Tel 1 704 289 6511 Email cc colfaxcorp com Web colfaxcorp com ALLWEILER COT PURITECH HOUTTUIN IMO LSC ROSSCOR TUSHACO WARREN 1 IMPORTANT NOTE The importance of seal chamber priming cannot be overemphasized Due to the prevalence of seal damage and leakage caused by not filling the seal chamber with liquid before putting a pump in service this page is located at the beginning of this document SEAL CHAMBER PRIMING Fill mechanical seal chamber with liquid to insure seal does not start dry This can be done by removing seal vent set screw and pouring liquid into vent passageway before opening pump inlet Alternately seal chamber can be vented in situations where inlet pressure is above atmospheric by opening inlet and discharge valves and then loosening seal vent plug to allow positive inlet pressure to push air out of seal chamber until oil fl
5. SRM00046 F OPERATION F 1 LIQUID LIMITATIONS Never operate with thin liquids such as solvents or water Pump is designed for liquids having general characteristics of oil F 2 OPERATING LIMITS CAUTION within pump s capabilities ATTENTION Operating conditions such as speed fluid viscosity temperature inlet pressure discharge pressure filtration duty cycle drive type mounting etc are interrelated Due to these variable conditions specific application limits may be different from operational limitations Equipment must not be operated without verifying system operating requirements are Under no circumstances are the following operating limits specified in table 1 to be exceeded without specific approval from Imo Pump Table 1 Normal Pump Operating and Structural Limits Condition Limit Maximum Speed 2500 rpm Minimum Viscosity 32 SSU Maximum Viscosity figure 1 1 Letter Designator 2500 SSU 1 Letter Designator H 15000 SSU Minimum Liquid Temperature 0 Maximum Liquid Temperature figure 1 1 Letter Designator B 180 1 Letter Designator 220 F Maximum Inlet Pressure 50 psig Maximum Discharge Pressure Continuous Duty 500 psig Filtration Drive Mounting Refer to General Instruction Manual CA 1 Direct or Belt Foot mounted in any attitude Airborne Noise Levels dBA F3a Measuring Conditions e Distance to Pump 1 Mete
6. O ring X Axial inlet pumps only 22 2 Thrust Spacer 92 16 Washers C Face Pumps Only 23 2 Hex Cap Screws X Minor Repair Kit Items XX Major Repair Kit Items Items marked X are included in Major Repair Kit Not used in DKH pumps Table 3 G3D 400 Pump Parts List Not used in DKH pumps H PUMP MAINTENANCE IDP QTY DESCRIPTION KIT IDP QTY DESCRIPTION KIT 1 1 Case 43 1 Bearing Retainer 2 1 Inlet 46 1 Inboard Cover 4 8 Hex Bolt Foot Mount Only 47 4 Brg Retainer Hex Bolts 5 2 Pipe Plug Foot Mount Only 48 1 Bearing Spacer J Seat Seal and DKH Only 6 1 Pin Stop XX 49 1 Bearing X 7 1 Fastener Seal X 50 1 Housing Spacer 9 2 Gasket 1 for C Face X 51 2 Thrust Spacer 21 2 Idler XX 52 2 Thrust Spring Lock Washer 22 1 Balance Piston Housing XX 53 2 Thrust Hex Bolt Foot Mount Only 23 2 Cups XX 54 8 Hex Bolts 24 1 Rotor Housing XX 63 1 Power Rotor XX 25 1 Seal X 64 1 Pipe Plug Steel Only 26 1 Tube 71 1 Tubing C Face Only 27 2 Tube O ring X 80 1 Seal Seat Adapter O ring Seat Seal only 28 2 Housing amp Inboard Cover X 83 1 Seal Gasket X O ring 29 1 Thrust Plate XX 86 1 Power Rotor Balance Piston XX C Face Only 30 16 Washers 8 on C Face 79 2 90 Tube Fitting C Face Only 31 1 Key 88 1 Inlet O ring X Axial inlet pumps only 38 1 Seal Spacer 95 8 Nuts C Face only 42 2 Retaining Ring X X Min
7. STRAIGHT THRU INLET HEAD ul ENLARGED VIEW OF SEAL WITH O RING SEAT 18 CERTIFIED ISO 9001 lt i NE E 5 W z NC 2 Accredited by the Council National Accreditation Program for Accreditation RvA Wr COLFAX Fluid Handling Imo Pump 1710 Airport Road PO Box 5020 Monroe NC USA 28111 5020 Tel 1 704 289 6511 Toll 1 877 853 7867 Email cc colfaxcorp com Web colfaxcorp com O 2012 Colfax Fluid Handling all rights reserved ALLWEILER COT PURITECH HOUTTUIN IMO LSC ROSSCOR TUSHACO WARREN 19
8. ring 13 or 42 CAUTION ATTENTION Ball Bearing 49 will be damaged if installed by pressing on outer race h Install outer snap ring 13 or 42 in groove of power rotor 11 or 63 9 Install gasket 44 or 83 in inboard cover 9 or 46 Gasket may come with replacement seal Gasket 44 or 83 not required with DHK pump see assembly drawings 4 and 6 10 Install assembled power rotor 11 or 63 in pump centering all parts as they enter inboard cover 9 or 46 Align one of openings in spacer 14 or 48 over drain in inboard cover 9 or 46 11 Install bearing retainer 17 or 43 on inboard cover 9 or 46 using bolts 18 or 47 and lockwashers 30 if present Torque bolts 18 or 47 to value on assembly drawing 12 Install idlers 19 or 21 into housing 2 or 24 by meshing threads with power rotor thread 13 If idler cup design install cups 20 or 23 on idlers 19 or 21 14 Install spacer 43 or 50 on suction end of case 1 flush with edge of housing 2 or 24 15 Install bolts 23 or 53 and lock washers 24 or 52 in thrust plate 21 or 29 Install spacers 22 or 51 on bolts 23 or 53 12 16 Install thrust plate assembly including thrust plate 21 or 51 washers 24 or 52 bolts 23 or 53 and spacers 22 or 51 on housing 2 or 24 Torque bolts 23 or 53 to value on correct assembly drawing 17 Install gasket 8 or 5 or O ring 88 in groove in inlet head 26 or 2 18 Install in
9. 14 or 48 underneath ball bearing 15 or 49 on both sides of power rotor shaft Key stock should be long enough to support power rotor 11 or 63 as it is placed in press Position press ram against power rotor 11 or 63 coupling end face Gently press power rotor 11 or 63 through ball bearing 15 or 49 Ensure power rotor 11 or 63 does not fall to floor once ball bearing 15 or 49 is off of its diameter If pump has no seal DKH design in figure 4 or 6 power rotor disassembly is complete Remove spacer 14 or 48 and skip to step 6 If pump has mechanical seal proceed with step d For steps d thru g refer to figure 3 mechanical seal drawing 10 11 12 d If stationary seal face is J type remove spacer 14 or 48 and J type stationary seal seat from power rotor 11 or 63 e If seal is O ring type remove seal seat adapter 14 or 48 with stationary seal seat Remove stationary seat with O ring from seal seat adapter 14 or 48 Discard O ring f If single spring rubber bellows seal remove rotating seat from shaft 11 or 63 If multi spring seal disengage set screw and then remove rotating seal seat g Remove spacer 38 from shaft Remove gasket 44 or 83 from inboard end cover 9 or 46 Remove inboard cover 9 or 46 by removing bolts 10 or 4 or nuts 95 if Size 400 C face unit Also remove washer 30 or 92 where applicable Remove and discard gasket 8 or 9 from inboard cover 9 or 46 o
10. Assemble bushing 33 or 86 into inboard cover 9 or 46 Allow 10 minutes to dry before proceeding with assembly Install O ring 6 or 28 on inboard cover Install inboard cover 9 or 46 into discharge port side of case 1 using bolts 10 or 95 and lock washers 92 or 30 if present Ensure seal vent 57 or 5 is facing up and pin 4 or 26 in housing mates with hole in inboard cover 9 or 46 Torque bolts 10 or 95 to value on assembly Skip to step 7 Install O ring 6 or 28 on balance piston housing 47 or 22 Install balance piston housing 47 or 22 in case 1 lining up hole in balance piston housing 47 or 22 with pin 4 or 26 in rotor housing 2 or 24 Install gasket 8 or 9 on inboard cover 9 or 46 Install inboard cover 9 or 46 into discharge port side of case 1 using bolts 10 or 4 and lockwashers 92 or 30 if present Ensure seal vent 32 or 5 is facing up Torque bolts 10 or 4 to value on correct assembly drawing Assemble power rotor 11 or 63 and mechanical seal 25 as follows Note If no mechanical seal DKH design in figure 4 and 6 assembly spacer 14 or 48 in inboard cover 9 or 46 and skip to step f below If pump has mechanical seal proceed with step a below a Assemble spacer 38 onto shaft 11 or 63 11 For steps b e refer to figure 3 mechanical seal drawing b If seal is a single spring type rubber bellows type apply light coat of system fluid to inside
11. ODUCTION This instruction manual covers series G3D 350 400 Imo pumps This series of pumps has been designed for use in hydraulic lubricating seal distillate residual fuel and crude oil applications The model and design construction of each pump can be identified by the designator code on the pump nameplate Definitions of model designators are identified in figure 1 C DESCRIPTION OF EQUIPMENT G3D 350 and 400 Series pumps are positive displacement rotary screw pumps consisting of a precision bored housing which encloses a driven screw power rotor and two intermeshing following screws idler rotors These screws when rotating form a succession of closures or cavities As they rotate fluid is moved axially from inlet port to outlet port in a continuous uniform flow with minimum fluid pulsation and pump noise D PUMP MODEL IDENTIFICATION Instruction manual covers Imo Series G3D 350 and 400 pumps Model of each pump is identified on pump nameplate Refer to figure 1 and table 1 for instructional keys when using manual Figure 1 Model Designator Definitions 3D X X 350 X Basic Pump Modifiers A Latest Mod L i ead and Rotation B Hard Face Seals 350 Rotor Size E High Vacuum Service Blank 2D CW D 20 CCW 3004 ANSI Flange G 1 8D CW H 1 80 CCW H High Vacuum Service Je15DCW P2 16D CW 150 ANSI Flange zh gt 1 250 CW Design Modification 400 Ro
12. aintenance training Our factories provide maintenance as well as overhaul and test facilities the in event user prefers to return pumps for inspection or overhaul Factory overhauled pumps are normally tested and warranted as new for a period of one year from date of shipment For either field service or factory overhaul assistance contact your local Imo Sales Office or representative at Technical Customer Service Department in Monroe NC USA Most pumps have repair kits available Minor Repair Kits are used to repair leaking seals bad bearings and or for re assembly after pump tear down They include as applicable pump shaft seals packing all gaskets O rings and bearings Major Repair Kits are sufficient to rebuild completely worn out pumps to as new condition They include all parts found in Minor Repair Kits plus all major internal parts subject to wear Since kits have all necessary parts kit purchase is preferred rather than selecting individual parts When parts are individually selected from Parts List some needed components are often overlooked In addition mixing worn or used parts with new parts risks rapid wear and shortened service life from new parts 14 FIGURE 4 AG BG EG HG3D S AND AG3DKH 350 ASSEMBLY INVE J er Ende BE FURNISHED TORQUE TO 85 10 LB FT G GO weer AND EG PUMPS 722 ANS ANN 2 A SSSSSSSSSTSSSSSSSSS 4r ame T 22
13. ard O ring 6 or 28 H 5 PUMP ASSEMBLY NOTE 8 1 Prior to assembly of pump clean and inspect all parts for nicks and burrs Replace all worn or damaged parts Imo Pump recommends replacement of all O rings 6 28 88 gaskets 8 9 44 or 83 mechanical seal 25 and ball bearing 15 or 49 when these parts are disturbed from their previously installed positions Coat all parts with light lubricating oil to assist in assembly Inspect power rotor 11 or 63 shaft and remove any nicks or burrs which are present Polish power rotor shaft to remove any rust or oxidants that may be present under shaft sleeve Install O ring 6 or 28 in groove in housing 2 or 24 Install O rings 5 or 27 in grooves in tube 4 or 26 and install tube 4 or 26 in housing 2 or 24 Install housing 2 or 24 O ring end first in pump case 1 from suction end until stop pin 46 or 6 slot is properly aligned Install stop pin 46 or 6 with fastener seal 45 or 7 in case 1 If pump is C face version Figure 5 and 7 proceed below If pump is foot mount skip to step 4 a Clean and dry inboard cover 9 or 46 and balance piston bushing 33 or 86 mating surfaces with solvent Wipe Loctite T747 Primer or equivalent onto the mating surfaces of bushing 33 or 86 and inboard cover 9 or 46 Allow 1 to 5 minutes until primer is visibly dry Apply Locitite 609 or equivalent to bushing 33 or 86 and inboard cover 9 or 46 mating surfaces
14. diameter of bellows and slide mechanical seal rotating assembly on power rotor 11 or 63 until it seats against the shoulder of seal spacer 38 Wipe seal face with isopropyl alcohol and a lint free rag C Ifsealis a multi spring seal coat O ring inside of rotating seat with system fluid and slide mechanical seal rotating assembly on power rotor 11 or 63 until it seats against the shoulder of seal spacer 38 Tighten rotating seat set screw Wipe seal face with isopropyl alcohol and a lint free rag d If seal has a J type seat clean it with isopropyl alcohol and a lint free rag Then put a small amount of clean system fluid or light oil on its running face and install the running face against the stationary seat face e If seal has O ring type stationary seat install O ring in groove of mechanical seal stationary seat Install seat including O ring in seal seat adapter 14 or 48 ensuring that groove in back of stationary seat mates to spring pin in seal seat adapter 14 or 48 Clean seal face with isopropyl alcohol and a lint free rag Put a small amount of clean system fluid or light oil on seal running face Install the rotating ring running face against the stationary seat face f Install inner snap ring 13 or 42 in groove of power rotor 11 or 63 g Press bearing 15 or 49 on power rotor 11 or 63 pressing only on inner race of ball bearing 15 or 49 using an installation sleeve until it is located next to inner snap
15. let head 26 or 2 using bolts 10 or 4 and lockwashers 92 or 30 if present Torque bolts to value on correct assembly drawing NOTE Inlet head 26 or 2 can be rotated and repositioned in 90 degree increments to suit suction piping To change inlet position remove bolts 10 or 54 and rotate inlet head to desired position Install bolts 10 or 54 and torque to proper values indicated on assembly drawing 19 Install coupling hub key 16 or 31 Install and align pump and driver as specified in General Instruction Manual SRM00046 FIGURE 3 MECHANICAL SEAL DRAWING SINGLE SPRING RUBBER BELLOWS MECHANICAL SEAL ROTATING RING TYPE DRIVE BAND STATIONARY SEAT STATIONARY SEAT BELLOWS SEAT O RING ROTATING ASSEMBLY SEAL SEAT ADAPTER SPRING LOCK PIN SPRING HOLDER SEAL SEAT ADAPTER O RING TYPE SEAT TYPE SEAT MULTI SPRING MECHANICAL SEAL ROTATING RING J TYPE STATIONARY SEAT ee STATIONARY SEAT SEAL SEAT ADAPTER mE SEAT D RING SPRING ROTATING ASSEMBLY RETAINER LOCK PIN lig SEAL SEAT ADAPTER O RING TYPE SEAT J TYPE SEAT 13 1 TROUBLESHOOTING For assistance with troubleshooting see General Instruction Manual SRM00046 or SRMO00101 if pump is CE certified J FIELD AND FACTORY SERVICE AND PARTS Imo Pump maintains a staff of trained service personnel that can provide pump installation pump start up maintenance overhaul and troubleshooting supervision as well as installation and m
16. nor repair kit o rings gaskets shaft seal and bearings should be kept in stock so pump refurbishment after internal inspection can be accomplished CONTENTS Seal Chamber ituri 2 Safety and Table ol COMENS oett eese tu o eue eet evadit e ons tco oae ORAL dpud 3 A General Instructions 4 B Introduction oe t 4 C Description of od 4 D Pump Model des dettes torte teda a tiec te reete te 5 E tinent 5 EE 6 G Parts List and Noise Levels o eoo ere ee e ee ret Re eden Fu eger 7 thru 8 Pump Maintenance and Seal Drawing 8 thru13 l JroublesHiOOlij tos ete to nies du vei 14 J Field and Factory Service and Parts iet edhe ee See reet etu pacato edhe enka 14 K Assembly 9 reete eate ater ade p deco A 15 thru 18 A GENERAL INSTRUCTIONS Instructions found herein cover disassembly assembly and parts identification of G3D 350 and 400 series pumps Both original design with idler cups and newer design with hydrostatic idlers are covered where applicable NOTE Individual contracts may have specific provisions
17. or Repair Kit Items XX Major Repair Kit Items Items marked X are included in Major Repair Kit AN WARNING Failure to observe precautions while installing inspecting and maintaining pump can cause injury to personnel from accidental handling of liquids that may harm skin or clothing or fire hazard risks from flammable liquids or injury from high pressure fluid jets DANGER BEFORE working on equipment make sure all power to equipment is disconnected and locked out H 1 GENERAL COMMENTS NOTE Part number identifiers IDP contained within parenthesis such as 9 refer to circled numbers shown in pump parts list Tables 2 and 3 and on assembly drawings figures 3 through 7 De energize driver before starting with any maintenance action H 2 TOOLS REQUIRED Procedures described in manual require common mechanics hand tools a torque wrench dial indicators for alignment and a suitable lifting device such as slings straps etc H 3 PUMP DISASSEMBLY PROCEDURES NOTE _230 350 and 400 pumps incorporate highly finished precision parts that must be handled carefully to avoid damage to critical machined surfaces Parts removed should be tagged for identification and their exact positions in pump carefully noted so new parts or same parts are properly replaced without damage Fluid leakage from disassembly of pump may make floor slippery and can cause personal injury
18. ows from it See figure below EAL Filling or Venting Seal Cavity Using Seal Vent CAUTION Failure to fill or vent seal chamber as described above may cause damage to seal running faces which may result in seal leakage READ THIS ENTIRE PAGE BEFORE PROCEEDING FOR SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO EQUIPMENT THE FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL UN DANGER Failure to observe precautions noted in this box can result in severe bodily injury or loss of life Failure to observe precautions noted in this box can cause injury to personnel by accidental contact with equipment or liquids Protection should be provided by user to prevent accidental contact CAUTION ATTENTION Failure to observe precautions noted in this box can cause damage or failure of equipment Non compliance of safety Safety instructions where Safety instructions which shall be instructions identified by electrical safety is considered for reasons of safe the following symbol involved are identified by operation of pump and or protection of could affect safety for pump itself are marked by the sign persons AN ATTENTION ATTENTION If operation of pump is critical to your business we strongly recommend you keep a spare pump or major repair kit in stock at all times As a minimum a mi
19. r e Operation Cavitation Free e Tolerance 3 dB 94 3D Airborne Levels 90 86 82 78 74 70 66 62 Airborne Noise Level dBA 58 54 50 40 60 Horsepower 80 100 120 140 160 Figure 2 Airborne Levels G PARTS LIST Table2 QG3D 350 Pump Parts List IDP QTY DESCRIPTION KIT IDP QTY DESCRIPTION KIT 1 1 Case 24 2 Washer 2 1 Housing XX 25 2 Mechanical Seal X 4 1 Anti Rotation Tube 26 1 Inlet 5 2 Tube O rings X 30 4 Washers C Face Only 6 2 Housing Inboard Cover O X 32 2 Pipe Plug Foot Mount Only ring 8 2 Gasket 1 on C Face X 33 1 Balance piston Bushing XX C face pumps only 1 Inboard Cover 35 2 Pipe Nipple C Face Only 16 Hex Bolts 36 1 Pipe Coupling C Face Only 1 Power Rotor XX 37 1 Tube Fitting C Face Only 13 2 Snap Rings X 38 1 Seal Spacer 14 1 Spacer Seal Seat Adapter X 42 1 Tubing C Face Only 15 1 Bearing X 43 1 Housing Spacer 16 1 Key 44 1 Gasket O ring Seats Only X 17 1 Bearing Retainer 45 1 Fastener Seal X 18 4 Bearing Retainer Hex Bolts 46 1 Pin Stop XX 19 2 Idlers XX 47 1 Balance Piston Housing XX Not C Face 20 2 Idler Cups Idler Cup Design XX 57 1 90 Tube Fitting C Face Only Only 21 1 Thrust Plate XX 88 1 Inlet
20. r O ring 6 or 28 if pumps are C face design On C flange pumps ONLY press bushing 33 or 86 from cover 9 or 46 Cover may require heating to loosen Loctite before bushing 33 or 86 can be removed Do not heat to more than 250 F Remove inlet head 26 or 2 from case 1 by removing bolts 10 or 54 and lockwashers 92 or 30 if present Remove and discard gasket 8 or 9 or O ring 88 from inlet head 26 or 2 Remove thrust plate 21 or 29 and spacers 22 or 51 by removing bolts 23 or 53 and lock washers 24 or 52 If idler cup design remove cups 20 or 23 from idlers 19 or 21 Remove idlers 19 or 21 from housing 2 or 24 by unscrewing them from housing bores CAUTION ATTENTION Do not permit idlers 19 or 21 to drop as they emerge from housing 2 or 24 13 14 15 16 17 Remove housing spacer 43 or 50 from case 1 Remove pin stop 46 or 6 and fastener seal 45 or 7 from case 1 If pumps are not C face design remove balance piston housing 47 or 22 with O ring 6 or 28 This can be accomplished by pushing on suction end of housing 2 or 24 until balance piston 47 or 22 emerges Remove and discard balance piston O ring 6 or 28 Remove tube 4 or 26 with O rings 5 or 27 from housing 2 or 24 or balance piston housing 47 or 22 Discard O rings 5 or 27 10 18 Remove housing 2 or 24 and O ring 6 or 28 from inlet end of case 1 Disc
21. that vary from this manual Should any questions arise which may not be answered by these instructions refer to Imo General Installation Operation Maintenance and Troubleshooting Manual SRM00046 provided with your order For further detailed information and technical assistance please refer to Imo Pump Technical Customer Service Department at 704 289 6511 Manual cannot possibly cover every situation connected with installation operation inspection and maintenance of equipment supplied Every effort was made to prepare text of manual so that engineering and design data is transformed into most easily understood wording Imo Pump must assume personnel assigned to operate and maintain supplied equipment and apply instruction manual have sufficient technical knowledge and are experienced to apply sound safety and operational practices which may not be otherwise covered by this manual In applications where equipment furnished by Imo Pump is to become part of processing machinery these instructions should be thoroughly reviewed to ensure proper fit of said equipment into overall plant operational procedures A WARNING If installation operation and maintenance instructions are not correctly and strictly followed and observed injury to personnel or serious damage to pump could result Imo Pump cannot accept responsibility for unsatisfactory performance or damage resulting from failure to comply with instructions B INTR
22. tor Size Blank 2D CW D 2D CCW Series P 1 6D CW 1 350 CW A 1 0D CW 15 Letter Designator Seal Design B Rubber Bellows Buna Fitted Std Bearing Rotor Siz H Positive Drive Viton O ring Fitted Hi otor Size Temp Bearing 350 K Special Mounting No Seal 400 N Metal Bellows Seal Viton Fitted X Special Seal 4th Letter Designator T Carbide Seat 2 Letter Designator X Special Material Or C Circular Mounting Flange Construction H Special Mounting Flange Usually with previous letter K Axial Inlet 3 d Letter Designator 5 Steel Casing S Steel casing T Carbide Seat T Carbide Seat X Special Material Or X Special Material Or Construction Construction E ORDERING INSTRUCTIONS When corresponding with Imo Pump regarding Series G3D _ 350 and 400 series pumps refer to pump nameplate this instruction manual and assembly drawing as instructed below DI 5 From pump nameplate record pump model number serial number and manufactured date Record instruction manual number revision and date From instruction manual record figure numbers that apply to replacement part s From assembly drawing or parts list see table 2 provide IDP number s and names for replacement part s Give above information to your Imo service representative Imo sales and service representatives are listed herein and in General Instruction Manual
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