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7

G. PARTS LIST 

Table 2 – Pump Parts List 

 

IDP QTY 

DESCRIPTION 

KIT  IDP QTY

DESCRIPTION 

KIT

1 1 

Case 

  42 2 Bearing 

Retaining 

Ring  X 

1  Inlet Head 

 

43 

Bearing Retainer 

 

Dowel Pin 

 

46 

Inboard Cover 

 

16  Case Bolts  

 

47 

Bearing Retainer Bolts 

 

Stop Pin 

XX 

48 

Seal Seat Adapter 

 

7 1 

Dyna 

Seal 

X  49 1 Ball 

Bearing 

Housing Retaining Ring 

XX 

63 

Power Rotor 

XX 

Inlet O-Ring 

66 

90° Elbow   

 

  

 

  67 

Pipe 

Plug 

 

21 2 Suction 

Idler 

XX  68 1  Nipple 

 

 

22 

Idler Stop 

XX 

69 

Tube Fitting  

 

23 

2  Thrust Cups 

 XX 

70 

90° tube to MNPT fitting 

 

24 

Discharge Housing 

XX 

71 

Seal Pipe 

 

25 1 Seal 

X  73 1  Suction 

Housing 

XX 

26 

Tube  

XX 

79 

Floating BP Bushing 

XX 

27 

Tube O-Ring 

80 

Seal Seat Adapter O-Ring 

28 2 Housing 

O-Ring 

X  81 1  Cap Screw 

 

29 1 Thrust 

Cage 

XX  91 16 Hardened 

Washers 

 

38 

Seal Spacer  

 

102

Orifice Plug 

 

    X = Minor Repair Kit Items. 

XX = Major Repair Kit Items. (Items marked (X) are included in Major Repair Kit). 

 

H. PUMP 

MAINTENANCE 

 

 

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 

 

Part number identifiers contained within parenthesis such as (10) refer to circled numbers shown 
on assembly drawing, Figure 4 and Table 2. 

 

H.2 TOOLS 

REQUIRED 

 

Procedures described in this manual require common mechanics hand tools, a torque wrench, dial 
indicator and suitable lifting device (such as) slings, straps, etc. 

 
H.3 DISASSEMBLY 

PROCEDURES 

 

SPECIAL NOTE: 

To service mechanical seal and ball bearings 

ONLY

 perform H.3, Steps 1, 7, 

8 and 9 and H.4, Steps 8, 9, 10 and 11 

ONLY

 

Summary of Contents for IMO 3220/523

Page 1: ...er BOM 3220 523 WARNING This manual and the General Installation Operation Maintenance and Troubleshooting Manual SRM00046 should be read in their entirety prior to installing operating or servicing t...

Page 2: ...fect safety for persons Safety instructions where electrical safety is involved are identified by Safety instructions which shall be considered for reasons of safe operation of the pump and or protect...

Page 3: ...n 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 plan...

Page 4: ...Pump regarding K12DHZ 312P pumps refer to pump nameplate this service manual and assembly drawing as instructed below 1 From pump nameplate record the pump model number serial number and manufactured...

Page 5: ...MINIMUM MAXIMUM LIQUID TEMPERATURE 0 to 275 F 18 to 135 C MAXIMUM INLET PRESSURE 150 psig MAXIMUM DISCHARGE PRESSURE 2200 psig Continuous Duty FILTRATION See General Instruction Manual SRM00046 DRIVE...

Page 6: ...D NO 242 OR EQUIVALENT THREADLOCKER PRODUCT NO 271 INSTALL CAP SCREW WITH LOCTITE 3 4 HARDENED CIRCULAR WASHER 3 4 REGULAR SPRING LOCKWASHER DETAIL A PP002DA 12 PP002ABH 12 MIN ENGAGEMENT 75 19 1 1 SE...

Page 7: ...cer 102 1 Orifice Plug X Minor Repair Kit Items XX Major Repair Kit Items Items marked X are included in Major Repair Kit H PUMP MAINTENANCE WARNING Failure to observe precautions while installing ins...

Page 8: ...ler cups 23 from suction idlers 21 6 Remove suction idlers 21 by unscrewing them from inlet end of pump Remove remaining idlers 35 from housings 73 24 by rotating power rotor 63 in a counter clockwise...

Page 9: ...d cover 46 13 Remove tube 26 from idler stop 22 14 Remove idler stop 22 from inboard cover 46 by removing bolts 81 15 Remove floating balance piston 79 from inboard cover 46 16 Remove stop pin 6 and D...

Page 10: ...on inboard cover 46 with cap screws 81 Torque cap screws to value on assembly drawing Install O ring 28 on inboard cover 46 7 Install inboard cover 46 on case 1 using bolts 4 Be sure that tube 26 line...

Page 11: ...sition disconnect seal piping 71 remove bolts 4 and rotate inlet head to desired position Install bolts 4 and torque to proper values indicated on assembly drawing Reconnect seal piping 71 20 Install...

Page 12: ...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 suf...

Page 13: ......

Page 14: ...CIRCOR 1710 Airport Road PO Box 5020 Monroe NC USA 28111 5020 Tel 1 877 853 7867 Email cc circor com Web www circorpt com 2021 CIRCOR Pumps North America LLC All rights reserved...

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