11
10. Install assembled power rotor (63) in pump, centering all parts as they enter inboard cover (46).
Align one of openings in spacer (48) over drain in inboard cover (46).
11. Install bearing retainer (43) on inboard cover (46) using bolts (47). Torque bolts to values
indicated on assembly drawing.
12. Install idlers (35, 21) into housings by meshing threads with power rotor thread and screwing
them into housing idler bores.
13. Install idler balance piston housings (23) to ends of suction idlers (21).
14. Install O-rings (27) on oil balance tube (26) and oil balance tube (26) in inlet housing (73).
15. Install thrust cage (29) to pump case (1), ensuring that pin hole in thrust cage (29) engages tube
(26) in suction housing (73).
16. Install retaining rings (8) to pump case (1).
17. Install O-ring (9) to groove in inlet head (2).
18. Install inlet head (2) using bolts (4). Torque bolts to values indicated on assembly drawing.
19. Install seal piping (71) and drain plug (67).
Note:
Inlet head (2) can be rotated and repositioned in 90° increments to suit suction piping. To
change inlet position, 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 coupling hub key (31). Install and align pump and driver as specified in General
Instruction Manual, SRM00046 or if CE compliance is required, see “CE - Installation,
Maintenance & Troubleshooting Manual“, SRM00101.
.5 SPECIAL TESTING INSTRUCTIONS
After pump has been reassembled with a major kit, it is recommended that a break-in test be
performed to allow idlers to polish into babbitted housing bores. For this test, pump should be run to
maximum required working pressure starting from 300 psig, in 200 psig increments, holding each
pressure for five minutes.
I. TROUBLESHOOTING
For assistance with troubleshooting see “General Installation, Operation, Maintenance and
Troubleshooting” Manual, SRM00046 or if CE compliance is required, see “CE - Installation, Maintenance
& Troubleshooting Manual“, SRM00101.
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 maintenance
training.
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