8
WARNING
Fluid leakage from disassembly of pump may make floor slippery and cause personal injury.
1. Close suction and discharge piping to pump and disconnect piping. Remove seal piping (71).
Remove drain plugs (67), and drain unit. Remove pump from driver, coupling and base plate.
Remove coupling hub and key (31).
2. Remove bolts (4) and inlet head (2). Remove O-ring (9) from inlet head (2).
3. Remove spiral rings (8) from grooves in case (1).
4. Remove thrust cage (29), then oil balance tube (26) with O-rings (27) from either cage (29) or
inlet housing (73). Remove O-rings (27) from tube (26).
5. Remove idler 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 direction.
CAUTION
ATTENTION
Do not permit idlers (21, 35) to drop as they emerge from housings (73, 24).
7. Remove bolts (47) and bearing retainer (43) from inboard cover (46).
8. Remove assembled power rotor (63). Removal of power rotor (63) includes removal of Truarc
rings (42), ball bearing (49), seal adapter (48), spacer (38) and mechanical seal (25).
Figure 3
– Multi-Spring Seal
9. Disassemble power rotor (63) as follows (See seal insert Figure 3):
a. Using a flat nosed tool, such as a screw driver, remove Truarc rings (42) located on both
sides of ball bearing (49) from their grooves in power rotor (63).
Summary of Contents for IMO 3220/523
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