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Figure 2-18. Centrifugal pump removal and installation.
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TM-5-4320-234-34 Pump Centrifugal Self-Priming Gasoline Engine Driven Wheel Mounted 6-Inch 1500 GPM Capacity At 60 Foot Head Manual
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Figure 2-20. Bearing housing.
TM 5-4320-234-34
Table 2-1. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CENTRIFUGAL PUMP CONTINUED
b.
Disconnect all suction and discharge piping from the pump. Disconnect the suction and pressure gage piping from the pump.
c.
Place a rope sling around the pump and support the weight of the pump with a hoist or cran
e.
d.
Remove the nuts (2) and lockwashers (3) that secure the bearing housing of the pump (7) to the flywheel housing of the engine.
e.
Remove nuts (4), lockwashers (5) and capscrews (6) that secure the pump to the chassis. Operate the hoist or crane so that pump fast barely
clear the chassis frame. Pull the pump straight out to disengage the pump half of the flexible coupling from the engine half of the coupling. Be
careful not to lose the cushions that are installed between the coupling halves. Remove the pump and shims (8, 9 and 10).
f.
Remove sleeves (1, fig. 2-19) to release the cushions (2) from the coupling halves (7 and 13). Remove setscrew (3) that secures the coupling
half (7) to the impeller shaft; remove the coupling and key.
g.
Remove lockwire (4) and retaining ring (5) that secure the collar (6) to the coupling half; remove the collar.
h.
Remove capscrews (8) and lockwashers (9) that secure the drive plate (12) to the engine flywheel; remove the assembled coupling half (13)
and drive plate.
i.
Remove the capscrews (10) and lockwashers (11) that secure the coupling half (13) to the drive plate (12): remove the coupling half.
j.
Remove nuts and lockwashers that secure pump body to the hearing housing. Separate the bearing housing and pump body.
Figure 2-19. Pump coupling.
k.
Disassemble the bearing housing in the sequence indicated in figure 2-20.
2-26

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