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 TM 55-1905-223-24-1
h. Remove and discard preformed packing (5).
i.
Remove four machine bolts (20) and lockwashers (19).
j.
Remove four hexagon head capscrews (3) and lockwashers (2).
k.
Remove engine cooling system pump (4) by pulling straight away from the drive.
NOTE
Pump spline coupling (24) may come out with pump.
l.
Remove and discard water pump gasket (1).
m. Remove water pump adapter plate (18).
n. Remove and discard water pump adapter gasket (17) and preformed packing (23).
REPAIR
Repair of the water pump group consists of replacement of defective parts. Repair of the engine cooling
system pump is covered by intermediate direct support maintenance procedures (Chapter 3).
REPLACEMENT
a. Lubricate preformed packing (23) with clean engine lube oil. Install preformed packing (23) in the
water pump adapter plate (18) groove.
b. Install water pump adapter plate (18) on engine system cooling pump (4) with grooved side of plate
nearest to the pump.
NOTE
If the spline coupling (24) came out when the engine system
cooling pump (4) was removed, install spline coupling on pump
shaft before installing water pump gasket (1).
c.
Install water pump gasket (1) on engine system cooling pump (4).
WARNING
The engine cooling system pump is very heavy. To avoid
personal injury, two soldiers are required to lift the engine
cooling system pump.
d. Position engine cooling system pump (4). Rotate the pump to align the spline coupling (24) with the
splines on the engine cooling system pump drive shaft. Install four lockwashers (2) and hexagon head
capscrews (3). Tighten capscrews only enough to hold the parts together.
2-80
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