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 TM 55-1905-223-24-1
b.
Check the mating surfaces of the thermostat housing that come in contact with gaskets for corrosion,
nicks, dents, or other physical defects severe enough to cause a leak. Repair or replace as required.
c.
Check all passages and orifices in the thermostat housing and support for lc anliness. Clean as
e
required.
d.
Inspect the water transfer tubes (right and left bank) for evidence of physical damage or corrosion.
Clean or replace as required.
REPAIR
Repair consists of replacement of defective parts.
REPLACEMENT
a. To replace the thermostat housing support, perform the following steps.
WARNING
The thermostat housing support is heavy. Attach a lifting device to prevent
personnel injury or equipment damage.
(1)
Position thermostat housing support (44, FIGURE 2- 2) to the engine block.
(2)
Install six lockwashers (45) and hexagon head capscrews (46). Tighten the capscrews to 270
ft-lb (365 N-m).
(3)
Install pipe plugs (43 and 48) in both sides of thermostat housing support (44).
b.
To replace the water inlet transfer tube assembly, perform the following steps.
NOTE
Do not reuse the internal preformed packings in the inlet transfer water tubes.
(1)
Lubricate new preformed packings with clean engine lube oil before installing.
(2)
Position two preformed packings (28 and 30, FIGURE 2-12) on last portion of water inlet
transfer tube (29). Install tube (29).
(3)
Position gasket (33) on water connection (27) and install water connection. Secure water
connection (27) with lockwashers (32) and hexagon head capscrews (31). Tighten capscrews
to 30 ft-lb (40 N-m).
2-56
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