TM 5-3805-254-20-1
THERMOSTAT - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REMOVAL
1.
Thermostat
Hose clamps (2) and
a.
Using 1/4-inch flat-tip screwdriver,
housing (1)
radiator hose (3)
loosen hose clamps.
b.
Take off radiator hose.
2.
Radiator (4)
Hose clamps (5) and
a.
Using 1/4-inch flat-tip screwdriver,
radiator hose (6)
loosen hose clamps.
b.
Take off radiator hose.
3.
Torque converter
Thermostat housing
a.
Using 9/16-inch, 1/2-inch drive socket
cooler (7)
(1), five screws (8),
6-inch extension, and ratchet handle,
and lockwashers (9)
unscrew and take out screws.
b.
Get rid of lockwashers.
c.
Take off thermostat housing.
4.
Thermostat
Temperature valve
a.
Take out temperature valve.
housing (1)
(10) and gasket (11)
b.
Using gasket scraper, take off gasket.
Do not scratch or gouge machined
surface.
c.
Get rid of gasket.
TESTING
5.
Temperature
a.
Suspend in 1/2-gallon metal container
valve (10)
filled with cold water with thermometer.
Be sure not to allow temperature valve
or thermometer to touch sides or bottom
of 112-gallon metal container.
b.
Heat water, using suitable source, while
noting temperature when thermostat
begins to open.
A good thermostat will begin to open
between 165° and 168°F (73.9° and
75.6°C).
c.
Note temperature when thermostat is
fully open.
A good thermostat will be fully open
between 180° and 183°F (82.2° and
83.9°C).
d.
Replace thermostat if defective.
INSTALLATION
6.
Thermostat
Temperature valve
a.
Put in temperature valve.
housing (1)
(10) and new
b.
Put silicone sealer on thermostat
gasket (11)
housing.
c.
Put new gasket in place.
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