TM9-2815-202-34
(6)
(7)
(8)
(9)
(10)
(11)
(12)
Slide clamps (12) and rubber connectors (13) onto water bypass tube (14). Remove tube.
Remove clamps (12) and rubber connectors (13) from bypass tube (14).
Remove two bolts (16) and two flat washers (17). Loosen bolt (18) and remove water outlet
connection (5) by sliding upward.
Remove bolt (18), Iockwasher (19), flat washer (20), and gasket (21) from right bank cylinder
head (22). Discard Iockwasher and gasket.
Remove five bolts (23) and five Iockwashers (24) securing thermostat cover (25) to
thermostat housing (4). Remove gasket (26) and two thermostats (27). Discard gasket and
Iockwashers.
Remove two thermostat seals (28)
from thermostat cover (25). Discard
seals.
Remove bolts (29, 30, and 31), three
Iockwashers (32) flat washer (33).
bolt (34), and Iockwasher (35)
securing thermostat housing (4) to left
cylinder head (36). Remove
thermostat housing (4) and gasket
(37). Discard gasket and
Iockwashers.
b. Inspection
(1)
(2)
(3)
Immerse thermostat in container of
water and apply heat to container.
Place a thermometer in the container,
but do not allow it to touch bottom of
container.
Agitate water to maintain an even
temperature throughout the container.
When temperature reaches
approximately 167°F to 172oF, the
thermostat should begin to open. The
thermostat should be fully opened
when the water temperature reaches
approximately 187oF. Allow at least
10 minutes for thermostat to react. If
thermostats do not meet
requirements, replace thermostats.
4-17
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