TM 9-2320-273-20
COOLING SYSTEM.
4-43. THERMOSTAT AND HOUSING MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
A. REMOVAL (Continued).
3.
4.
5.
6.
7.
Two capscrews (2), and
washers (1).
Elbow (3) and gasket (5).
Four capscrews (7) and
washers (6).
Thermostat housing (11).
Gasket (14), thermostat (13),
and rubber seal (12).
Unscrew and remove.
a. Remove.
b. Check elbow for
cracks.
Unscrew and remove.
a. Tap with soft head
hammer and remove.
b. Check housing for:
1. Cracks.
2. Damaged fittings.
3. Stains from leaks.
Remove.
Replace if necessary.
B. TESTING.
8. Thermostat (13).
a.
b.
C. INSTALLATION.
9. Thermostat (13), gasket (14),
and rubber seal (12).
10. Gasket (5), elbow (3),
washer (1), and capscrew (2).
11. Compressor coolant line (15).
Check that at room tem-
perature thermostat is
closed.
Put thermostat in hot
water. When tempera-
ture reaches 185°F (85°C)
thermostat should open.
Install rubber seal (12)
in thermostat housing (11)
using thermostat seal
mandrel.
Install thermostat (13), new
gasket (14), and secure with
four capscrews (7), and
washers (6).
Secure new gasket (5),
and elbow (3), with two
capscrews (2), and washers
(1).
Screw to fitting (8).
If thermostat does not
work, replace it.
Seal must be installed
with part number or metal
flange of seal toward
mandrel to ensure proper
sealing.
4-162
