Cleaning - TM-55-1930-208-240145

TM 55-1930-208-24

3-28. THERMOSTAT AND HOUSING - Continued.

b. Cleaning - Continued.

WARNING

Do not breathe cleaning solvent P-D-680 vapors for long periods of time or use solvent near open flames.

To avoid illness, explosion, or fire, only use solvent in well-ventilated areas away from open flames.

(2) Clean all parts using a soft cloth (item 23, Appendix C) and cleaning solvent (item 4, Appendix C).

(3) Allow to dry.

c. Inspection.

(1) Inspect for damaged or missing hardware.

(2) Inspect thermostat housing for cracks, deformed mating surfaces, rust, or corrosion.

d. Test. Check thermostat operation as follows:

(1) Put the thermostat in a container of water.

(2) Place a thermometer in the water. Do not allow the thermometer to touch the bottom or sides of the container.

(3) While slowly agitating the water to maintain an even temperature, apply heat to the water.

(4) The thermostat should be fully open at approximately 185-1950F (85-91 ). Allow at least 10 minutes for the

thermostat to react.

(5) Upon completion of the check, remove the thermostat from the water and turn off the heat.

e. Installation.

(1) Refer to figure 3-62 and install drain cock (11) and plugs (10) in tube assembly (9).

(2) Position a new gasket (12) on water manifold. Install tube assembly (9), clamp (8), and screw (7).

(3) Tighten oil cooler upper hose clamp.

(4) Install drain cock (5) in elbow (3).

(5) Position a new gasket (4) on tube assembly (9).

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