Thermostat and Housing (cont) - TM-10-3930-638-24-P0123

TM 10-3930-638-24&P

2-17. COOLING SYSTEM MAINTENANCE (cont)

d. Thermostat and Housing (cont).

STEP

LOCATION

ACTION

ITEM

REMARKS

REMOVAL

a. Two cap screws

Engine com-

Remove

(1) and lock

partment

washers (2)

b. Housing (3)

Remove

c. Gasket (4)

Remove and

discard

d. Thermostat

Lift out

(5)

and remove

CLEANING

WARNING

Dry cleaning solvent (P-D-680), used to clean parts is toxic and

flammable. Wear protective goggles and gloves and use only in a

well ventilated area. Avoid contact with skin, eyes, and clothes

and don't breathe vapors. Do not use near open flame or exces-

sive heat and don't smoke when using it. Failure to do so could

cause serious injury. If you become dizzy while using cleaning

solvent, get fresh air immediately, and get medical attention. If

contact with skin or clothes is made, flush with large amounts of

water. If contact with eyes is made, wash eyes with water immed-

iately, and obtain medical aid immediately.

WARNING

Wear safety glasses when drying parts with compressed air. Failure

to do so could cause serious injury to eyes and possible blindness.

If you hurt your eyes or if a foreign object is blown into your eyes,

seek medical attention immediately.

Use cleaning solvent P-D-680. Dry thor-

All parts

Clean

oughly with compressed air. Remove

all gasket material from housing and

water pump mating surfaces

INSPECTION

All parts

Replace if cracked, damaged, or damaged

Inspect

threads

TESTING

Thermostat (5)

Submerge in hot (175) water with ther-

Test

mometer. Heat water. Thermostat

shall just start to open between 175-

182 degrees F and be completely open

at 202 degrees F. Remove and dry

with compressed air. Replace

thermostat if it does not meet

specification

2-87