Section XXIV. Repair of Thermostat Assembly

*TM 9-2815-213-34

clearance between impeller vanes and pump body.

NOTE

3-1 24. Installation

Driving flange of seal case must seat

properly on edge of bore in pump body.

Position water pump and new gasket to cylinder block

j. Support pump on pulley end of shaft.

and secure with five cap screws and lock. washers.

Pr on impeller and maintain 0.010/0.020

inch

Section XXIII. Repair of Fan Drive Pulley, Vibration Damper,

and Water Pump Pulley Assembly

3-125. Disassembly

3-130. Installation

Using a soft hammer or brass driver, remove vibration

a. Loosen adjustable sheave on water pump and

damper from water pump drive pulley hub.

set crankshaft-to-pump drive belt in pulley.

b. Set water pump drive belt on drive pulley. c.

3-126. Cleaning

Position pulley and damper assembly on crankshaft

Refer to paragraph 2-5 for cleaning procedure

flange.

d. Position three sheave fan drive pulley to vibration

3-127. Inspection

damper and secure to crankshaft with seven cap screws

Refer to paragraph 26 for inspection procedure

and lockwashers.

3-128. Repair

e. Tighten water pump pulley adjustable sheave to

Repair of the assembly is limited to the procedures of

obtain required belt tension.

paragraph 27.

3-129. Assembly

Press vibration damper onto water pump pulley hub.

Insure that cap screw holes are aligned.

Section XXIV. Repair of Thermostat Assembly

3-131. Disassembly

(3) Compare

thermostat

operation

with

(fig. B-21).

temperature indicated on thermometer.

a. Remove two cap screws (16) lockwasher and

c. The high range thermostats installed on the V8-

flat washer (15) securing thermostat cover (14) to

300 engine start to open at 173 degrees Fahrenheit and

housing (7).

are fully open at 186 degrees Fahrenheit.

b. Remove thermostat (12) and gasket (13) c.

d. Discard thermostats not operating in correct

Remove pipe plugs (10) and temperature transmitter

range. Replace with same range thermostat.

(11).

e. Inspect thermostat for physical damage. If

d. Loosen hose clamp and remove hose.

damaged, replace thermostat.

3-132. Cleaning

3-134. Repair

Refer to paragraph 2-5 for cleaning procedure:

Refer to paragraph 2-7 for general repair procedures.

3-133. Inspection

3-135. Assembly

a. Perform general inspection in accordance with

Refer to paragraph 3-131 and reverse procedures.

paragraph 26.

b. Check thermostat as follows:

3-136. Installation

(1) Immerse thermostat and thermometer in

a. Position thermostat housing with new gasket to

water.

cylinder head and secure with four cap- screws and

lockwashers.

NOTE

b. Position hose on water pump and tighten hose

Season

thermostat

operating

clamps.

thermostat for a period of 45 minutes at

200 degrees Fahrenheit.

(2) Cool water to the initial operating

temperature,

173

degrees

Fahrenheit

of the

thermostat.

3-54