TM-9-2320-361-34

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

MAY 1992

TM-9-2320-361-34 - Page 651 of 764

TM 9-2320-361-34

17-4. ENGINE COOLANT HEATER RESTRICTION THERMOSTAT MAINTENANCE

THIS TASK COVERS:

a. Removal

c. Installation

b. Inspection

INITIAL SETUP

APPLICABLE MODELS

REFERENCES (TM)

All

TM 9-2320-361-34P

TEST EQUIPMENT

EQUIPMENT CONDITION

Multimeter (Appendix B, Item 3)

Engine coolant heater blower motor removed

(para. 17-3).

TOOLS

General mechanic’s tool kit

(Appendix B, Item 1)

Tool kit, electrical (Appendix B, Item 2)

a. Removal

NOTE

Tag wires for installation.

1. Disconnect

two leads (1) from restriction thermostat (3).

2.

Remove two nut-assembled lockwashers (2), restriction thermostat (3), and two spacers (4) from two

studs (5).

b. Inspection

1. Inspect restriction thermostat (3) for corrosion and bends. Replace if corroded or bent.

2.

Check thermostat continuity at room temperature. If continuity exists, replace thermostat (3).

CAUTION

Do not place thermostat m liquid for cooling. Placing thermostat

in liquid will cause damage to equipment.

3.

Cool thermostat to 20F (-6.7°C). Check thermostat continuity. If continuity does not exist, replace

thermostat.

I

c. Installation

1. Install restriction thermostat (3) and two spacers (4) on two studs (5) with two nut-assembled

lockwashers (2).

2. Connect two leads (1) to restriction thermostat (3).

17-8