TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 663 of 1275

TM 9-2350-311 -20-1

8-7 ENGINE COOLANT HIGH TEMPERATURE SWITCH AND PROTECTIVE COVER —

CONTINUED

a. Removal — Continued

2 Remove two screws (5) and two lockwashers (6)

3 Disconnect electrical connector (8) of wire 509A.

and lift protective cover (7) off. Discard lockwashers.

WARNING

Coolant is hazardous waste and must be disposed of in accordance with local

procedures or direction of the local Hazardous Waste Management office.

NOTE

Coolant will drain through opening when transmitter is removed. Install replacement

transmitter immediately.

4 Unscrew and remove engine coolant temperature switch (9).

8-18