TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
Page 119 of 670
TM9-2815-202-34 (6) (7) (8) (9) (10) (11) (12) Slide clamps (12) and rubber connectors (13) onto water bypass tube (14). Remove tube. Remove clamps (12) and rubber connectors (13) from bypass tube (14). Remove two bolts (16) and two flat washers (17). Loosen bolt (18) and remove water outlet connection (5) by sliding upward. Remove bolt (18), Iockwasher (19), flat washer (20), and gasket (21) from right bank cylinder head (22). Discard Iockwasher and gasket. Remove five bolts (23) and five Iockwashers (24) securing thermostat cover (25) to thermostat housing (4). Remove gasket (26) and two thermostats (27). Discard gasket and Iockwashers. Remove two thermostat seals (28) from thermostat cover (25). Discard seals. Remove bolts (29, 30, and 31), three Iockwashers (32) flat washer (33). bolt (34), and Iockwasher (35) securing thermostat housing (4) to left cylinder head (36). Remove thermostat housing (4) and gasket (37). Discard gasket and Iockwashers. b. Inspection (1) (2) (3) Immerse thermostat in container of water and apply heat to container. Place a thermometer in the container, but do not allow it to touch bottom of container. Agitate water to maintain an even temperature throughout the container. When temperature reaches approximately 167°F to 172 o F, the thermostat should begin to open. The thermostat should be fully opened when the water temperature reaches approximately 187 o F. Allow at least 10 minutes for thermostat to react. If thermostats do not meet requirements, replace thermostats. 4-17