REMOVE - TM-5-1940-277-200273

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ENGINE THERMOSTAT REPLACEMENT INSTRUCTIONS (PORT OR STARBOARD)

TM-5-1940-277-20 Boat Bridge Erection Twin Jet Aluminum Hull MODEL USCSBMK1 (1940-01-105-5728) MODEL USCSBMK2 (1940-01-218-9165) Manual

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TM 5-1940-277-20

TM 1940-20/2

CAUTION

Do not replace thermostat housing without replacing thermostat

element.

Using wrench remove four bolts (8) and washers (9) from thermostat inlet housing (10). On MK2,

remove thermostat mounting bracket (7) from inlet housing.

Remove thermostat inlet housing (10), gasket (14), thermostat element (11) and O-ring (12) from

outlet housing (13).

Pull O-ring (12), thermostat element (11) and gasket (14) from inlet housing (10) and discard.

NOTE

Step ten through fifteen apply to MK2 w/Cummins.

10.

Disconnect battery ground cable (refer to paragraph 3-90).

11.

Remove drivebelt (refer to paragraph 3-119.1).

12.

Remove alternator (refer to paragraph 3-92.1).

13.

Drain engine cooling system (refer to paragraph 3-69.1).

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