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 TM 55-1905-223-24-1
2-17. Replace/Repair Thermostat Housing/Water Transfer Tube Group.
This task covers:
a. Removal
b. Inspection
c. Repair
d. Replacement
INITIAL SETUP :
Tool
Equipment Condition
Thermostat seal mandrel P/N 3375411
Engine shutdown and cooled to 120
F
Tool kit, general mechanic's
(50 ). TM 55-1905-223-10.
C
rail and marine diesel engine
Water filter heads removed (paragraph
2-16).
Torque wrench kit P/N 3377216
Guards supporting water lines removed.
Water tube driver P/N ST-1319
Lifting sling P/N 3375958
Materials/Parts
Thermostat P/N 3022299
Gasket P/N 206460, 207515, 206443,
206556
Preformed packing P/N 3042759, 70861,
3028291, 3008710
Coolant, Item 3, Appendix C
Thermometer, Item 13, Appendix C
REMOVAL
a.
Drain cooling system to a level just below the thermostat housing coolant inlet (TM 55-1905-223-10).
b.
Remove clamp (10, FIG. 2-11) retaining the coolant nonmetallic outlet hose (9) to thermostat housing
(17). Remove clamp (8) to water transfer connection piping (7). Remove the outlet nonmetallic hose
(9).
c.
To remove the thermostat only, perform the following steps.
(1)
Remove six hexagon head capscrews (15, FIG. 2-11) and lockwashers (14) retaining
thermostat housing (17) to housing support (18).
(2)
Remove thermostat housing (17) and thermostat housing gasket (11). Discard gasket.
(3)
Remove thermostat (12) and thermostat seal (13). Discard seal.
(4)
Remove pipe plug (16).
Change 1
2-50
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