TM 55-2815-574-24
FIELD MAINTENANCE
ENGINE
FRESH WATER COOLING SYSTEM PORT THERMOSTAT HOUSING REPLACEMENT
INITIAL SETUP:
Tools and Special Tools
Equipment Condition (cont.)
General mechanic's tool kit
Powered section operator`s cab removed
(WP 0179, Table 1, Item 130)
(TM 55-1925-205-23)
Chemical gloves (WP 0179, Table 1, Item 52)
Powered section intake plenum assembly
Industrial goggles (WP 0179, Table 1, Item 54)
removed (TM 55-1925-205-23)
Powered section exhaust plenum removed
(TM 55-1925-205-23)
Materials/Parts
Engine deck hatch removed
Antiseizing tape (WP 0178, Table 1, Item 37)
(TM 55-1925-205-23)
Gasket (WP 0180, Table 1, Item 49)
Fresh water cooling system drained
Lockwasher Qty: 3 (WP 0180, Table 1, Item 3)
(TM 55-1925-205-10)
Sealing compound (ultra-blue)
Fresh water cooling system bypass tube removed
(WP 0178, Table 1, Item 32)
Auto shutdown system high water temperature
switch removed (WP 0171)
Personnel Required
Fresh water cooling system thermostat removed
Engineer 88L
Fuel system block removed (WP 0085)
Equipment Condition
Cold start temperature switch removed
Engine cool to touch
Single channel ground and airborne radio system
Auto shutdown system fuel oil pressure switch
(SINCGARS) antenna removed
removed (WP 0173)
(TM 11-5820-890-10-8)
Main navigation mast removed
(TM 55-1925-205-23)
REMOVAL
1.
Remove bushing (Figure 1, Item 5) from thermostat housing (Figure 1, Item 4).
2.
Remove two capscrews (Figure 1, Item 8), lockwashers (Figure 1, Item 1), and one flat washer
(Figure 1, Item 9) securing thermostat housing (Figure 1, Item 4) to cylinder head (Figure 1, Item 3).
3.
Remove capscrew (Figure 1, Item 7) and lockwasher (Figure 1, Item 6) securing thermostat housing
(Figure 1, Item 4) to cylinder head (Figure 1, Item 3).
4.
Remove thermostat housing (Figure 1, Item 4) from cylinder head (Figure 1, Item 3) and discard.
5.
Remove gasket (Figure 1, Item 2) from cylinder head (Figure 1, Item 3) and discard.
END OF TASK
0141-1