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 2-27. Replace/Repair Cold Starting Aid Group. (FIG. 2-24)
This task covers:
a. Removal
b.
Repair
c.
Replacement
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's rail
Engine shutdown, electrical power to
and marine diesel engine
engine coolant heater OFF at switch
and circuit breaker. TM 55-1905-223-10.
Materials/Parts
Engine coolant heater P/N 212024
Nonmetallic hose P/N 3027706
Nonmetallic hose P/N 155789
Nonmetallic hose P/N AS04030SS
Nonmetallic hose P/N AS04060SS
Pressure switch P/N 196074
REMOVAL
a. Remove supply and return hoses.
(1) Loosen eight hose clamps (2, 53, 55, 60-left bank or 16, 19, 46, 48-right bank) from associated
bank.
(2) Remove four nonmetallic hoses (1, 50, 52, 59-left blank or 17, 20, 45, 57-right bank) and two
metallic bent tubes (54 and 61-left blank or 18 and 47-right bank).
(3) Remove associated pipe-to-hose straight adapters (3, 21, 43, 51, 56, 58), hose elbows (15 and 49),
tube-to-hose tee (12) and pipe nipples (13 and 14) as required.
(4) Remove hexagon head capscrew (9), lockwasher (8), flat washer (5) and hexagon nut (4) to
remove loop clamp (6).
(5) Remove hexagon head capscrew (11) and lockwasher (10) to remove corner brace (7).
b. Remove engine coolant heater (44).
(1) Tag and disconnect electrical wiring.
2-91
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