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 TM 55-1905-223-24-1
(1) Remove oil pan and adapter group (para. 2-36).
(2) Ensure coolant is at proper level.
(3) Remove and plug expansion tank overflow tube (3, FIG. 2-7a).
CAUTION
Do not apply more than 20 psi air pressure. Over-pressure could cause damage to the cooling system.
(4) Install pressure manometer (1) in the fill neck (4) of the expansion tank (2).
(5) Apply 20 psi maximum air pressure to the tester.
(6) Inspect engine thoroughly for coolant leaks.
(7) Remove pressure manometer (1).
(8) Install overflow tube (3) and pressure cap in expansion tank.
ADJUST
The adjustment to the main engine is done to the injectors and valves upon replacement of rocker levers (refer
to para. 2-30).
REPAIR
Engine repair consists of individual component and assembly replacement and repair. The replacement and
repair procedures are provided in the remainder of this manual.
FIGURE 2-7a. Pressure Test Cooling System.
2-36
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