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 TM 55-1905-223-24-1
(3)
Submerge core in a container of water.
(4)
Apply 65 psi (448 kPa) of air pressure to the core.
(5)
Check for bubbles in the water. Bubbles indicate a leak in the core.
(6)
Replace core if leaks are found.
b. Repair of the air intake manifold group consists of replacement of defective parts.
REPLACEMENT
a. Replace aftercooler.
(1)
Position mounting spacers (45, FIG. 2-52) and aftercooler brackets (43). Install eight lockwashers
(53) and hexagon head capscrews (54). Tighten to 70 ft-lb (95 N m).
(2)
Position aftercooler housing (6) on aftercooler brackets (43). Install eight assembled washer screws
(44). Tighten to 45 ft-lb (60 N m).
(3)
Install aftercooler gasket (7), radiator core (8), aftercooler gasket (9) and aftercooler housing cover
(10).
(4)
Install 18 flat washers (37), lockwashers (33) and hexagon head capscrews (34) in each aftercooler
,
housing cover (10). Tighten capscrews to 20 ft- lb (25 N m).
CAUTION
The adapter connection (4) must be installed so that the water leakage hole is
toward the bottom of the aftercooler housing. This prevents water from
entering the aftercooler housing.
Ensure that the correct seal (2) is installed for the water connection (1). A
rectangular seal is used with the connection that does not have a step at the
end of the chamber. An O-ring seal is used with the connection that has a step
at the end of the chamber. Using the wrong seal can cause a leak.
(5)
Install preformed packing (5), adapter connection (4), preformed packings (2 and 3) and water
outlet connection (1).
(6)
Install four lockwashers (70) and hexagon head capscrews (69). Tighten to 20 ft-lb (25 Nm).
(7)
Position gasket (46) and air crossover connection (47). Install flat washers (52) and hexagon head
capscrews (51). Tighten to 20 ft-lb (25 N m).
2-125
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