Air Intake and Exhaust System
02
080
25
RG,RG34710,252 –19–13AUG99–1/1
Inspect and Repair Aftercooler (6105A and
6125A Engines)
RG8446 –UN–09DEC97
Aftercooler Assembly
A—Inlet Tube
B—Outlet Tube
1. Inspect aftercooler for overall condition. The fins should
be reasonably straight, and cross straps should be free
of cracks.
2. Inspect aftercooler inlet and outlet hoses. Replace
either hose if cracked or damaged.
3. Test the aftercooler for leaks by plugging outlet tube
(B).
4. Apply compressed air to the inlet tube (A) while unit is
submerged under water. Use specified air pressure for
testing.
Specification
Aftercooler—Test Pressure 140—170 kPa (1.4—1.7 bar)
(20—25 psi)
..........................
A minor leak that is accessible may be repaired.
However, if the condition of the core is questionable,
replace aftercooler.
IMPORTANT: Coolant leakage from the aftercooler
may cause severe engine damage.
5. Inspect air intake cover for cracks or damage. Replace
as necessary.
CTM100 (06APR04)
02-080-25
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=325