INSPECT AND REPAIR AFTERCOOLER
1. Inspect aftercooler for overall condition. The fins should
be reasonably straight, and cross straps should be free
2. Inspect aftercooler inlet and outlet hoses. Replace
either hose if cracked or damaged.
3. Test the aftercooler for leaks by plugging one of the
4. Apply compressed air (B) to the other tube while unit is
submerged under water. Use 140--170 kPa (1.4--1.7
bar) (20-25 psi) air pressure for testing.
Testing Aftercooler Core for Leaks
IMPORTANT: Coolant leakage from the aftercooler
may cause severe engine damage.
A minor leak that is accessible may be repaired. However,
if the condition of the core is questionable, replace the