MALFUNCTION, TEST OR INSPECTION, AND CORRECTIVE ACTION
TEST OR INSPECTION
8. BLUE EXHAUST SMOKE
Step 1. Check blower oil seals for leaks.
a. Remove air inlet housing.
When Inspecting a blower on a engine with engine running, keep
fingers, equipment and clothing away from moving parts of blower.
engine at low speeds only.
Protective fan screens must be installed prior to doing maintenance In
the engine compartment when engine Is running or when engine is in
ground hop mode. Contact with rotating fan can cause injury (reference
b. Operate engine, fluctuating between 650-1200 RPM and inspect blower end
plates for evidence of oil leakage past seals.
c. If leakage is detected, replace blower (Refer to Para 4-18).
Step 2. Check turbocharger for defective oil seals.
a. Remove air intake hose and tube and exhaust pipe.
b. Check for evidence of oil on compressor or turbine.
c. If oil is present, replace turbocharger assembly.
d. Install air intake hose and tube and exhaust pipe.
Step 3. Perform oil analysis for coolant in engine oil. (Refer to DA PAM 738-750)
END OF TEST