MALFUNCTION, TEST OR INSPECTION, AND CORRECTIVE ACTION
TEST OR INSPECTION
EXCESSIVE ENGINE OIL CONSUMPTION
Step 1. Check oil lines and connections for leaks.
Step 2. Clean and inspect crankcase breathers (Refer to Paragraphs 4-11, 4-15, 6-16, or
7-14 for appropriate engine model).
Step 3. Check blower oil seals for leaks.
a. Remove air inlet housing.
When Inspecting a
Run engine at iow
biower on a engine with the engine running, keep
and ciothing away from moving parts of the biower.
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 4. Check for blue smoke. Inspect exhaust manifolds and stacks for wetness or oil
If wetness or oil discharge is present in exhaust manifolds, it is usually an indication
of worn valve guides.
Low compression readings will indicate worn out cylinders.
Step 5. Check vehicle for leaks in air cleaner system which would allow contaminated air to
enter engine. Perform cylinder compression test (Refer to Para 8-14).
Step 6. Check turbocharger oil drain and supply lines for leakage.
END OF TEST