TM 5-3805-281-24-1
Diagnostic Information
Symptom
Problem
Solution
Piston scored
Replace piston. See Engine Repair
chapter.
Piston pin bushings worn
Replace pins and bushings. See
Engine Repair chapter.
Rocker arm shafts worn
Check. See Engine Repair chapter.
Crankshaft end play excessive
Check, repair. See Engine Repair
9010
15
chapter.
11
Turbocharger Excessively Noisy
Bearings not lubricated
Insufficient oil pressure. Check for
or Vibrates
restricted turbocharger oil line.
Worn bearings
Replace. See Engine Repair
chapter.
Air leak in engine, intake or exhaust
Inspect and repair. See Engine
manifold
Repair chapter.
Improper clearance between turbine
Remove exhaust elbow and air inlet
wheel and turbine housing
hose. Inspect and repair. See
Engine Repair chapter.
Broken blades on turbine
Remove exhaust elbow and air inlet
hose. Inspect and repair. See
Engine Repair chapter.
Oil Dripping From Turbocharger
Damaged or worn bearings and/or
Inspect compressor and turbine
Adapter
worn seals
wheel for damaged blades. Check
for proper engine service intervals or
dirt entering engine. See Engine
Repair chapter.
Excessive crankcase pressure
Check for plugged oil drain line.
Clean.
Turbocharger oil return line carbon
Remove line. Inspect and clean.
buildup where line passes exhaust
manifold.
Excessive Drag In Turbocharger
Carbon build-up behind turbine
Inspect and clean. See Engine
Rotating Members
wheel caused by combustion
Repair chapter.
deposits
Continued on next page
CED,TX14795,4357
1917APR9811/12
3-39
