TM 5-3805-280-24-2
Air Intake and Exhaust System
30
TURBINE HOUSING OUTLET
7
DEFECTS
Problem
Possible Cause
Suggested Remedy
Turbine Wheel Rub
Bearing failure.
Determine if engine and/or operator contributed to lack of
lubrication, contaminated lubrication, excessive
temperature, or debris generating engine failure in
progress. Correct as required.
Manufacturing defect.
Correct as required (this group).
Foreign Object Damage
Internal engine failure.
Inspect and repair engine as required
Objects left in intake system.
Disassemble and inspect air intake system, (this group).
Leaking air intake system.
Correct as required, (this group).
Oil and/or Excessive Carbon
Internal engine failure.
Verified by oil in turbine housing.Correct as required.
Turbine seal failure.
Inspect for excessive heat from overfueling and/or
restricted air intake.
Prolonged periods of low RPM engine
Verify with operator to run engine underload or at a higher
idling.
RPM. (Operator's Manual.)
Restricted oil drain line.
Inspect and clear oil drain line as required.
EXTERNAL CENTER HOUSING AND
JOINT DEFECTS
Problem
Possible Cause
Suggested Remedy
Leaks from Casting
Defective casting.
Replace turbocharger, (this group).
Defective gasket.
Verify that leaks are not occurring at gasket joints.
Leaks from Joints
Loose attaching screws.
Tighten to specifications in CTM, (this group).
Defective gasket.
Inspect and repair as required.
INTERNAL CENTER HOUSING
DEFECTS
Problem
Possible Cause
Suggested Remedy
Excessive Carbon Build up in Housing
Hot engine shut-down.
Review proper operation with operator as shown in
or on Shaft
operator's manual.
Excessive operating temperature.
Restricted air intake; Overfueling or mistimed engine.
Restricted oil drain line.
Inspect and clean oil drain lines as
required.
Operating engine at high speeds and
Idle engine for a few minutes to allow oil to reach bearings
loads immediately after start-up.
before applying heavy loads.
RG,30,JW7581
1920NOV972/2
13-363
