TM 5-3805-281-24-2
Air Intake and Exhaust System
Problem
Possible Cause
Suggested Remedy
COMPRESSOR HOUSING INLET DEFECTS
Foreign Object Damage
Objects left in intake system.
Disassemble and inspect intake system for foreign
objects (this group).
Inspect engine for internal damage.
Leaking and/or defective intake system.
Inspect air intake system connections including air
filter; repair as required (this group).
Inspect air intake related engine components.
Compressor 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 defects.
Correct as required.
COMPRESSOR HOUSING OUTLET DEFECTS
Oil and/or Dirt in Housing
Restricted air intake system.
Inspect and clean air cleaner.
Prolonged periods of low rpm engine
Check with operator to confirm conditions. (See
idling.
Operator's Manual.)
Defective oil seal ring.
Repair as required (this group).
Restricted oil drain line.
Inspect and clear oil drain line as required.
TURBINE HOUSING INLET DEFECTS
Oil in Housing
Internal engine failure.
Inspect and repair engine as required.
Oil leaking from compressor housing
Verify that oil is in compressor housing and refer to
seal.
"Compressor Housing Outlet Defects" as listed earlier
in this chart.
Center Wall Deteriorated
Excessive operating temperature.
Check for restricted air intake.
Check engine for overfueling.
Check injection pump timing.
TURBINE HOUSING OUTLET DEFECTS
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).
Continued on next page
RG,RG34710,1258
1923OCT972/3
11-327
