TM-9-2990-205-34-P
TURBOSUPERCHARGER MODEL 5HDR
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 2005
TM-9-2990-205-34-P - Page 29 of 128
TM 9--2990--205--34&P
TROUBLESHOOTING INSTRUCTIONS -- CONTINUED
0005 00
TABLE 2--1. TROUBLESHOOTING
MALFUNCTION
PROBABLE CAUSE(S)
CORRECTIVE ACTION
1. Compressor wheel or turbine
wheel does not turn freely when
spun by hand.
a. Dirt build up behind
compressor wheel, or dirt or
carbon build--up behind
turbine wheel.
Disassemble and clean turbo. Refer
to WP 0008 00--1.
b. Foreign object damage, worn
bearings or thrust surfaces,
or damaged compressor
wheel or turbine wheel.
Disassemble turbo and replace worn
or damaged parts. Refer to WP
0008 00--1.
2. Evidence of compressor wheel
rubbing.
Worn or damaged bearings or thrust
rings, worn bore in bearing housing;
worn or bent shaft, or bent or
damaged compressor wheel.
Disassemble the turbo and replace
worn or damaged parts. Refer to WP
0008 00--1.
3. Evidence of turbine wheel
rubbing.
Worn sleeve bearing, or bent or
damaged turbine wheel, or worn bore
in bearing housing; worn or bent
shaft.
Disassemble the turbo and replace
worn or damaged parts. Refer to WP
0008 00--1.
4. Excessive radial movement.
Refer to WP 0005 00--1.
Worn sleeve bearings, or worn shaft
and turbine wheel assembly, or worn
bore in bearing housing.
Disassemble the turbo and replace
worn or damaged parts. Refer to WP
0008 00--1.
5. Excessive oil leaking into
compressor housing from
bearing housing.
Flinger sleeve metal seal ring worn or
broken.
Disassemble the turbo and replace
flinger sleeve metal seal ring. Refer
to WP 0008 00--1.
6. Excessive oil leaking into the
turbine from the bearing housing.
Turbine wheel and shaft assembly
metal seal ring worn or broken.
Disassemble the turbo and replace
metal seal ring. Refer to WP
0008 00--1.
7. End play greater than 0.006 inch. Worn thrust surfaces on thrust
bearing and thrust rings.
Disassemble the turbo and replace
worn or damaged parts. Refer to WP
0008 00--1.
8. End play less than 0.004 inch.
Dirt build--up behind turbine wheel or
dirt build--up behind compressor
wheel.
Disassemble and clean turbo. Refer
to WP 0008 00--1.
9. Turbo makes excessive noise.
Dirt build--up between bearings and
housing.
Disassemble and clean turbo.
Replace worn or damaged bearings.
Refer to WP 0008 00--1.
END OF WORK PACKAGE
0005 00--3/4 blank
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