TM 5-2420-230-24-2
Troubleshooting Symptoms Charts
B3.9 and B5.9 Series Engines
Page TS-36
Section TS - Troubleshooting Symptoms
Engine Noise Excessive (Continued)
Cause
Correction
Check the flywheel or flexplate and the
Flywheel or flexplate capscrews are loose or
.......
mounting capscrews. Refer to Procedure
broken
016-005.
OK
T
Check the torque converter. Refer to the OEM
orque converter is loose
.......
service manual.
OK
M
ain bearing or connecting rod bearing noise
.......
Refer to Procedure 001-005 and 001-006.
OK
P
Check for air intake system leaks. Refer to
Procedure 010024. Check the pistons and
iston or piston rings are worn, or damaged
.......
piston rings for wear or damage. Refer to
Procedure 001-043 and 001-047.
L-620
