TM 5-3810-306-20
TABLE 3-1. ORGANIZATIONAL TROUBLESHOOTING (CONTD)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. EXCESSIVE VIBRATION
Step 1.
Engine not running smoothly.
a. Refer to troubleshooting logic for Rough IDLE, Warm Engine or Misfiring. If OK, do Step 2.
Step 2.
Loose or broken engine mounts.
a. Inspect engine mounts for damage. If OK, do Step 3.
b. Tighten loose attaching hardware.
c. Contact Direct Support Maintenance level to replace engine mounts if necessary.
Step 3.
Damaged engine cooling fan.
a. Inspect engine cooling fan for damage and loose attaching hardware. If OK, do Step 4.
b. Tighten loose attaching hardware.
c. Replace damage engine cooling fan. (Refer to page 7-4.)
Step 4.
Defective alternator bearing.
a. Inspect operation of alternator. If OK, do Step 5.
b. Replace alternator. (Refer to page 8-3.)
Step 5.
Defective engine drive line components.
a. Inspect drive line components.
b. Contact Direct Support Maintenance.
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