TM 5-3810-306-34
TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Malfunction
Test or Inspection
Corrective Action
17. EXCESSIVE VIBRATION
Step 1.
Defective vibration bearing.
a. Inspect vibration damper. If OK, do Step 2.
b. Replace defective vibration damper. (Refer to
Step 2.
Flywheel misaligned.
a. Disassemble engine and using a dial indicator, check
concentricity of flywheel housing to crankshaft.
If OK, do Step 3.
b. Replace flywheel. (Refer to page 4-32.)
Step 3.
Loose or broken power component.
a. Disassemble engine and inspect crankshaft and rods for
damage that cause unbalance.
b. Replace defective engine components.
3-17
