TM 5-3895-370-14&P
Table 4-4. Unit Troubleshooting Procedures - CONT.
Malfunction
Test or inspection
Corrective action
ENGINE (CONT)
16. EXCESSIVE VIBRATION (CONT).
Step 2. Check fan hub for visible damage and end play (para 4-60).
If fan hub is damaged or end play is over limit, replace fan support.
If fan hub is free from damage and end play is within limit, fault not corrected. Notify
supervisor.
17. UNUSUAL ENGINE NOISE.
Step 1. Inspect drive belt for deflection and damage (para 4-61).
If drive belt is damaged or out of deflection limits, replace drive belt.
If drive belt is not damaged or within deflection limits, go to step 2.
Step 2. Check fan hub for visible damage and end play (para 4-60).
If fan hub is damaged or end play is over limit, replace fan support.
If fan hub is free from damage and end play is within limit, go to step 3.
Step 3. Inspect water pump operation.
If water pump does not turn freely, replace water pump (para 4-58).
If water pump turns freely, go to step 4.
Step 4. Inspect air intake pipe for damage.
If pipe is damaged, replace air intake pipe (para 4-38).
If pipe is not damaged, go to step 5.
Step 5. Inspect intake manifold cover for loose or damaged hardware.
If manifold cover is loose or damaged, tighten or replace intake manifold cover (para 4-33).
If manifold cover is not loose or damaged, fault not corrected. Notify supervisor.
4-24
