Step | Action | Yes | No |
|---|---|---|---|
DEFINITION: The vibration is engine-speed related. The vibration may be sensitive to accessory load. Refer to Engine Related Vibration in Vibration Diagnosis and Correction. | |||
1 | Check the drive belt for wear, damage, debris build-up and missing drive belt ribs. Is the drive belt worn or damaged? | Go to Step 2 | Go to Step 3 |
2 | Replace as necessary. Refer to Drive Belt Replacement . Is the repair complete? | System OK | Go to Step 3 |
3 | Check for loose or missing fasteners. Are there loose or missing fasteners? | Go to Step 4 | Go to Step 5 |
4 | Re-tighten or replace as necessary. Is the repair complete? | System OK | -- |
5 | Check for damaged fan blades or bent fan clutch shaft. Are there damaged fan blades or a bent fan clutch shaft? | Go to Step 6 | Go to Step 7 |
6 | Replace as necessary. Refer to Fan Clutch Replacement (Diesel) in Engine Cooling. Is the replacement complete? | System OK | -- |
7 | Check for a bent water pump shaft. Is the water pump shaft bent? | Go to Step 8 | Go to Step 9 |
8 | Replace as necessary. Refer to Water Pump Replacement (Diesel) in Engine Cooling. Is the repair complete? | System OK | -- |
9 | Check for bent or cracked brackets. Are there bent or cracked brackets? | Go to Step 10 | System OK |
10 | Replace the brackets as necessary. Is the repair complete? | System OK | -- |
