Roughness or Vibration Propeller Shaft Visual Inspect
An unbalanced propeller shaft and universal joint assembly may be caused by one or more of the following conditions:
| • | Missing balance weights |
| • | Bent, dented, or damaged tubing |
| • | Worn slip spline (inboard type) |
| • | Foreign material on the propeller shaft tubing or the end yokes |
| • | Improperly installed propeller shaft and universal joint assembly |
- Clean all foreign material from the shaft or tube and the end yokes.
- Inspect the assembly. If necessary, remove and repair the assembly as required.
Do not replace missing balance weights or straighten a bent tube.
Roughness or Vibration Propeller Shaft Runout
Application | Specification | |
|---|---|---|
Metric | English | |
Use a dial indicator in order to inspect each shaft at several locations for excessive runout. Ensure that the readings at each location are within the limits as specified: | ||
Splined Shaft (1) | 1.30 mm | 0.005 in |
Front (2) | 3.0 mm | 0.015 in |
Center (3) | ||
| 3.0 mm | 0.015 in |
| 2.5 mm | 0.010 in |
Rear (4) | 3.0 mm | 0.015 in |
Front to Rear (5) | 75.0 mm | 3.0 in |
Roughness or Vibration Diagnosis
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Inspect the center bearing. Is the bearing worn? | -- | Go to Step 2 | Go to Step 3 |
2 | Replace the center bearing. Refer to Center Bearing Replacement . Is roughness or vibration still evident? | -- | Go to Step 3 | System OK |
3 | Inspect the hanger. Is the hanger worn? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace the hanger. Is roughness or vibration still evident? | -- | Go to Step 5 | System OK |
5 | Inspect the universal joints. Do the universal joints require lubrication? | -- | Go to Step 6 | Go to Step 7 |
6 | Lubricate the universal joints. Refer to Fluid and Lubricant Recommendations . Is roughness or vibration still evident? | -- | Go to Step 7 | System OK |
7 | Inspect the universal joints. Are the universal joints worn? | -- | Go to Step 8 | Go to Step 9 |
8 | Replace the universal joints. Refer to Universal Joint Replacement . Is roughness or vibration still evident? | -- | Go to Step 9 | System OK |
9 | Inspect the flange bolts. Are the bolts loose? | -- | Go to Step 10 | Go to Step 11 |
10 | Tighten the flange bolts to specification. Refer to Fastener Tightening Specifications . Is roughness or vibration still evident? | -- | Go to Step 11 | System OK |
11 | Inspect the tires. Are the tires worn? | -- | Go to Step 12 | Go to Step 13 |
12 | Replace the tires as necessary. Refer to Tire Mounting and Dismounting . Is roughness or vibration still evident? | -- | Go to Step 13 | System OK |
13 | Inspect the companion flange. Are there burrs or gouges on the companion flange? | -- | Go to Step 14 | Go to Step 15 |
14 |
Is roughness or vibration still evident? | -- | Go to Step 15 | System OK |
15 | Inspect the propeller shaft. Refer to Driveline Angle Adjustment . Is the propeller shaft unbalanced? | -- | Go to Step 16 | Go to Step 17 |
16 |
Is roughness or vibration still evident? | -- | Go to Step 17 | System OK |
17 | Inspect the parking brake drum. Refer to Brake Drum Inspection . Is the parking brake drum unbalanced? | -- | Go to Step 18 | Go to Step 19 |
18 | Repair or replace the parking brake drum Refer to Brake Drum Inspection . Is roughness or vibration still evident? | -- | Go to Step 19 | System OK |
19 | Inspect the rear joint angle. Refer to Driveline Angle Adjustment . Is the angle too large or too small? | -- | Go to Step 20 | Go to Step 21 |
20 |
Is roughness or vibration still evident? | -- | Go to Step 21 | System OK |
21 | Inspect the slip yoke spline. Is the slip yoke spline excessively loose? | -- | Go to Step 22 | Go to Step 23 |
22 | Replace the parts as necessary. Is roughness or vibration still evident? | -- | Go to Step 23 | System OK |
23 | Inspect the yokes. Are the yokes distorted or damaged? | -- | Go to Step 24 | Go to Step 25 |
24 | Install the new yokes. Is roughness or vibration still evident? | -- | Go to Step 25 | System OK |
25 | Inspect the yokes. Are the yokes out of parallel to each other? | -- | Go to Step 26 | -- |
26 | Clean the propeller shaft. Refer to Driveline Angle Adjustment . Is roughness or vibration still evident? | -- | Go to Step 27 | System OK |
27 | Inspect the propeller shaft. Is there dirt or debris on the propeller shaft? | -- | Go to Step 28 | Go to Step 29 |
28 | Inspect the propeller shaft. Is the propeller shaft bent or dented? | -- | Go to Step 29 | -- |
29 | Replace the propeller shaft. Refer to the following procedures: Is roughness or vibration still evident? | -- | -- | System OK |
