For 1990-2009 cars

Step | Action | 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 Propeller Shaft Center Support 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 in Maintenance and Lubrication. 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 in Tires and Wheels. 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 |

1. Inspect the snap ring locating surfaces on the flange yokes.
2. Rework or replace the yokes. Refer to Parking Brake Cable Adjuster Disabling in Park Brake.

Is roughness or vibration still evident?

Go to Step 15

System OK

15 | Inspect the propeller shaft. Refer to Driveline Working Angles Measurement in Vibration Diagnosis and Correction. Is the propeller shaft unbalanced? | Go to Step 16 | Go to Step 17
16 |

1. Inspect the propeller shaft for a missing balance weight.
2. Remove the propeller shaft.
3. Install the propeller shaft to the companion flange 180 degree from the original position.

Is roughness or vibration still evident?

Go to Step 17

System OK

17 | Inspect the parking brake drum. Refer to Park Brake Drum Inspection in Park Brake. Is the parking brake drum unbalanced? | Go to Step 18 | Go to Step 19
18 | Replace the parking brake drum. Refer to Propeller Shaft Parking Brake Drum Replacement in Park Brake. Is roughness or vibration still evident? | Go to Step 19 | System OK
19 | Inspect the rear joint angle. Refer to Driveline Working Angles Measurement in Vibration Diagnosis and Correction. Is the angle too large or too small? | Go to Step 20 | Go to Step 21
20 |

1. Check the rear joint angle. Refer to Driveline Working Angles Measurement in Vibration Diagnosis and Correction.
2. Correct the rear joint angle.

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 | Go to Step 26
26 | Inspect the propeller shaft. Is there dirt or debris on the propeller shaft? | Go to Step 27 | Go to Step 28
27 | Clean the propeller shaft. Refer to Driveline Working Angles Measurement in Vibration Diagnosis and Correction. Is roughness or vibration still evident? | Go to Step 28 | Go to Step 29
28 | Inspect the propeller shaft. Is the propeller shaft bent or dented? | Go to Step 29 | System OK
29 | Replace the propeller shaft. Refer to one of the following procedures:

• | One-Piece Propeller Shaft Replacement

• | Two-Piece Propeller Shaft Replacement

• | Three-Piece Propeller Shaft Replacement

• | Four-Piece Propeller Shaft Replacement

• | Tandem Axle Propeller Shaft Replacement

Is the replacement complete?

System OK

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