Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Drive/Propeller Shaft: Testing and Inspection
Shaft Angle Measurement
DRIVELINE ANGLE MEASUREMENT PREPARATION
Before measuring universal joint angles, the following must be done;
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Inflate all tires to correct pressure.
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Check the angles in the same loaded or unloaded condition as when the vibration occurred.
Propeller shaft angles change according to the amount of load in the vehicle.
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Check the condition of all suspension components and verify all fasteners are torqued to specifications.
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Check the condition of the engine and transmission mounts and verify all fasteners are torqued to specifications.
PROPELLER SHAFT ANGLE MEASUREMENT
To accurately check driveline alignment, raise and support the vehicle at the axles as level as possible. Allow the wheels and propeller shaft to turn.
1. Remove any external bearing snap rings, if equipped, from universal joint so protractor base sits flat.
2. Rotate the shaft until transmission/transfer case output yoke bearing is facing downward.
Always make measurements from front to rear. Also, be sure to take all measurements while working from the same side of the vehicle.
Front (Output) Angle Measurement (A)
3. Place Inclinometer on yoke bearing (A) parallel to the shaft. Center bubble in sight glass and record measurement.
This measurement will give you the transmission or Output Yoke Angle (A).
Propeller Shaft Angle Measurement (C)
4. Rotate propeller shaft 90 degrees and place Inclinometer on yoke bearing parallel to the shaft. Center bubble in sight glass and record
measurement. This measurement can also be taken at the rear end of the shaft.
This measurement will give you the Propeller Shaft Angle (C).
