Impreza 2.5 RS Coupe AWD F4-2.5L SOHC (2001)
Drive/Propeller Shaft: Component Tests and General Diagnostics
E: INSPECTION
NOTE: Do not disassemble propeller shaft. Check the following and replace if necessary.
1. Tube surfaces for dents or cracks
2. Splines for deformation or abnormal wear
3. Joints for non-smooth operation or abnormal noise
4. Center bearing for free play, noise or non-smooth operation
5. Oil seals for abnormal wear or damage
6. Center bearing for breakage
Check the following points with propeller shaft installed in vehicle.
7. Joints and connections
Check for any looseness of yoke flange connecting bolts and center-bearing retaining bolts.
8. Splines and bearing locations
Turn propeller shaft by hand to see if abnormal free play exists at splines. Also move yokes to see if abnormal free play exists at spiders and
bearings.
9. Runout of propeller shaft
Turn rear wheels by hand to check for "runout" of propeller shaft.
NOTE: Measure runout with a dial gauge at the center of front and rear propeller shaft tubes.
Runout: Limit 0.6 mm (0.024 inch)
10. Center bearing free play
While holding propeller shaft near center bearing with your hand, move it up and down, and left and right to check for any abnormal bearing free
play.