WM 390815 Adjusting The Ring Gear And Pinion Shaft (Gt2, Gt3, Gt2 RS & Gt3 RS): Information

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Information

If the output shaft and crown wheel have to be adjusted, it is best to follow the sequence below in the interest of rational working:

Overview of adjustment operations:

Fig 1: Identifying Shim Locations

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

S1 - Shim thickness for left taper roller bearing
S2 - Shim thickness for right taper roller bearing
S3 - Shim thickness for cylindrical-roller bearing on output shaft
S4 - Shim thickness for four-point bearing (large)
S5 - Shim thickness for four-point bearing (small)

Measure differential (total shim thickness -S1- and -S2- ).
Measure and adjust output shaft (shim thickness -S4- and -S5- ).
Measure and adjust output shaft (shim thickness -S3- ).
Adjust differential (total shim thickness -S1- and -S2- ).
Check bevel gear/crown wheel pairing (tooth backlash).