Impreza Brighton Coupe AWD F4-2.2L SOHC (1997)
6. Stake the lock nut securely at two places.
7. Measure dimension "B" of the drive pinion shaft.
8. Determine the thickness t (mm) of the drive pinion shim.
t = 6.5 +/- 0.0625 - (B - A)
NOTE: The number of shims must be three or less.