Suzuki Grand Vitara XL-7 Service Manual page 567

7F-20 DIFFERENTIAL (REAR)
TOOTH CONTACT PATTERN DIAGNOSIS AND REMEDY
NORMAL
HIGH CONTACT
Pinion is positioned too far from the center of drive
bevel gear.
1) Increase thickness of pinion height adjusting
shim and position pinion closer to gear center.
2) Adjust drive bevel gear backlash to specification.
LOW CONTACT
Pinion is positioned too close to the center of drive
bevel gear.
1) Decrease thickness of pinion height adjusting
shim and position pinion farther from gear center.
2) Adjust drive bevel gear backlash to
specification.
If adjustment is impossible, replace differential carrier.
1) Check seating of bevel gear or differential case.
(Check bevel gear for runout).
2) If adjustment is impossible, replace drive bevel gear & pinion set
or differential carrier.
Replace drive bevel gear & pinion set or differential case.