Mitsubishi 3000GT 1991, Service Manual

Page: 609 / 1146

REAR AXLE
Service Adjustment Procedures
PROCEDURES
REAR AXLE TOTAL BACKLASH CHECK
If the vehicle vibrates and produces a booming sound due to an
imbalance of the driving system, measure the rear axle total
backlash by the following procedures to see if the differential
carrier assembly required removal.
Place the gearshift lever in the neutral position, apply the
parking brake and jack up the vehicle.
(2) Manually turn the propeller shaft clockwise as far as it will
go and make mating marks on the companion flange dust
shield and the differential carrier.
(3) Manually turn the propeller shaft counterclockwise as far as
it will go and measure the movement of the mating marks.
Limit: 5 mm in.)
(4) If the backlash exceeds the limit, remove the differential
carrier assembly and adjust the backlash. (Refer to
GEAR OIL LEVEL CHECK
1. Remove the filler plug, and check the oil level.
2. The oil level is sufficient if it reaches the filler plug hole.
Specified oil:
Hypoid Gear Oil API classification GL-5 or higher
liter (1.2
NOTE
Above -23°C (-10°F): SAE 90,
From -34°C (-30°F) to -23°C (-10°F): SAE
Below -34°C (-30°F): SAE 75W
REAR WHEEL BEARING END PLAY CHECK
1. Support the vehicle on axle stands positioned at the
specified locations and remove the rear wheel.
2. Separate the parking brake cable from the rear brake.
3. Remove the caliper assembly and brake disc.
4. Place a dial gauge as shown in the illustration, and then
measure the play when the axle shaft is moved in the axial
direction.
Limit: 0.8 mm in.)
5. If the play exceeds the limit, check the tightening torque of
the companion flange of the axle shaft; if it is correct,
replace the wheel bearing.
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