Contents: Replacing drive shaft seals ↓ Replacing the speed sensor sealing…↓ Replacing the transfer case seal on…↓
Transmission fluid leaks most often occur due to wear and aging of the drive shaft seals or the speedometer drive (speed sensor). Replacing these rings is not difficult, as they can be replaced without removing the gearbox from the vehicle.
Replacing drive shaft seals
The sealing cuffs are located on the sides of the gearbox, in places where the drive shafts connect to the differential axle gears. If fluid leaks through the drive shaft seals, the side surfaces of the gearbox housing will be covered with transmission fluid.
Raise the car on a lift.
Remove the drive shaft.
Figure 9.10. Removing the drive shaft seal
Using a screwdriver blade or a puller, remove the seal from the groove in the differential housing, being careful not to damage the surface of the groove (figure 9.10).
Clean the groove for installing the cuff.
Lubricate the outer surface and the working edge of the new seal with engine oil.
Using a tubular mandrel with an outside diameter slightly smaller than the outside diameter of the cuff, install the cuff into the groove. Make sure the cuff is installed without distortion.
Installation depth of the sealing cuff relative to the end of the groove in the differential housing, mm:
- right side on models from 1996 to 2001: –0.5...+ 0.5
- left side on single-drive models from 1996 to 2001: 4.7...5.7
- both sides on all-wheel drive models from 1996 to 2001: –0.5...+ 0.5
- both sides on single-axle models since 2001: –0.5...+ 0.5
- right side on all-wheel drive models since 2001: –0.5...1.5
- left side on all-wheel drive models since 2001: –0.5...+ 0.5
Install the drive shaft, being careful not to damage the working edge of the sealing cuff.
Replacing the speed sensor sealing ring
The gearbox is equipped with two speed sensors: one monitors the rotation speed of the primary shaft, the other - the secondary shaft. They are secured in the same way: with a bolt that holds them at the required level. Sealing is achieved by means of a circular sealing ring.
To replace the sealing ring, disconnect the sensor electrical connector, remove the bolt and remove the speed sensor from the transmission housing.
Use a screwdriver blade to remove the O-ring from the sensor, install a new O-ring and lubricate it with transmission fluid.
Installation is carried out in the reverse order of removal.
Replacing the transfer case seal on all-wheel drive vehicles
Remove the driveshaft.
Use a screwdriver blade to remove the old seal, being careful not to damage the surface of the seal installation groove and the shaft splines.
Clean the groove for installing the cuff.
Lubricate the surface of the new sealing cuff with engine oil.
Using a tubular mandrel with an outside diameter slightly smaller than the outside diameter of the seal, install the new seal into the groove. Make sure the cuff is installed without tilting to a depth of 1.1 to 1.9 mm.
Lubricate the splines and the outer surface of the flange that contacts the sealing cuff and install the drive shaft.