Drive Axle, Removing and Installing
Drive Axle, Removing and Installing
Removing
- Remove hubcap, for light-alloy wheels pull off center cap (use pulling hook in vehicle tools).
- Loosen hex bolt for outer joint of drive axle a maximum of 90° (vehicle is standing on its wheels).
- Remove wheel.
- Thread in all five wheel bolts again.
- Remove hex bolt for outer joint of drive axle (vehicle has been raised using a lift). (if necessary, have a second technician operate brake)
- Thread in all five wheel bolts again.
- Unscrew drive axle from flange shaft/transmission.
1. hexagon socket head bolts
- Pull cable of ABS wheel speed sensor out of bracket on brake caliper (arrow).
- Pull ABS wheel speed sensor slightly out of wheel bearing housing.
- Remove nut -1- and hex bolt, and lift out both control arms -2-.
- Slits in wheel bearing housing may not be widened with a chisel or similar tool!
Note: Do not remove bolts -3- and -4-, otherwise the adjustment of the front axle will change!
- Swing away wheel bearing housing toward side, in direction of arrow.
- Remove drive axle.
Installing
- Insert drive axle into wheel bearing housing.
- Insert both upper control arms, tighten nuts to 40 Nm.
- While tightening, press control arm as far as possible in the direction of the wheel bearing housing.
- Bolt drive axle onto transmission.
- Tightening torques: M8 = 40 Nm, M10 = 70 Nm.
- Press ABS wheel speed sensor into wheel bearing housing until impact and insert cable into bracket on brake caliper.
- Bolt in outer joint of drive axle
Note: Vehicle must not contact ground when tightening outer joint of drive axle.
A second technician is required for the next work step:
- Technician 1: sits in car and operates the foot brake
- Technician 2: tightens hex bolt for drive axle
Hex bolt M 14: 115 Nm
Hex bolt M 16: 190 Nm
- Mount wheel.
- Tighten hex bolt for drive axle. Only tighten when vehicle is standing on its wheels: accident danger.
Hex bolt M14: 115 Nm + turn another 180°
Hex bolt M16: 190 Nm + turn another 180°