32 13 060 Removing and installing/replacing power steering gear
Secure engine in installation position to prevent it from falling down. See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N52, N53) .
Danger of poisoning if oil is ingested/absorbed through the skin!
Risk of injury if oil comes into contact with eyes and skin!
Seal off hydraulic lines with plugs.
Necessary preliminary tasks:
- Disconnect battery negative lead . See 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
- Draw off and dispose off hydraulic fluid from fluid reservoir
- Secure engine in installation position . See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N52, N53) .
- Remove both tie rod ends from swivel bearing
- Replacement only: Remove both tie rod ends from tie rod
- Lower front axle support . See 31 11 506 LOWERING/RAISING FRONT AXLE CARRIER .
- Remove left mounting bracket or engine mount from front axle carrier . See ENGINE AND GEARBOX SUSPENSION - REPAIR INSTRUCTIONS .
- Engine mount with vacuum connection: Remove right engine mount from front axle carrier . See ENGINE AND GEARBOX SUSPENSION - REPAIR INSTRUCTIONS .
Banjo bolt (A) for pressure line (expansion hose) must be replaced by banjo bolt with non-return valve (B).
If necessary, remove heat shield from power steering gear. Release banjo bolts (1).
Disconnect pressure line and return line from power steering gear.
Installation:
Replace all sealing rings.
Make sure hydraulic lines are laid without tension and with sufficient spacing to adjoining components.
Tightening torque 32 41 3AZ . See 41 PUMP AND OIL SUPPLY .
Release screw (1).
Release nuts (2) and remove screws towards bottom.
Installation:
Replace screws and self-locking nuts.
Tightening torque 32 00 1AZ . See 00 ELECTRONIC CHASSIS ALIGNMENT .
Version with active steering:
Disconnect plug connections (1-4).
Raise power steering gear and unclip wiring harness.
Move power steering gear to right and remove towards rear.
After installation:
- Fill and bleed hydraulic system or power steering (version with Dynamic Drive) .
- Check pipe connections for leaks
- Perform chassis alignment check . See 32 00 150 KDS chassis/wheel alignment check with load up to design position and 32 00 155 KDS chassis/wheel alignment check with ride-height measurement without load .
- Carry out steering angle sensor adjustment/adjustment for active front steering . See 61 31 996 CARRYING OUT STEERING ANGLE SENSOR ADJUSTMENT .
- If necessary, use scan tool and carry out initial Dynamic Drive operation . See 37 10 001 INITIAL OPERATION WITH TEST RUN OF DYNAMIC DRIVE .