31 10 000 Removing and Installing Complete Front Axle (With Spring Struts)
31 10 000 - Removing and installing complete front axle (with spring struts) (M3)
Important!
Before removing front axle carrier:
In order to avoid damage to lifting platform, perform weight compensation on vehicle.
Load spring strut domes with sand bags.
Warning!
Secure engine in installation position with special tool Securing Engine In Installation Position to prevent it from falling down.
Danger of poisoning 00 .. ... Danger of Poisoning If Oil Is Ingested/Absorbed Through the Skin if oil is ingested/absorbed through the skin!
Risk of injury 00 .. ... Risk of Injury If Oil Comes Into Contact With Eyes and Skin if oil comes into contact with eyes and skin!
Important!
Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Close off pipe connections with plugs.
Recycling:
Catch and dispose of hydraulic fluid in a suitable container.
Observe country-specific waste-disposal regulations
Necessary preliminary tasks:
- Secure engine in installation position Securing Engine In Installation Position
- Draw off and dispose off hydraulic fluid from fluid reservoir
- Clamp off battery negative lead 61 20 900 Disconnecting and Connecting Battery Negative Lead
- Disengage both brake hoses from spring strut holder, remove both brake calipers from swivel bearing 34 11 519 Removing and Installing/Replacing Left or Right Front Brake Caliper and tie up
- Disconnect both plug connections for pulse generators and expose lines up to holder on spring strut
- Disconnect both plug connections for brake pad sensor and expose lines up to holder on spring strut
- Remove reinforcement plate 31 10 010 Removing and installing/replacing reinforcement plate
- Remove reinforcement cover on left and right Removing and Installing/Replacing Left/Right Reinforcement Cover
- Remove both stabilizer links from spring strut 31 35 005 Removing and Installing/Replacing Push Rod (Stabilizer Link) For Left/Right Stabilizer
- Disconnect pressure line from power steering gear 32 13 060 Removing and Installing/Replacing Power Steering Gear
- Disconnect return line from power steering gear 32 13 060 Removing and Installing/Replacing Power Steering Gear
- Remove lower section of steering spindle from steering gear 32 31 070 Removing and Installing/Replacing Steering Spindle Lower Section
Release nut (1) for return line (2).
Installation Note:
Replace self-locking nut.
Tightening torque 32 41 11AZ [1][2]32 41 Pump and Oil Supply.
Unscrew nut (1) and bolts (2).
Disconnect pressure line (3) from front axle carrier holder.
Installation Note:
Replace self-locking nut.
Tightening torque 32 41 11AZ [1][2]32 41 Pump and Oil Supply.
Release screws (1).
Fold both holders (2) downwards.
Tie up hydraulic lines.
Installation Note:
Tightening torque 32 41 11AZ [1][2]32 41 Pump and Oil Supply.
Important!
Guide spring struts with your hand when lowering and raising in order to avoid damaging the wheel arches.
After lowering, the spring struts must be aligned to the front axle carrier and secured in such a way that the ball joints of the control arms, tension struts and tie rod ends are not damaged.
Remove both spring struts from spring strut dome 31 31 003 Removing and Installing Complete Front Left or Right Spring Strut.
Lower front axle support.
After installation:
- Fill and bleed hydraulic system Service and Repair
- Check pipe connections for leaks
- Carry out wheel alignment check if a spring strut with support bearing was or has been installed without centering pin.
- Carry out steering angle sensor adjustment Adjustments