Removal and Replacement

Removing and installing engine (N62)
Special tools required: 110 020

Necessary preliminary tasks:
- Disconnect battery negative lead.
- (Follow instructions for disconnecting and connecting battery).[1][2]Battery Help
- Lift engine hood into assembly position.
- Remove radiator design cover.
- Remove air cleaner housing.
- Remove tension strut.
- Remove fresh air duct.
- Detach steering spindle from steering gear.
- Release engine wiring harness from electronics box.
- Drain coolant.
- Remove coolant expansion tank.
- Remove radiator.
- Remove A/C compressor drive belt.
- Remove alternator drive belt.
- Disconnect fuel line.
- Remove front/middle - underbody protection.
- Remove reinforcement plate.Reinforcement Plate Remove and Install
- Remove all lambda oxygen sensors.
- Remove exhaust system
- Remove transmission.

Note:
Do not detach oil lines from automatic transmission to heat exchanger at oil sump.

Important! Risk of damage to oil lines on steering gear.
- Secure starter motor (1) with transmission screw (2) against falling out.

- Detach oil line (1) at screw connection (2).
Set oil line (1) down in engine compartment at front and secure against falling out.
- Release power steering pump (1). Secure against falling out by applying a cable tie (2) to stabilizer bar (3).
- Release A/C compressor (1).

Note: Secure all connecting leads with cable ties (3) against falling down.

- Release and disconnect coolant hoses (1).
- Unlock heater hose (2) and detach in direction of arrow.

Installation:
Plug-in connections of coolant hoses are correctly fitted when they snap into place with a clearly audible click.
Unlock coolant hose (1) on auxiliary water pump and detach in direction of arrow.

- Remove auxiliary water pump.
Unlock hose (1) and detach from secondary air pump. Secure automatic transmission heat exchanger (2) with cable tie (3) against falling
down.

Note: Engine removed for purposes of clarity.
Secure engine wiring harness (2) with cable tie (3) on suction bridge against falling out.

- Mount special tool 11 0 020 on engine.
- Release nut (1) on left and right engine brackets. Unfasten ground strap (2).
- Remove engine.
- Assemble engine.
- Vent cooling system and check for leaks.

Installation:
Risk of damage to automatic fluid lines and servo fluid lines.