Throttle Body: Service and Repair

13 54 045 - Removing and installing/sealing a throttle valve assembly (S85)





Special tools required:
- 34 3 171 34 3 170 Set of Socket Wrenches





Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Switch off ignition
- Follow instructions on connecting and disconnecting battery Instructions for Disconnecting and Connecting Battery
- Disconnect battery negative lead Disconnecting and Connecting Battery Negative Lead and cover
- Remove intake air manifold Service and Repair





Removing throttle valve assembly 6:





Unfasten screws. Disconnect injection pipe (1) from throttle valve assembly.
Remove pull rod (2).
Unlock plug (3) and remove.





Unclip lines (1).
Release bolts and remove cover (2).
Tightening torque 13 54 2AZ 13 54.





Release screw (1).
Tightening torque 13 54 3AZ 13 54.
Release screw connections (2) of actuating levers. Grip screw and turn nut in the process.
Remove screws from bores.

Installation:
- Use screws and nuts only once.
- Only turn nuts and grip screws.
- Tightening torque 13 54 1AZ 13 54.

Unclip pull rod (3) from actuating lever.

Slide actuating shaft (5) in direction of arrow.
Release nuts (4) with special tool 34 3 171 34 3 170 Set of Socket Wrenches and remove throttle valve assembly (6).





Installation:
Clean sealing surface (1). Note correct position of adapter sleeves (2).





Installation:
Clean sealing face on cylinder head.
Replace O-ring (1) on cylinder head.





Note:
Perform basic throttle valve setting





Removing throttle valve assembly 5:
Procedure is described in the repair instruction "Removing right Hall sensor Service and Repair".





Removing throttle valve assemblies 1 - 4 and 7 - 10:

Necessary preliminary tasks:
Remove throttle valve assembly





Removing throttle valve assembly 7:
Release screw.
Tightening torque 13 54 3AZ 13 54.
Detach lock washer (1) from actuating shaft.
Release screw connections (2) of actuating levers. Grip screw and turn nut in the process.
Remove screws from bores.

Installation:
- Use screws and nuts only once.
- Only turn nuts and grip screws.
- Tightening torque 13 54 1AZ 13 54.

Unclip pull rod (3) from throttle valve assembly 7.

Detach throttle valve assemblies 6 and 7 with actuating lever from actuating shaft.





Installation:
Actuating lever (1) of throttle valve assembly 6 and actuating lever (2) of pull rod for throttle valve actuator are offset approx. 180° to each other.
Ball ends are turned to each other.





Removing throttle valve assemblies 8, 9 and 10:
Release screw connections (4) of actuating levers. Grip screw and turn nut in the process.
Remove screws from bores.

Installation:
- Use screws and nuts only once
- Only turn nuts and grip screws.
- Do not tighten down nuts yet.

Pull throttle valve assemblies 8, 9 and 10 as required in sequence with actuating lever from actuating shaft.





Removing throttle valve assembly 4:
Release screw.
Tightening torque 13 54 3AZ 13 54.
Detach lock washer (1) from actuating shaft.
Release screw connection (2) of actuating shaft. Grip screw and turn nut in the process.
Remove screw from bore.

Installation:
- Use screw and nut only once.
- Only turn nut and grip screw.
- Tightening torque 13 54 1AZ 13 54.

Unclip pull rod (3) from throttle valve assembly 4.

Detach throttle valve assemblies 5 and 4 with actuating lever from actuating shaft.





Removing throttle valve assemblies 1, 2 and 3:
Release screw connections (4) of actuating levers. Grip screw and turn nut in the process.
Remove screws from bores.

Installation:
- Use screws and nuts only once.
- Only turn nuts and grip screws.
- Do not tighten down nuts yet.

Detach throttle valve assemblies 1, 2 and 3 as required in sequence with actuating lever from actuating shaft.





Installation:
Actuating lever (1) of throttle valve assembly 3 and actuating lever (2) of pull rod for throttle valve actuator are offset approx. 180° to each other.
Ball ends are turned to each other.





Note:
Perform throttle valve basic setting .