Procedures

13 54 010 - Performing throttle valve basic setting (S65)





Important!
Idle stops of throttle valve assemblies must not be altered! They have been set at the factory and secured against turning with locking paint.





Necessary preliminary tasks:
- Read out fault memory of DME control unit.
- Switch off ignition.
- Remove intake air manifold Service and Repair.





Important!
The throttle valve assembly must be replaced if the locking paint is damaged or the idle speed stop screw (1) is twisted!
Plastic caps (2) on idle speed top screws must not be removed!





Checking throttle valve basic setting:
Gap between stop screw (1) and actuator (2) of throttle valve must be less than 0.05 mm.
To check gap, use a feeler gauge with a thickness of 0.05 mm.
Checking gap:
- Pull pull rod of throttle valve actuator in opening direction of throttle valves.
- Slide feeler gauge (3) between stop screw (1) and actuator (2) of throttle valve.
- Return throttle valves slowly to stops.
When correctly adjusted, feeler gauge will jam between stop screw (1) and actuator (2) of throttle valve.
Perform check on each throttle valve assembly.





Performing throttle valve basic setting:
A basic setting must be performed if the gap is larger than 0.05 mm at one or more throttle valve assemblies.






Note:
To perform correct throttle valve setting, it is necessary to slacken all the screw connections (3) of the actuating lever (2) with the actuating shaft (1). (Replace nuts).
However, if increased play is ascertained, the corresponding cylinder bank must be reset.
Do not slacken the screw connections of the actuating levers for the long pull rods.
The long pull rods must not be disengaged from the actuating levers for the setting procedure.





To slacken screw connection of actuating lever (1), grip screw (3) and release nut (2). (Replace nuts).
Release screw connections of actuating levers of throttle valve assemblies 1-4 and 5-8.





Adjusting a throttle valve assembly:
Move actuating lever (1) in direction of arrow, i.e. "close throttle valve", until actuator (2) of throttle valve rests without play on stop screw (3).

Important!
Do not exert any pressure!





Tighten down screw connection of actuating lever (1) again to actuating shaft. Observe the following instructions in so doing:
- Use nuts only once.
- When pretightening screw connection (approx. 5 Nm), hold actuating lever (1) of throttle valve in direction of arrow at "close throttle valve".
- Only turn nut and grip screw.
- To screw down, use two open-end wrenches which are to be placed at right angles to actuating shaft.
In this way, no lever action is exerted on the throttle valve mechanism; such torque would impair the quality of adjustment.
- After pretightening actuating lever, actuate throttle valve several times at full load.

Note:
If necessary, carry out adjustment with a second person.





Adjusting throttle valve assemblies 1 - 4 and 5 - 8:
The previously described procedure applies to adjusting/setting throttle valve assemblies 1 - 4 and 5 - 8.
Adjust throttle valve assemblies 1 - 4 and 5 - 8 in sequence.
After successfully completing throttle valve basic setting and checking, tighten down all screw connections of throttle valve levers to specified torque 13 54 1AZ Mechanical Specifications.






Note:
After completing adjustment, it is necessary to check the throttle valve basic setting!
If during the checking of one or more throttle valve assemblies excessively large or small play is ascertained, it will be necessary to perform the throttle valve basic setting again!





Important!
After performing work on the throttle valve system (throttle valve assembly, servomotor, Hall sensor), it is absolutely essential to carry out a throttle valve actuator system test with the BMW diagnosis system!
Function selection:
- Complete vehicle
- Drive
- Engine electronics
- Air supply
- Throttle valves
- Throttle valve actuator





Note:
Check stored fault messages.
Then clear fault memory.