FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Correction and Parts Information

Correction:
In order to check/repair all affected vehicles, the following procedure should be followed:





- Determine the production date of the VANOS Hydro-Mechanical Camshaft adjusting unit. The production date code (3 digit number) is stamped onto the front cover of the VANOS housing as shown in illustration 1.

NOTE:
The numbers stamped onto the cover to the left or right of the production date code (i.e. 92 1, 2, 3), are not used for this check and should be disregarded.



- If the production date code is 251 or greater, no further action is required.

- It the production date code is less than 251, the solenoid valve must be torqued to 40-46 N-m (29.4 to 33.8 ft.lb.). Wrench size is 32 mm.





- After torquing the valve, check the clearance between the front face of the valve's hex wrench surface and the VANOS housing (see illustration 2).

If the clearance is less than 0.05 mm (0.00197 in.), no further action is required.

If the clearance is 0.05 mm (0.00197 in.) or larger, the solenoid valve must be replaced with a new valve, P/N 11 36 1 738 494.

NOTE:
When replacing the VANOS solenoid valve, the control piston and spring should remain in the VANOS housing and should not be replaced. In isolated cases, the new VANOS solenoid valves may be supplied with new control pistons. These new control pistons must be scrapped and should never be used in other VANOS adjusting units.



Parts
Information:
Part Number
(if required) Quantity Description
11 36 1 738 494 1 Solenoid valve (4/2-way valve)