Air Injection Pump: Service and Repair

Plug Connection for air pump electromagnetic clutch (Y33)
Pull off. Lace out wire. On vehicles with auxiliary heater, unscrew bracket for auxiliary heater.

Shaped hoses (1 and 2)
Remove, refit.

V-belt
Slacken and remove.

Air pump (125)
Remove, reinstall by removing mounting screws (3 and 4).

V-belt
Install and tension. For measuring, use special tool 001 589 69 21 00. Adjusting values according to KG scale on measuring device:
New V-belts 30
Used V-belts 20 - 25

Air pump electromagnetic clutch (Y33)
Remove, reinstall. Service and Repair

Special tool
Handling of measuring device see operating instructions or repair instructions.

Special Tool:

Production Breakpoint: January 1986:

Bearings of pulley shaft reinforced.

Production Breakpoint: August 1989:

Installation conditions improved as a result of sloping face on bottom mounting eye.