BMW 318/325/M3/525/535/M5 1989-1993 Repair Information

Engine Fan


The engine cooling fan is driven by a belt and is bolted to the water pump. A temperature and engine speed sensitive clutch is used to limit the drag imposed on the engine by the fan. With the engine stopped, if the fan is seized, turns too freely or can be moved in a fore-aft manner, the fan clutch should be replaced.


  1. Hold the pulley with tool 11 5 030 or equivalent. The tool is designed to be bolted to 2 of the pulley bolts and to provide the resistance to allow the fan to be unscrewed from the pulley.
  3. Unscrew the fan clockwise. Remove the fan and keep upright. The fan cowl may need to be removed. Be careful of the radiator fins.
  5. Remove the fan from the fan clutch. Install the fan clutch bolts and torque to 6-7 ft. lbs. (8-10 Nm).
  7. Install the fan using tool 11 5 040 or equivalent wrench and holding tool 11 5 030 or equivalent. Torque the nut to 29 ft. lbs. (40 Nm). If using the tool set the torque wrench to 22 ft. lbs. (30 Nm); the additional length of the tool multiplies the torque to achieve 29 ft. lbs. (40 Nm) at the nut.