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

Windshield Wiper Motor & Linkage

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REMOVAL & INSTALLATION



E30 3 Series
  1. Remove the heater blower motor and the bracket under the wiper motor.
  2.  
  3. Disconnect the motor wiring. If only removing the motor, remove the shaft nut and the 3 mounting nuts. Pull the motor out.
  4.  
  5. Release the clips on the blower plate and disconnect the flaps to remove the blower plate.
  6.  
  7. Remove the wiper arms and the grill. Disconnect the links on the mount for the left pivot.
  8.  
  9. Remove the shaft covers and remove the nut. Remove the washer and pull the linkage out of the opening.
  10.  

To install:
  1. Install the linkage, washer and nuts. Install the shaft covers and connect the left pivot links. Install the grill and the wiper arms.
  2.  
  3. Install the blower plate and clip into place. Install the motor and link on the shaft.
  4.  
  5. Connect the wires, install the mount and the blower motor.
  6.  

E36 3 Series
4 DOOR
  1. Return the wipers to the parked position and remove the fuse. Remove the wiper arms. Disconnect the negative battery terminal.
  2.  

Do not operate the wipers while the hood is open. With the hood open the wiper arms could damage the hood and windshield.

  1. Remove the intake air cowl grill cover. Remove the bolts at the ends of the cowl and from the inside holding the electrical duct. Pull the cowl out from the left.
  2.  
  3. On M50 equipped vehicles, remove the injector cover and the valve cover cladding.
  4.  
  5. Protect the inside and edges of the cowl area to prevent scratching. Loosen and remove the wiper arm shaft nuts. Remove the brace holding the linkage and disconnect the wiring plug.
  6.  
  7. Wrap tape around the left wiper arm shaft to prevent scratching. Pull the linkage down on the right and rotate the linkage out of the cowl.
  8.  
  9. Pull of the linkage rods from the motor crank. Remove the motor crank nut and pull off the crank. Remove the 3 mounting bolts and remove the motor.
  10.  

To install:
  1. Connect the wiper motor to the electrical plug and actuate the motor to return the motor to the parked position, if necessary. Install the motor on the linkage and press on the crank arm. The arm should make a straight line with the right side drive linkage while in the parked position. Install the nut on the motor shaft. Press on the linkage arms.
  2.  
  3. Install the linkage starting with the left side. Rotate the linkage into place and pass the wiper arm shafts through the openings.
  4.  
  5. Install the wiper arm shaft nuts, then the brace to motor bolt and then the brace to the body bolt. Check the rubber bushings on the wiring at the electrical ducts are secure to prevent water from entering. Connect the wiper plug.
  6.  
  7. On M50 equipped vehicles, install the injector cover and the valve cover cladding.
  8.  
  9. Install the air intake cowl. Connect the electrical duct and install the grill.
  10.  
  11. Connect the negative battery terminal and the wiper fuse. Cycle the wiper motor and install the wiper arms. Close the hood before operating the wipers again.
  12.  

2 DOOR
  1. Return the wipers to the parked position and remove the fuse. Remove the wiper arms. Disconnect the negative battery terminal.
  2.  
  3. Open the hood and remove the bolts from both sides. Pull the hood towards the front and remove the cowl trim piece.
  4.  
  5. Remove the intake air cowl grill cover. Remove the bolts at the ends of the cowl and from the inside holding the electrical duct. Pull the cowl out from the left.
  6.  
  7. Remove the 4 linkage mounting bolts along the cowl starting at the right side near the center of the vehicle and working to the left. Remove the 2 bolts holding the motor brace and disconnect the motor electrical plug. To be able to remove the linkage from the cowl, unscrew the connector from the firewall, but do not push it into the opening.
  8.  
  9. Protect the inside and edges of the cowl area to prevent scratching. Loosen and remove the wiper arm shaft nuts.
  10.  
  11. Wrap tape around the left wiper arm shaft to prevent scratching. Pull the linkage down on the right and rotate the linkage out of the cowl.
  12.  
  13. Pull of the linkage rods from the motor crank. Remove the motor crank nut and pull off the crank. Remove the 3 mounting bolts and remove the motor.
  14.  

To install:
  1. Connect the wiper motor to the electrical plug and actuate the motor to return the motor to the parked position, if necessary. Install the motor on the linkage and press on the crank arm. The arm should make a straight line with the right side drive linkage while in the parked position. Install the nut on the motor shaft. Press on the linkage arms.
  2.  
  3. Install the linkage starting with the left side. Rotate the linkage into place and pass the wiper arm shafts through the openings. Install the connector and connect the plug. Attach the wire to the holder with a wire tie.
  4.  
  5. Install and tighten the 4 linkage mounting bolts to finger tight. To prevent body damage, tighten the bolts starting with the leftmost bolt near the hood hinge, then the bolt nearest the center of the vehicle. Tighten the bolt next to that one and then the last bolt.
  6.  
  7. Install the wiper arm shaft nuts, then the brace to motor bolt and then the brace to the body bolt. Check the rubber bushings on the wiring at the electrical ducts are secure to prevent water from entering.
  8.  
  9. Install the air intake cowl. Connect the electrical duct and install the grill.
  10.  
  11. Connect the negative battery terminal and the wiper fuse. Cycle the wiper motor and install the wiper arms.
  12.  

E34 5 Series
  1. Cycle the wipers to return to parked position. Turn the heater blower control to 0 and turn the ignition switch ON and OFF to close the heater box ventilation flaps. Remove the heater blower and remove the heater linkage cover.
  2.  
  3. Disconnect the negative battery terminal and disconnect the heater linkage. Pull out the temperature sensor. Remove the retainers to pull the inlet cowls out and remove the cover.
  4.  
  5. Disconnect the motor mounting brace. Remove the wiper arms. Remove the cowl cover retainers and the cover.
  6.  
  7. Loosen and remove the wiper arm shaft nuts. Disconnect the wiring plug. Pull the linkage out of the cowl.
  8.  
  9. Mark the relationship of the crank arm to the motor shaft and remove. Remove the 3 mounting bolts to remove the motor.
  10.  

To install:
  1. Install the motor to the linkage. If the position of the motor has been changed or a new motor is being installed, connect the motor to the electrical plug and cycle the motor once to return it to the parked position.
  2.  
  3. Install the crank arm to the original position as marked. If it is a new motor, align the crank arm with the linkage arm so they form a straight line.
  4.  
  5. Install the linkage in the cowl. Connect the motor electrical plug and install the wiper arm shaft nuts. Install the cowl cover and the wiper arms. Install the motor brace.
  6.  
  7. Install the inlet cowls and the cover. Install the temperature sensor and connect the heater linkage. Install the heater blower and connect the negative battery terminal.
  8.  

 
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