GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Montana 🢒 Engine 🢒 Engine Controls - 3.4L 🢒 Wiper Motor Crank Arm Replacement

Removal Procedure

    Object Number: 512039 Size: SH
  1. Remove the wiper system module cover. Refer to Wiper Module Cover Replacement .
  2. Remove the drive link from the wiper motor crank arm.
    3. 2.1. Loosen the two screws.
    2.2. Remove the wiper linkage from the wiper motor crank arm.
  3. Remove the crank arm cover and seal.
  4. Remove the wiper motor crank arm from the wiper motor.
    5. 4.1. Loosen the screw.
    4.2. Tap on the screw with a soft-faced mallet while holding up on the crank arm until the crank arm loosens from the wiper motor.
    4.3. Remove the screw and the crank arm from the wiper motor.

Installation Procedure

    Object Number: 512039 Size: SH
  1. Install the crank arm on the wiper motor.
    2. 1.1. Turn the ignition switch to the ACCY position.
    1.2. Set the wiper switch to PULSE position. The wiper motor should be operating.
    1.3. Turn the ignition switch to OFF when the wiper motor is in the innerwipe position.

            Important: Do not rotate the wiper motor shaft during the installation of the crank arm.

    1.4. Install the crank arm on the wiper motor while maintaining a 4-8 mm (0.157- 0.315 in) gap between the V-grove in the wiper motor crank arm and the tab.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the screw.

    3. Tighten
    Tighten the screw to 14-17 N·m (124-150 lb in).

  3. Install the crank arm cover and seal.

    4. Object Number: 512040 Size: SH
  4. Check the gap between the crank arm and tab. If the gap is not 4-8 mm (0.157- 0.315 in), remove the crank arm and repeat installation steps.
  5. Install the drive link on the crank arm.
  6. Tighten the two drive link screws.

    7. Tighten
    Tighten the two screws to 5 N·m (44 lb in).

  7. Install the wiper system module cover. Refer to Wiper Module Cover Replacement .
  8. Operate the wipers and check for proper operation.