Mazda Trucks 1987-1993 Repair Guide

Windshield Washer Motor

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REMOVAL & INSTALLATION



Front Washer Pump Motor
WASHER Motor SECURED By a RETAINING ring

See Figures 1 and 2


WARNING
Never operate the washer fluid pump without fluid in the reservoir. Repeatedly running the reservoir dry will ruin the pump.

The front washer fluid reservoir is connected to the coolant overflow tank, which will be removed as an assembly.

  1. Disconnect the electrical plug and hose from the washer fluid reservoir. Also, if removing the front washer pump, disconnect the coolant overflow hose from its reservoir.
  2.  
  3. Remove the reservoir attaching screws and lift the assembly from the vehicle.
  4.  
  5. Drain and discard the contents of the washer fluid reservoir.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the washer pump and retaining ring mounting

  1. Using a small prytool, pry out the pump retaining ring.
  2.  
  3. Use a pair of pliers and grasp the pump on one wall around the electrical terminals. Pull out the motor and seal from the reservoir.
  4.  



Click image to see an enlarged view

Fig. Fig. 2: Pull the washer pump from the reservoir using a pair of pliers as shown

To install:
  1. Thoroughly clean the reservoir pump chamber and ensure that there is no foreign material in it.
  2.  
  3. Lubricate the outside of the pump seal with a dry lubricant, such as graphite powder.
  4.  
  5. If equipped, align the small tab on the motor with the notch on the reservoir.
  6.  
  7. Install the motor so that the seal seats against the bottom of the chamber.
  8.  
  9. Use a 1 inch (25.4mm) socket, preferable a 12-point socket, hand press the retaining ring securely against the motor end plate.
  10.  
  11. Install the reservoir assembly.
  12.  
  13. Connect the hoses and electrical harness plug.
  14.  
  15. Fill the reservoir and operate the washer system. Check for leaks.
  16.  

WASHER PUMP PRESS FIT INTO RESERVOIR

See Figure 3

  1. Remove the windshield washer fluid reservoir mounting screws.
  2.  
  3. Disconnect the hose(s) from the reservoir tank.
  4.  
  5. Unplug the electrical connector from the washer pump.
  6.  
  7. Remove the washer fluid reservoir from the engine compartment.
  8.  
  9. Empty the washer fluid reservoir.
  10.  
  11. Using a small prying tool, pry out the pump, being careful not to damage the plastic housing.
  12.  
  13. Remove the rubber grommet and inspect for damage or debris.
  14.  



Click image to see an enlarged view

Fig. Fig. 3: Exploded view of the press fit

To install:
  1. Insert the rubber grommet, then lubricate the inside diameter of the grommet with soapy water and install the pump into the reservoir until it is firmly seated.
  2.  
  3. Connect the hose(s), then place the reservoir into position in the engine compartment and tighten the mounting screws.
  4.  
  5. Plug the wiring harness connector to the pump.
  6.  
  7. Fill the reservoir with washer fluid and check pump operation.
  8.  

Rear Washer Pump Motor

Navajo Models

See Figures 4 and 5

  1. Remove the left side rear quarter trim panel as follows:
    1. If equipped, remove the luggage cover from the retainer.
    2.  
    3. Remove the door scuff plate from the floor.
    4.  
    5. Remove the liftgate scuff plate from the floor.
    6.  
    7. Remove the front seat belt attachment from the floor.
    8.  
    9. Remove the rear seat belt anchor from the "B" pillar.
    10.  
    11. Remove the side window latch.
    12.  
    13. Remove the mounting screws and pushpins securing the quarter trim panel assembly. Remove the panel from the vehicle.
    14.  

  2.  



Click image to see an enlarged view

Fig. Fig. 4: Exploded view of the side rear quarter trim panel assembly



Click image to see an enlarged view

Fig. Fig. 5: Location of the rear window washer reservoir and motor assembly

  1. Disconnect the filler hose.
  2.  
  3. Unplug the washer pump motor electrical connector.
  4.  
  5. Loosen the mounting screws and remove the rear window washer reservoir.
  6.  
  7. Using a small prying tool, pry out the pump, being careful not to damage the plastic housing.
  8.  
  9. Remove the one piece seal/filter and inspect for damage or debris.
  10.  

To install:
  1. Insert the seal, then lubricate the inside diameter of the seal with soapy water and install the pump into the reservoir until it is firmly seated.
  2.  
  3. Install the washer hose to the pump discharge nipple, then place the reservoir into position on the quarter panel and tighten the mounting screws.
  4.  
  5. Plug the wiring harness connector to the pump.
  6.  
  7. Connect the filler hoses.
  8.  
  9. Fill the reservoir with washer fluid and check pump operation.
  10.  
  11. Install the left side rear quarter trim panel as follows:
    1. Position the side trim panel inside the vehicle. Insert the seat belt floor attachment through the opening in the panel, if equipped.
    2.  
    3. Install the side trim panel.
    4.  
    5. Install the side window latch.
    6.  
    7. Install the rear seat belt anchor to the "B" pillar. Install the front seat belt attachment to the floor. Tighten the seat belt anchor and attachments to 22-30 ft. lbs. (30-40 Nm).
    8.  
    9. Install the scuff plate to the floor.
    10.  
    11. Install the lower garnish molding to the floor.
    12.  
    13. If equipped, install the luggage cover.
    14.  

  12.  

MPV Models

See Figures 6 and 7

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the mat set end plate.
  4.  



Click image to see an enlarged view

Fig. Fig. 6: Remove the mat set end plate



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Fig. Fig. 7: Separate the rear washer motor from the reservoir

  1. Remove the right side rear trim panel.
  2.  
  3. Disconnect the washer fluid hose and wiring harness.
  4.  
  5. Loosen the mounting screws and remove the rear washer fluid reservoir.
  6.  
  7. Empty out the fluid from the reservoir.
  8.  
  9. Loosen the two retaining screws and remove the rear washer motor from the reservoir.
  10.  

To install:
  1. Hold the washer motor in place on the reaservoir and install the two retaining screws.
  2.  
  3. Hold the washer fluid reservoir in position, then connect the fluid hose and wiring harness. Install and tighten the mounting screws.
  4.  
  5. Connect the negative battery cable.
  6.  
  7. Fill the reservoir with washer fluid and check pump operation.
  8.  
  9. Install the right side rear trim panel.
  10.  
  11. Install the mat set end plate.
  12.  

 
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