Mazda Trucks 1987-1993 Repair Guide

Cables

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REMOVAL & INSTALLATION



See Figures 1 and 2

Front


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Fig. Fig. 1: 4WD Pickup parking brake cable assembly-2WD Pickup similar



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Fig. Fig. 2: MPV parking brake cable assembly

PICKUPS AND MPV
  1. Make sure the parking brake is fully released. Remove the parking brake lever adjusting nut from the forward end of the front cable.
  2.  
  3. Remove the seat(s) and roll back the front format, as required. On MPV, remove the cable cover. Raise and safely support the vehicle, as necessary.
  4.  
  5. Disengage the rear cables from the equalizer and remove the spring. Disconnect the front cable from the equalizer.
  6.  
  7. Remove the bolts from the cable retaining straps and remove the cable.
  8.  
  9. Install in reverse order. Adjust the parking brake.
  10.  

NAVAJO
  1. Raise and safely support the vehicle.
  2.  
  3. Back off the equalizer nut and remove the cable end of the intermediate cable from the tension limiter.
  4.  
  5. Remove the intermediate cable from the bracket and disconnect the intermediate cable from the front cable.
  6.  
  7. Lower the vehicle. Remove the forward ball end of the parking brake cable from the control assembly clevis.
  8.  
  9. Remove the cable from the control assembly.
  10.  
  11. Using a cord attached to the control lever end of the cable, remove the cable from the vehicle pulling it up into the passenger compartment.
  12.  

To install:
  1. Install in reverse order. Adjust the parking brake.
  2.  

Rear

PICKUPS AND MPV

See Figures 1 and 2

  1. Make sure the parking brake is fully released. Loosen the parking brake lever adjusting nut.
  2.  
  3. Remove the seat(s) and roll back the front format, as required. On MPV, remove the cable cover.
  4.  
  5. Raise and safely support the vehicle. Disconnect the rear cable from the equalizer.
  6.  
  7. Remove the rear wheel and tire assembly, brake drum and brake shoes. Disconnect the cable from the backing plate.
  8.  
  9. Remove the bolts from the cable retaining straps and disconnect the spring from the cable. Remove the cable.
  10.  
  11. Install in reverse order. Adjust the parking brake.
  12.  

NAVAJO

See Figure 3

  1. Release the parking brake control.
  2.  
  3. Raise and safely support the vehicle. Remove the wheel and tire assembly, brake drum and brake shoes.
  4.  
  5. Remove the locknut on the threaded rod at the equalizer. Disconnect the rear parking brake cable from the equalizer.
  6.  
  7. Compress the prongs that retain the cable housing to the frame bracket or crossmember and pull out the cable and housing.
  8.  
  9. Working on the wheel side of the backing plate, compress the prongs on the cable retainer so they can pass through the hole in the brake backing plate.
  10.  



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Fig. Fig. 3: Rear parking brake cable installation

  1. Lift the cable out of the slot in the parking brake lever, attached to the secondary brake shoe, and remove the cable through the brake backing plate hole.
  2.  

To install:
  1. Route the cable through the hole in the backing plate. Insert the cable anchor behind the slot in the parking brake lever. Make sure the cable is securely engaged in the parking brake lever so the cable return spring is holding the cable in the parking brake lever.
  2.  
  3. Push the retainer through the hole in the backing plate so the retainer prongs engage the backing plate.
  4.  
  5. Properly route the cable and insert the front of the cable through the frame bracket or crossmember until the prongs expand. Connect the rear cables to the equalizer.
  6.  
  7. Rotate the equalizer 90° and recouple the threaded rod to the equalizer.
  8.  
  9. Install the brake shoes, brake drum and wheel and tire assembly. Adjust the rear brakes.
  10.  
  11. Adjust the parking brake tension using the initial adjustment or the field adjustment procedure, as necessary.
  12.  
  13. Apply and release the parking brake control several times. Rotate both wheels to make sure the parking brakes are applied and released and not dragging.
  14.  

ADJUSTMENT



Pickups and MPV

See Figures 4, 1 and 2



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Fig. Fig. 4: Adjust the parking brake cable at the lever

  1. Make sure the rear brake shoes are properly adjusted.
  2.  
  3. Start the engine and depress the brake pedal several times while the vehicle is moving in reverse.
  4.  
  5. Stop the engine.
  6.  
  7. On MPV, remove the screw and remove the parking brake lever cover. Remove the adjusting nut clip.
  8.  
  9. On B Series pickup, loosen the locknut at the end of the front cable, near the parking brake lever.
  10.  
  11. Turn the adjusting nut until the parking brake is fully applied when the lever is pulled 7-12 notches on B Series pickup or 5-7 notches on MPV.
  12.  
  13. Tighten the locknut on B Series pickup.
  14.  
  15. Install the adjusting nut clip and the parking brake lever cover on MPV.
  16.  

Navajo

Adjust the drum brakes before adjusting the parking brake. The brake drums must be cold for correct adjustment.

INITIAL ADJUSTMENT

Use this procedure when a new tension limiter is installed.

  1. Apply the parking brake pedal to the fully engaged position.
  2.  
  3. Raise and safely support the vehicle, as necessary. Hold the threaded rod end of the right brake cable to keep it from spinning and thread the equalizer nut 2 1 / 2 inches (63.5mm) up the rod.
  4.  
  5. Check to make sure the cinch strap has slipped and there are less than 1 3 / 8 inches (35mm) remaining.
  6.  
  7. Release the parking brake and check for proper operation.
  8.  

FIELD ADJUSTMENT

Use this procedure to correct a slack system if a new tension limiter is not installed.

  1. Apply the parking brake pedal to the fully engaged position.
  2.  
  3. Raise and safely support the vehicle, as necessary. Grip the threaded rod to keep it from spinning and tighten the equalizer nut 6 full turns past its original position on the threaded rod.
  4.  
  5. Attach a suitable cable tension gauge in front of the equalizer assembly on the front cable and measure the cable tension. The cable tension should be 400-600 lbs. (181.5-272 kg) with the parking brake pedal in the last detent position. If tension is low, repeat Steps 2 and 3.
  6.  
  7. Release parking brake and check for rear wheel drag. There should be no brake drag.
  8.  

 
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