Nissan Pick-ups and Pathfinder 1970-1988

Brake Drum

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CAUTION
Brake shoes contain asbestos, which has been determined to be a cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.

REMOVAL & INSTALLATION



  1. Remove the hub cap and loosen the lug nuts.
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  3. Raise the front of the vehicle and support it on jackstands.
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  5. Remove the lug nuts, tire and wheel.
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  7. Remove the axle hub grease cap.
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  9. Remove the cotter pin, and then loosen the hub nut. When the nut is close to the end of the spindle, pull the drum and hub assembly toward you. If it does not slide off the brake shoes, loosen the brake shoe adjuster star wheels. Remove the spindle nut, brake drum and hub, the washer, and the wheel bearings.
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Be careful not to get foreign matter in the wheel bearings. The heavy coating of grease will hold many particles. These will damage the bearings.

  1. Inspect the brake drum as outlined below.
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CAUTION
Do not depress the brake pedal with the brake drum removed.

  1. Installation is the reverse of the removal procedure. Always use a NEW cotter pin upon installation. For instructions on preloading the front wheel bearings, see the appropriate section.
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INSPECTION



  1. Clean the drum with a rag and a little paint thinner.
  2.  


CAUTION
Do not blow the brake dust out of the drum with compressed air or lung power. Brake linings contain asbestos, a known cancer causing agent.

  1. Inspect the drum for cracks, grooves, scoring and out-of-roundness.
  2.  
  3. Light scoring may be removed with fine emery paper, Heavy scores or grooves will have to be removed by having the drum turned on a lathe. This can be done at many automotive machine shops and some service stations.
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  5. Before cutting the drum it must be measured to determine whether or not the inside dimension of the drum is within limitations after removing the score marks.
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  7. Check the drum for concentricity. An inside micrometer is necessary for an exact measurement, so unless this tool is available, the drum should be taken to a machine shop to be checked. Any drum which is out of round will result in an inaccurate brake adjustment and other problems, and must be refinished or replaced.
  8.  

Make all measurements at right angles to each other and at the open and closed edges of the drum machined surface.

 
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