Nissan 240SX/Altima 1993-1998 Repair Guide

Brake Drum

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REMOVAL & INSTALLATION



See Figures 1, 2 and 3



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Fig. Fig. 1: Most brake drums will have the maximum safe diameter stamped or embossed into the drum. Never exceed this diameter when machining the drum



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Fig. Fig. 2: This backing plate has the brake pad dimensions stamped into it. Such information may be needed when ordering replacement brake pads



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Fig. Fig. 3: To loosen the drum from the hub, insert two bolts into the threaded holes and tighten evenly. This will press the drum off the hub

  1. Raise and support the vehicle safely.
  2.  
  3. Remove the wheels.
  4.  
  5. Insert two bolts into the threaded holes and tighten evenly to loosen the drum from the hub. This will press the drum off the hub.
  6.  
  7. Remove the drum from the hub.
  8.  

To install:
  1. Use a wire brush to clean the hub mounting surfaces, then apply a coating of anti-seize compound to the hub. This prevents the drum from rusting to the hub.
  2.  
  3. Install the drum on the hub.
  4.  

Failure to tighten the lug nuts to the proper torque in a star pattern may result in damage to the brake drum.

  1. Install the wheel and tighten the lug nuts properly.
  2.  
  3. Lower the vehicle.
  4.  

INSPECTION



Using a brake drum inside micrometer or Vernier caliper, measure the inside diameter in several places around the drum.

Compare measurements to the Brake Specifications chart. If the inside diameter is not within specifications, replace the drum.

Check that there are no cracks or chips in the braking surface. Excessive bluing indicates overheating and a replacement drum is needed.

The drum can be machined to remove minor damage and to establish a rounded braking surface on a warped drum. Never exceed the maximum oversize of the drum when machining the braking surface. The maximum inside diameter is stamped on the drum.

 
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