Jeep CJ 1945-1970 Repair Information

Brake Shoes

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CAUTION
Brake linings may contain asbestos. Asbestos is a known cancer-causing agent. When working on brakes, remember that the dust which accumulates on the brake parts and/or in the drum contains asbestos. Always wear a protective face covering, such as a painter's mask, when working on the brakes. NEVER blow the dust from the brakes or drum! There are solvents made for the purpose of cleaning brake parts. Use them!


WARNING
Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded.

REMOVAL & INSTALLATION



See Figures 1 through 13



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Fig. Fig. 1: Exploded view of the front drum and brake shoe assembly used on 2WD models



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Fig. Fig. 2: Remove the brake drum to gain access to the brake shoes-rear brakes shown



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Fig. Fig. 3: Detach the return spring from the front (leading) brake shoe ...



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Fig. Fig. 4: ... then unhook the return spring from the rear (trailing) shoe



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Fig. Fig. 5: Allow both shoes to hang from the bottom pivot bolts



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Fig. Fig. 6: Remove the bottom front pivot bolt to remove the front brake shoe



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Fig. Fig. 7: When removing the front shoe, retain the cam washer for reassembly ...



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Fig. Fig. 8: ... then remove the pivot bolt plate and rear shoe from the backing plate



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Fig. Fig. 9: If removing the backing plate, first remove the axle shaft key ...



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Fig. Fig. 10: ... then remove the 6 backing plate retaining bolts



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Fig. Fig. 11: If necessary, use a small prytool to loosen the backing plate flange ...



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Fig. Fig. 12: ... then remove the backing plate from the axle tube flange



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Fig. Fig. 13: The front brakes are of similar design, and are removed in the same manner as rear brakes

  1. Raise and safely support the vehicle on jackstands so that all four wheels are off the ground.
  2.  
  3. On vehicles equipped with cam adjustment brakes, turn all eccentric cams to the lower side of the cam. On vehicles equipped with star wheel adjustment, turn the star adjuster all the way in.
  4.  
  5. Remove the wheels and the hubs and drums to give access to the brake shoes.
  6.  
  7. Install wheel cylinder clamps on the wheel cylinder to retain the wheel cylinder pistons in place and prevent leakage of brake fluid while replacing the shoes.
  8.  
  9. Remove the return springs with a brake spring removal tool.
  10.  
  11. On models with self-adjusters, remove the adjuster cable, cable guide, adjuster lever and adjuster springs.
  12.  
  13. Remove the hold-down clips or springs and remove the brake shoes.
  14.  
  15. Before installing the new shoes, now would be a good time to inspect the oil seals in the hubs. If the condition of the seals is doubtful, replace them. Also check the wheel cylinders for leakage. Pull back the dust covers. If there is fluid present behind the dust cover, the wheel cylinder must be rebuilt or replaced.
  16.  
  17. Clean the backing plate with a brush or cloth. Place a dab of molybdenum disulfide grease on each raised pad where the shoes rub the backing plate.
  18.  

Always replace brake shoes in axle sets. Never replace linings on only one side or just on one wheel.

To install:
  1. Install the parking brake cable and lever on the secondary shoe. Secure the lever with a washer and new U-clip.
  2.  
  3. Install the guide and self-adjuster cable on the anchor pin.
  4.  
  5. Install the shoes, one at a time, on the backing plate and secure them with the hold-down springs, pins and retainers.
  6.  
  7. Install the cross-strut and spring.
  8.  
  9. Install the star wheel adjuster, spring and lever.
  10.  
  11. Install the return springs.
  12.  
  13. Make sure that the brake shoe surfaces are clean and free from any contamination.
  14.  
  15. Perform the initial brake shoe adjustment, outlined at the beginning of this section.
  16.  
  17. Install the drums and wheels, lower the truck and check brake operation. On Jeep vehicles without self-adjusters, refer to the Adjustment procedures at the beginning of this section. On vehicles with self-adjusters, drive the Jeep in a series of alternating forward and reverse stops. Usually 10-15 full stops in reverse are sufficient.
  18.  

 
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