AMC Coupes/Sedans/Wagons 1975-1988 Repair Information

Wheel Cylinders

Print

OVERHAUL



See Figures 1 through 7

Click image to see an enlarged view

Fig. Fig. 1: Exploded view of common wheel cylinder components



Click image to see an enlarged view

Fig. Fig. 2: On front drum brakes, remove the brake line from the brake hose ...



Click image to see an enlarged view

Fig. Fig. 3: ... then remove the brake hose retainer clip



Click image to see an enlarged view

Fig. Fig. 4: On rear drum brakes, it is only necessary to remove the brake line from the wheel cylinder



Click image to see an enlarged view

Fig. Fig. 5: Loosen the brake hose-to-wheel cylinder nut ...



Click image to see an enlarged view

Fig. Fig. 6: ... then disconnect the brake hose from the wheel cylinder



Click image to see an enlarged view

Fig. Fig. 7: Unfasten its retaining bolts and remove the wheel cylinder from the backing plate

  1. Raise the vehicle on a hoist and remove the wheel and drum from the brake to be serviced.
  2.  
  3. Remove the brake shoes and clean the backing plate and wheel cylinder.
  4.  
  5. Disconnect the brake line from the brake hose. Remove the brake hose retainer clip at the frame bracket and remove the hose from the wheel cylinder. (On the rear brakes it will only be necessary to remove the line from the cylinder).
  6.  
  7. Remove the cylinder mounting bolts and remove the cylinder.
  8.  
  9. Remove the boots from the cylinder ends and discard. Remove the pistons, remove and discard the seal cups, and remove the expanders and spring.
  10.  
  11. Inspect the bore and pistons for damage or wear. Damaged pistons should be discarded, as they cannot be reconditioned. Slight bore roughness can be removed using a brake cylinder hone or crocus cloth. (Cloth should be rotated in the bore under finger pressure. Do not slide lengthwise.) Use only lint free cloth for cleaning.
  12.  
  13. Clean the cylinder and internal parts using only brake fluid or denatured alcohol.
  14.  
  15. Insert the spring expander assembly. Lubricate all rubber parts using only fresh brake fluid.
  16.  
  17. Install new cups with the seal lips facing inward.
  18.  
  19. Install the pistons and rubber boots. Install the cylinder on the car in the reverse order or removal. Bleed the cylinder (see the preceding `Bleeding' information).
  20.  

 
label.common.footer.alt.autozoneLogo