Chrysler Concorde/Intrepid/LHS/New Yorker/Vision 1993-1997

Wheel Cylinders

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REMOVAL & INSTALLATION



See Figure 1



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Fig. Fig. 1: Exploded view of the rear wheel cylinder disassembled

  1. Loosen the lug nuts on the rear wheel being worked on.
  2.  
  3. Raise the vehicle and support safely. Remove the rear wheel and brake drum.
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  5. Remove the rear hub and bearing unit dust cap, cotter pin, nut retainer and wave washer. Discard the old cotter pin.
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  7. Remove the hub and bearing assembly retaining nut and washer from the rear spindle.
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  9. Remove the hub and bearing assembly from the spindle.
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  11. Remove the brake shoe assembly from the rear brake support plate.
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  13. Remove the brake hose bracket from the support plate.
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  15. Since the underbody components are subject to rust and corrosion, often the brake line connection to the wheel cylinder is rusty and seized. You may break the line when attempts are made to disconnect it from the wheel cylinder. Take time to wire brush the brake line tube and fitting nut at the back of the wheel cylinder. Some emery cloth can be used to clean the rust where the brake line goes into the fitting nut. Apply a generous amount of penetrating oil before attempting to loosen the brake line fitting nut. At this time, inspect the condition of the flexible part of the rear wheel cylinder brake line to determine if it is still serviceable. If cracked or worn, replace this brake line assembly. Using a line wrench, disconnect the brake hose fitting nut from the wheel cylinder. Plug the open end of the brake hose to prevent fluid loss or system contamination.
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  17. Remove the rear wheel cylinder attaching bolts and pull the wheel cylinder off the brake support plate.
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  19. Clean all parts well. If the wheel cylinder was removed to correct a fluid leakage complaint, carefully clean and inspect all components. Brake shoe linings contaminated by brake fluid must not be reused. Always install new brake shoes as an axle set, both rear wheels at once. New brake hardware and return springs are always recommended. Make sure the adjuster is free and operates correctly. This is also a good time to check the parking brake cable assemblies and operation. Frozen or sticking brake cables must be replaced (one at a time, or connection to equalizer will be difficult). Install all brake components that were removed, using new replacement parts as required. Inspect the inside of the brake drum. Most brake drum wear can be removed by proper machining. If the drum inside diameter is beyond maximum limits, usually marked on the drum, a replacement drum must be installed.
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To install:
  1. Install the wheel cylinder O-ring onto the wheel cylinder.
  2.  
  3. Install the wheel cylinder onto the brake support plate. Tighten the wheel cylinder mounting bolts to 6 ft. lbs. (8 Nm).
  4.  
  5. Reconnect the brake hose fitting to the wheel cylinder, but do not tighten.
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  7. Install the brake hose bracket to the support plate. Tighten the brake hose fitting, at the wheel cylinder, to 13 ft. lbs. (17 Nm).
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  9. Install the brake shoe assembly back onto the support plate. Install the brake drum.
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  11. Install the hub and bearing assembly onto the rear spindle.
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  13. Install the washer and retaining nut. Tighten the retaining nut to 124 ft. lbs. (168 Nm).
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  15. Install the wave washer, nut retainer and a new cotter pin onto the spindle. Install the hub and bearing assembly dust cap.
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  17. Install the brake drum onto hub.
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  19. Bleed the entire brake system and refill the master cylinder to the appropriate level using DOT 3 type brake fluid only.
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  21. Install the rear wheels and hand-tighten the lug nuts.
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  23. Lower the vehicle and tighten the lug nuts, in a star pattern sequence, to 95 ft. lbs. (129 Nm).
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  25. Pump the brake pedal several times to reach the final adjustment to the brake shoes.
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  27. Test drive the vehicle, with caution, to ensure proper brake system function.
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