Jeep WJ Grand Cherokee Parking Brake (Emergency brake)

By Jeep Experts

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The parking brakes operated by a automated tensioner mechanism constructed into the hand lever and cable system. The entrance cable is related to the hand lever and the equalizer. The rear cables hooked up to the equalizer and the parking brake shoe actuator.

A set of drum sort brake footwear are used for parking brakes. The footwear are mounted to the rear disc brake adaptor. The parking brake drum is built-in into the rear disc brake rotor.

Diagnosis and testing the parking brake

NOTE: PARKING BRAKE ADJUSTMENT IS CONTROLLED BY AN AUTOMATIC CABLE TENSIONER AND DOES NOT REQUIRE ADJUSTMENT. THE ONLY ADJUSTMENT THAT MAY BE NECESSARY WOULD BE TO THE PARK BRAKE SHOES IF THEY ARE WORN, OR WHEN THE SHOES ARE REPLACED, REMOVED FOR ACCESS TO OTHER PARTS, OR WHEN ONE OR BOTH ROTORS ARE REPLACED.

The parking brake swap is in circuit with the pink warning lamp within the sprint. The swap will trigger the lamp to light up solely when the parking brakes are utilized. If the lamp stays on after parking brake launch, the swap or wires are defective.

If the pink lamp comes on a fault has occurred within the entrance or rear brake hydraulic system.

If the pink warning lamp and yellow warning lamp come on, the digital brake distribution could also be at fault.

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In most circumstances, the precise reason for an improperly functioning parking brake (too unfastened/too tight/received’t maintain), may be traced to a parking brake part.

NOTE: THE LEADING CAUSE OF IMPROPER PARKING BRAKE OPERATION, IS EXCESSIVE CLEARANCE BETWEEN THE PARKING BRAKE SHOES AND THE SHOE BRAKING SURFACE. EXCESSIVE CLEARANCE IS A RESULT OF LINING AND/OR DRUM WEAR, DRUM SURFACE MACHINED OVERSIZE.

Excessive parking brake lever journey (typically described as a unfastened lever or too unfastened situation), is the results of worn brake footwear, improper brake shoe adjustment, or improperly assembled brake elements.

A too unfastened situation may also be attributable to inoperative or improperly assembled parking brake shoe elements.

A situation the place the parking brakes don’t maintain, will most likely be as a result of a wheel brake part.

Items to search for when diagnosing a parking brake drawback, are:

  • Brake shoe put on
  • Drum floor (in rear rotor) machined oversize
  • Front cable not secured to lever
  • Rear cable not hooked up to actuator
  • Rear cable seized
  • Parking brake lever not seated
  • Parking brake lever bind

Adjustment

Under regular circumstances, the one time adjustment is required is when the footwear are changed, eliminated for entry to different elements, or when one or each rotors are changed.

Adjustment may be made with a regular brake gauge or with adjusting software. Adjustment is carried out with the whole brake meeting put in on the backing plate.

1. Be positive parking brake lever is totally launched.

2. Raise car so rear wheels may be rotated freely.

3. Remove plug from every entry gap in brake help plates.

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4. Loosen parking brake cable adjustment nut till there may be slack in entrance cable.

5. Insert adjusting software by help plate entry gap and have interaction software in enamel of adjusting screw star wheel.

6. Rotate adjuster screw star wheel (transfer software deal with upward) till slight drag may be felt when wheel is rotated.

7. Push and maintain adjuster lever away from star wheel with skinny screwdriver.

8. Back off adjuster screw star wheel till brake drag is eradicated.

9. Repeat adjustment at reverse wheel. Be positive adjustment is equal at each wheels.

10. Install help plate entry gap plugs.

11. Adjust parking brake cable and decrease car.

12. Depress park brake lever and ensure park brakes maintain the car staionary.

13. Release park brake lever.

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