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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Jeep Grand Cherokee (from 1993 to 1999, the year of issue)

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Jeep Grand Cherokee
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Brakes
general information
Anti-lock braking system (ABS) - the general information
Replacing disc brake pads
Removal, major repairs and installation of supports of disk brake
Condition check, removal and installation of a brake disk
Replacement of boots of drum brake
Removal, major repairs and installation of wheel cylinders
Removing and installing the combined valve (regulator)
Removal and installation of the main brake cylinder
Check and replacement of brake hoses and lines
Bleeding brake system
Functioning check, removal and installation of the vacuum brake booster
Check operation, removal, installation and adjustment of the gauge-switch of stoplights
Adjusting the parking brake
Replacing the parking brake cable
Replacement of boots of a lay brake (disc brakes rear wheels)
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Replacement of boots of drum brake



Replacement drum brake shoes must be made simultaneously on both wheels - in any case, not one! In addition, you should pay attention to the fact that the dust generated brakes in their work can contain unhealthy asbestos. In no case do not blow off the dust from the surfaces of the components brake compressed air and do not inhale it. The work is best done in a protective respiratory mask. In no case do not clean the brake components petroleum solvents or gasoline - use proprietary tools to clean the brakes!


Along with the shoes and be sure to change the pressure and return springs. Due to cyclic thermal loads, which are continuously subjected to the spring, after a certain time, they begin to lose developed power, which leads to privolakivaniyu shoes and the drums faster wear of working surfaces. When replacing brake shoes of rear wheels, only use proprietary and marked with the brand name components approved for sale by the local authorities.


PERFORMANCE ORDER

  1. Loosen the nuts of the rear wheels, Poddomkratte back of the car and establish it on props. Lock the front wheels with wedges to prevent rolling of the vehicle.
  2. Release the parking brake.
  3. Remove the wheel and brake drum (Head of Adjustment and routine maintenance).

All four of the shoe both rear brakes should be changed at the same time, however, to prevent accidental entanglement parts work with each of the mechanisms in turn. In addition, the second at the same time can serve as a model of correct assembly in the event of any doubt.

  1. To check the status of the procedures and the replacement of the brake shoe, the scheme shown in the illustrations below. Try not to disturb the order of actions and closely acquainted with the notes to pictures.

If the drum does not lend itself to removal from a pin axis and the shoe assembly (Head of Adjustment and routine maintenance), make sure that the parking brake is fully released, then soak the joint between the hub and drum penetrating oil. Let the oil soak time, then try to remove the drum. If the attempt fails again, it is necessary to compress the brake shoes. To do this, first, remove the plug from the board of the brake mechanism. After removing the plug, move the selector on the adjustment gear wheel by means of a narrow screwdriver and a second narrow screwdriver to turn the wheel so that the shoes away from the walls of the brake drum (see. Now, the drum must be free to withdraw.


Assemble the rear drum brake - Left-Hand Mechanism.

  1. Before removing any of the components of the brake mechanism clean assembly using proprietary tools and dry it - install the drain container under the brake mechanism to collect washes dirt - DO NOT blown away brake dust COMPRESSED AIR!
  1. Pull the lever knob and turn the adjustment the gear to remove the shoes from the walls of the drum.
  1. Pull back the cable self-adjusting device and push the control lever back, detaching it from the rear brake shoe.
  1. Remove the reference pin of both return springs (front and rear) shoes - the picture shows a tool for removing spring (ask in shops of automobile accessories), the use of which can significantly facilitate the implementation of the procedure.
  1. Remove the bearing pin cable samoregulyatora and finger plate.
  1. Disconnect from the rear of the shoe return spring and the cable guide.
  1. Remove the retaining spring finger and the front of the shoe, ..

... Then separate front shoe, and the adjusting screw on the brake shield.

  1. Remove the parking brake strut.
  1. Remove the retaining finger and back of the shoe, then separate from the shield shoe brake - hooking lever, remove the clamp executive handbrake lever with axial fingers ..

... Then remove the lever from the rear of the shoe - try not to lose the spring washer.

  1. Grease the contact surface of the brake shoe (arrow) with high temperature grease.
  1. Connect the new shoe to the executive parking brake lever, set the spring washer and retaining clip, bringing his lips with pliers.
  1. Install the rear shoe retaining spring with the brake shield, then place the end of the parking brake strut in response recess (arrow).
  1. Lubricate the adjusting screw high-temperature grease.
  1. Press the front shoe to a brake board, then install the retaining spring - make sure that the parking brake Front wheel cylinder and pushers engaging the slotted shoes.
  1. Set the plate bearing pin ...

... And a cable samoregulyatora.

  1. Pass the end of the return spring back through the cable guide shoe, catching him by the hole in the shoe, and then tighten the spring, securing it on the support finger.
  1. Install the return spring of the front of the shoe - the application shown in the picture special tools greatly facilitate the assembly (ask in shops of automobile accessories).
  1. Hook the spring lever knob with a hole for the bottom of the front of the shoe.
  1. Hook the spring lever knob and the cable lever and pull the rope down and back, threading the hook arm into the hole in the second shoe.
  1. Tap assembly, ensuring correct centering it on a brake board.
  1. Before replacing the drum, check for cracks, fissures, scratches and signs of overheating (local color change) its surface. If the defects can not be restored by treatment with sandpaper, the drum must be delivered to the workshop for service centers groove.

The drafters of the Guidelines recommend taking groove drums, regardless of their apparent condition each time the rear-wheel brakes. If drums are worn so that they can not be repaired by the bore repair without exceeding the allowable diameter (stamped on the drum), they must be replaced. In an extreme case, if you prefer to do without the drums groove, at least remove their working surfaces polished using sandpaper of medium size, making it the working surface of the drum rotational cyclic movement.


The maximum diameter of the drum is usually stamped (or cast) on his body.

  1. Install the drum flange of the bridge. Remove the rubber plug from the brake shields.
  2. Insert in the hole in the panel a narrow screwdriver or adjusting tool and turn the gear until you get a weak pressing shoe to the working surface of the drum.
  1. Insert a narrow screwdriver or adjusting tool into the hole in the brake shield and rotate the wheel controller as shown, seeking a weak pressing shoe to the working surface of the drum; then pass through the hole narrow screwdriver, move the selector knob on the wheel and turn it in exactly the opposite direction to release shoes (shoe should begin to rotate freely).
  1. Turn the wheel in the opposite direction just enough to allow the drum began to rotate freely on the axis. To do this, first pull the lever on the control wheel with a screwdriver (otherwise it will not rotate).
  2. Repeat the procedure for adjusting the second drum and replace the cork brake shields.
  3. Install the wheels and their fastening nut, and then lower the car on the earth. Tighten the wheel nuts with demanded effort (Head of Adjustment and routine maintenance).
  4. For the final self-adjusting brakes made several braking of the car when driving both front and rear. As a result of this procedure is to be achieved the proper functioning of the brake pedal.
  5. Before you start working with your car, check up serviceability of functioning of brakes.




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