1999 Jeep Grand Cherokee Brake Service (ONLINE REPAIR MANUALS)

Master Cylinder

Except Caravan, Town & Country & Voyager

• With engine stopped, pump brake pedal four or five times to deplete vacuum in power booster.
• Disconnect brake lines at master cylinder.
• Remove ground wire from combination valve bracket.
• Remove master cylinder retaining nuts, Fig. .
• Slide combination valve bracket off cylinder mounting studs. Loosen or disconnect brake lines at rear anti-lock valve and combination valve, if required.
• Remove master cylinder.
• Reverse procedure to install. Tighten master cylinder mounting nuts and fluid line nuts as specified in Fig. .

Caravan, ...

Brake Lines & Linings

Remove one of the front wheels and inspect the brake disc, caliper and linings. The wheel bearings should be inspected at this time and repacked if necessary.

Do not get any oil or grease on the linings. It is recommended that both front wheel sets be replaced whenever a respective pad is worn or damaged. Inspect and, if necessary, replace rear brake linings also.

If the caliper is cracked or fluid leakage through the casting is evident, it must be replaced as a unit.

Brake Roughness

The most common cause of brake chatter on disc brakes is a variation in thickness o...

Master Cylinder

Except Caravan, Town & Country & Voyager

The cylinder body containing the primary and secondary pistons is made of aluminum. The removable fluid reservoir is made of nylon reinforced with glass fiber. The reservoir is the only serviceable component.

The fluid compartments of the nylon reservoir are interconnected to permit fluid level equalization. The equalization feature does not affect circuit separation in the event of a front or rear brake malfunction. The reservoir compartments will retain enough fluid to operate the functioning hydraulic circuit.

Caravan, Town & C...

These self contained vacuum hydraulic power braking units are of the vacuum suspended type. They use engine intake manifold vacuum or a vacuum pump along with atmospheric pressure for their power, eliminating the need for a vacuum reservoir. A mechanically operated control valve, with integral vacuum power diaphragms, controls the degree of brake application or release depending on amount of foot pressure applied to...

Removal

Front

• Unfasten caliper as outlined under "Caliper Service." It is not necessary to disconnect brake hose from caliper. Support caliper at all times to prevent brake hose damage.
• Remove outboard brake pad from caliper by pressing one end inward to release pad lug.
• Rotate shoe upward until spring clears caliper.
• Press other end of pad inward to release other lug, then rotate upwards and out of caliper.
• Grasp ends of inboard pad and tilt outward to release springs from caliper piston.
• Clean caliper interior using clean shop cloths. Do not use compressed air, as damage to du...

Service Brakes

• Raise and support vehicle.
• Remove access slot cover at rear of brake support plate.
• Using a suitable brake adjustment tool, rotate adjuster star wheel while turning wheel and tire until brake locks.
• Insert a suitable thin tool through adjustment hole and disengage automatic adjuster arm from star wheel, then back off screw approximately one turn.
• Install access slot cover, then lower vehicle and check for proper brake operation.
• Drive vehicle in Reverse, make 10-15 firm brake applications with one forward stop between each reverse application to equalize adjustment.

Parking ...