2008 Jeep Patriot Brake Service (ONLINE REPAIR MANUALS)

The only serviceable power brake booster components are the vacuum hose and the check valve. The power brake booster must be serviced as an assembly. If diagnosis indicates a power brake booster fault condition, the unit must be replaced as an assembly.

Replacement

Caravan & Town & Country

• With engine stopped, pump brake pedal four or five times to deplete power booster vacuum.
• Disconnect both battery cables, then remove battery thermo guard and battery from tray.
• Remove air inlet resonator and hoses as an assembly from throttle body and air cleaner housing.
• Remove coolant fi...

Caravan & Town & Country

• Raise and support vehicle, then remove wheel and caliper as outlined under . Support caliper at all times to prevent brake hose damage.
• Slide brake rotor off hub.
• Reverse procedure to install. Clean brake rotor with alcohol or other suitable solvent.

Commander

Front

• Raise and support vehicle using suitable lift or jack.
• Remove tire and wheel assembly.
• Remove caliper as outlined in .
• Secure caliper anchor assembly using suitable wire.
• Remove and discard O-ring securing disc brake rotor on hub.
• Remove rotor from hub and bearing.
• Reverse procedure to install, noting the...

Caravan & Town & Country

Refer to for caliper replacement procedures.

Disassemble

• Remove caliper from adapter and rotor as outlined under . Do not disconnect brake hose from caliper. Support caliper at all times to prevent brake hose damage.
• Position caliper away from rotor to prevent brake fluid spillage on machined surface, then place a small block of wood between caliper fingers to prevent piston damage during removal.
• Gently depress brake pedal to force caliper piston out of bore, then secure brake pedal at any position below one inch of pedal travel to prevent master cylinder br...

The Anti-Lock Brake System (ABS) prevents wheel lock-up by monitoring wheel speed and altering pressure to the wheels. This is accomplished using an anti-lock brake module, power brake hydraulic booster, electric pump, accumulator, three channel modulator and wheel speed sensors.

In the event of emergency braking, monitors will read individual wheel speed so that maximum braking effectiveness can be maintained at all times. As wheel speed...

These vehicles are equipped with dual piston calipers, sliding single piston systems, single non-metallic calipers, floating caliper-single piston or single piston caliper mounted disc brake systems.

Upon brake application, fluid pressure exerted against the caliper piston increases equally in all directions, creating the same pressure in the caliper bore and on the piston.

Press...

Caravan & Town & Country

Front

Removal

• Raise and support vehicle.
• Remove front wheel and tire assemblies.
• Remove two caliper-to-knuckle attaching bolts, then remove caliper by sliding away from adapter and lifting off rotor, Fig. . Support caliper firmly to prevent weight of caliper from damaging flexible hose.
• Remove outboard pad by prying pad retaining clip over raised area of caliper, then sliding pad down and off of caliper.
• Pull inboard pad away from caliper piston, until springs release from piston.

Installation

• Inspect piston seal for leaks and for ruptures in piston dust boot. ...