2007 Dodge Grand Caravan Brake Service (ONLINE REPAIR MANUALS)

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...

Master Cylinder/Power Booster Test

• Start engine and inspect booster vacuum hose connections for leaks.
• Stop engine and shift transmission into neutral.
• Pump brake pedal until all vacuum reserve in booster is depleted.
• Press and hold brake pedal under light foot pressure. Pedal should hold firm. If it falls away master cylinder is faulty.
• Start engine and note pedal action. Pedal should fall away slightly under light foot pressure, then hold firm.
• If no pedal action is felt, the power booster, vacuum supply or vacuum check valve are faulty. Proceed to "Power Booster Vacuum Test."
• If p...

Master Cylinder

Except Caravan & Town & Country

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 fault. The reservoir compartments will retain enough fluid to operate the functioning hydraulic circuit.

Caravan & Town & Country

The body...

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

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. ...