1996 Dodge B2500 VAN 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 degree of brake application or release depending on amount of foot pressure applied t...

Service Brake

Except FWD Models & Ram 50

Self-Adjusting Brakes

These brakes have self-adjusting shoe mechanisms that ensure correct lining to drum clearances at all times. The automatic adjusters operate only when the brakes are applied as the car is moving rearward.

Although the brakes are self-adjusting, an initial adjustment is necessary when the brake shoes have been relined, replaced or when the length of the star wheel adjuster has been changed during some other service operation.

Frequent usage of an automatic transmission forward range to halt reverse vehicle motion may prevent t...

Brake Drums

Any time the brake drums are removed for brake service, the braking surface diameter should be checked with a suitable brake drum micrometer at several points to determine if they are within the safe oversize limit stamped on the brake drum outer surface. If the braking surface diameter exceeds specifications, the drum must be replaced. If the braking surface diameter is within specifications, drums should be cleaned and inspected for cracks, scores, deep grooves, taper, out of round and heat spotting. If drums are cracked or heat spotted, they must be replaced. Minor scor...

Brake System Bleed

The anti-lock brake system must be bled any time air enters the hydraulic system. It is important to note that excessive air in the brake system may set a primary pressure diagnostic trouble code in the control module.

Pressure or manual bleeding procedures can be used when bleeding the ABS system after hoses or brake lines have been disconnected. Bleeding the ABS hydraulic system is also necessary after replacement of the hydraulic assembly or wheel brakes. During bleeding procedures, ensure the brake fluid level remains close to the Full mark on the reservoir.

T...

Master Cylinder

Front & Rear Split Systems

When the brake pedal is depressed, both the primary (front brake) and the secondary (rear brake) master cylinder pistons are moved simultaneously to exert hydraulic fluid pressure on their respective independent hydraulic systems. The fluid displacement of the two master cylinders is proportioned to fulfill the requirements of each of the two independent hydraulic brake systems.

If a failure of the rear (secondary) brake system should occur, initial brake pedal movement causes the unrestricted secondary piston to bottom in the master cylinder ...

Chrysler

Proportioning Valve

Caravan, Town & Country & Voyager

These models use a proportioning valve and pressure differential switch, or a combination valve. When a premature rear wheel skid is obtained during braking, it may be an indication that fluid pressure to rear brakes is above a desired output and/or a malfunction has occurred within the valve. At this time, the valve unit should be tested as follows:

• Remove actuator assembly adjustment nut, Fig. , then disconnect assembly from valve lever and remove.
• Install gauge and Tee from line pressure set No. C-4007, or equivale...