1990 Dodge W250 Pickup Brake Service (ONLINE REPAIR MANUALS)

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 thi...

9, 10 & 11 INCH DRUMS

Removal

• Raise and support rear of vehicle, then remove tire and wheel assembly.
• Remove brake drum. If brake lining is dragging on brake drum, back off brake adjustment by rotating adjustment screw. If brake drum is rusted or corroded to axle flange and cannot be removed, lightly tap axle flange to drum mounting surface with a suitable hammer.
• Using brake spring pliers or equivalent, remove primary and secondary shoe return springs, Fig. .
• Remove automatic adjuster cable from anchor plate, then unhook from adjuster lever.
• Remove adjuste...

The electronic control module in this system has the capability of generating and storing fault codes. If a fault is detected, the system will illuminate the amber anti-lock warning lamp and set a fault code. When a fault code is set, the amber anti-lock warning lamp will illuminate. In most cases, the red brake warning lamp will also light.

When a problem in the system is suspected, preliminary diagnosis should begin with a fluid level check and a visual inspection of the electrical and hydraulic connections in the system. If obvious faults are not found, a road test will he...

CHRYSLER

FRONT WHEEL DRIVE MODELS

• Disconnect and plug brake tubes from master cylinder. Cap master cylinder ports.
• Remove master cylinder attaching nuts.
• Remove master cylinder from power brake unit.
• Reverse procedure to install. Master cylinder should be bench bled before installation, using bleeding tubes tool No. C-4546 or equivalent.

RAM RAIDER & RAM 50

• Disconnect the brake tube from the master cylinder.
• On models equipped with manual brakes, remove clevis pin connecting pushrod to brake pedal.
• Remove the attaching bolts from the toe-board or power brake assembly.
• Reverse pro...

REMOVAL

• Remove caliper assembly as outlined above.
• Remove outboard pad by prying between the pad and the caliper fingers, Fig. , since flanges on outboard pad retain caliper firmly. Caliper should be supported to avoid damage to the flexible brake hose.
• Remove inboard brake pad from the adapter, Fig. .

INSTALLATION

Remove approximately ^{1 /3} of the brake fluid out of the reservoir to prevent overflow when pistons are pushed back into the bore.

• With care, push piston back into bore until bottomed.
• Install new outboard pad in recess of caliper. No freeplay should exist between brake p...

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