2500 4x4 Pickup V8-360 5.9L VIN 5 Magnum (1994)
a. Bleed first wheel brake unit as follows. Start at left rear wheel.
b. Open caliper or wheel cylinder bleed fitting 1/2 to 3/4 turn.
c. Have helper press and hold brake pedal to floor.
d. Tighten bleed fitting and have helper release brake pedal.
e. Continue bleeding operation until fluid flowing into bleed fluid container is clear and free of bubbles.
10. Check and top off master cylinder reservoir fluid level. Then verify proper brake operation before moving vehicle.
11. Repeat bleeding procedure if either brake warning light illuminates, or if pedal is still spongy.
Pressure/Vacuum Brake Bleeding
The content of this article reflects the changes called out by TSB 05-03-94.
PRESSURE/VACUUM BRAKE BLEEDING
1. If vacuum bleeding equipment is used, no special precautions are required. However, if pressure bleeding equipment will be used, metering valve
stem in combination valve must be either pressed inward, or held outward slightly in order to bleed front brakes. Stem can be held open, or pressed
inward with clip or by hand
2. Fill pressure bleed tank if necessary.
3. Purge air from bleed tank and lines before proceeding.
4. Clean master cylinder reservoir and filler caps thoroughly.
5. Connect vacuum equipment to cylinder and/or wheel units as described in manufacturers instructions.
6. Remove master cylinder filler caps and install pressure hose adapter in place of caps. A suitable adapter will usually be available from tank
manufacturer.
7. Connect bleed tank pressure hose to adapter.
8. Bleed master cylinder first, rear antilock valve second, combination valve third and front antilock valve fourth. Then proceed to wheel brake
bleeding in following steps.
NOTE: A special procedure is required to bleed a new front antilock valve. Refer to the procedure described in the manual bleeding procedure.
9. Bleed rear wheel brake units as described in manual bleeding procedure.
10. Bleed front wheel brake units as described in manual bleeding procedure. Use clip tool or have helper hold metering valve stem open by pressing
valve stem inward slightly. Amount of valve stem movement needed to hold valve open is quite modest. Do not use excessive force.
11. Remove pressure bleeding equipment and top off master cylinder reservoir. Verify firm brake pedal before moving vehicle. Repeat bleeding
procedure if system warnmg lights come on, remain on, or if pedal is still spongy.
Manual Bleeding
RWAL MANUAL BRAKE BLEEDING PROCEDURE
1. If master cylinder has been overhauled or a new cylinder will be installed, bleed cylinder on bench before installation. This shortens time needed
to bleed system and ensures proper cylinder operation.
2. Wipe master cylinder reservoir and filler caps clean with shop towels. Use Mopar brake cleaner if exterior of reservoir and filler caps are
extremely dirty.
3. Remove reservoir filler caps and fill reservoir with Mopar, or equivalent DOT 3 brake fluid.
4. Open all caliper and wheel cylinder bleed screws.
5. Close bleed screws when fluid starts flowing from each bleed screw.
6. Top off master cylinder reservoir again.
7. Bleed brakes in the following order:
-
Master cylinder
-
Combination valve
-
Rear antilock valve
-
Right rear wheel
-
Left rear wheel
-
Right front wheel
-
Left front wheel
8. Observe following precautions during bleeding procedure:
-
Do not pump brake pedal at any time while bleeding. Air in system will be compressed into small bubbles that are distributed throughout
hydraulic system. This will make a second and third bleeding operation necessary.
-
Bleed only one valve, or wheel brake unit at a time and use a bleed hose on each wheel cylinder and caliper bleed screw.
