Question about 2006 Dodge Caravan
Believe it or not, there is STILL more air in the wheel cyclinders or the calipers. This takes a great deal of patience and time to get right. Try bleeding the rears without the engine running. This will be a little harder but you'll be able to hear your helper and vice-versa. Plus you'll be able to hear when the air from the lines is fully exhausted. Thanks, and best of luck, Dana P.S. the brake pedal will feel much firmer without the engine running, don't be fooled, you'll just have to push harder.
Posted on Oct 02, 2009
Did you bench bleed the master cylinder? (procedure listed below)
The Abs Hydraulic control unit needs to be bled with an abs capable scan tool.
Verify that you have a good source of vacuum to the brake booster.
Brake Bleeding: Service and Repair
Master Cylinder Bleeding
MASTER CYLINDER BLEEDING
CAUTION: When clamping master cylinder in vise, only clamp master cylinder by its mounting flange. Do not clamp master cylinder piston rod,
reservoir, seal or body.
1. Clamp master cylinder in a vise.
NOTE: Use correct bleeder tubes when bleeding master cylinder. Master cylinder outlet ports vary in size and type depending on whether
master cylinder is for a vehicle equipped with ABS or not. ABS equipped master cylinders require the additional use of ISO style flare adapters
supplied in Special Tool Package 8822 to be used in conjunction with Bleeder Tubes, Special Tool Package 8358.
2. Attach special tools for bleeding master cylinder in the following fashion:
a. For non-ABS control equipped master cylinders, thread a Bleeder Tube, Special Tool 8358-1, into each outlet port. Tighten each tube to 17
Nm (145 inch lbs.) torque. Flex bleeder tubes and place open ends into mouth of fluid reservoir as far down as possible (Fig. 47).
b. For ABS equipped master cylinders, thread one Adapter, Special Tool 8822-2, in each outlet port. Tighten Adapters to 17 Nm (145 inch lbs.)
torque. Next, thread a Bleeder Tube, Special Tool 8358-1, into each Adapter. Tighten each tube to 17 Nm (145 inch lbs.) torque. Flex
bleeder tubes and place open ends into mouth of fluid reservoir as far down as possible (Fig. 47).
NOTE: Make sure open ends of bleeder tubes stay below surface of brake fluid once reservoir is filled to proper level.
3. Fill brake fluid reservoir with Mopar brake fluid or equivalent conforming to DOT 3 (DOT 4 and DOT 4+ are acceptable) specifications. Make
sure fluid level is above tips of bleeder tubes in reservoir to ensure no air is ingested during bleeding.
4. Using a wooden dowel as a pushrod (Fig. 47), slowly depress master cylinder pistons, then release pressure, allowing pistons to return to released
position. Repeat several times until all air bubbles are expelled. Make sure fluid level stays above tips of bleeder tubes in reservoir while
5. Remove bleeder tubes from master cylinder outlet ports, then plug outlet ports and install fill cap on reservoir.
6. Remove master cylinder from vise.
7. Install master cylinder on vehicle.
Brake Bleeding: Service and Repair
Base Brake System
BASE BRAKE BLEEDING
NOTE: This bleeding procedure is only for the vehicle's base brakes hydraulic system.
CAUTION: Before removing the master cylinder cover, thoroughly clean the cover and master cylinder fluid reservoir to prevent dirt and other
foreign matter from dropping into the master cylinder fluid reservoir.
NOTE: The following wheel sequence should be used when bleeding the brake hydraulic system. The use of this wheel sequence will ensure
adequate removal of all trapped air from the brake hydraulic system.
- Left Rear Wheel
- Right Front Wheel
- Right Rear Wheel
- Left Front Wheel
NOTE: When bleeding the brake system, some air may be trapped in the brake lines or valves far upstream, as much as ten feet from the bleeder
screw (Fig. 1). Therefore, it is essential to have a fast flow of a large volume of brake fluid when bleeding the brakes to ensure all the air gets out.
The brakes may be manually bled or pressure bled.
MANUAL BLEEDING PROCEDURE
NOTE: Correct manual bleeding of the brakes hydraulic system will require the aid of a helper.
NOTE: To adequately bleed the brakes using the manual bleeding procedure the rear brakes must be correctly adjusted. Prior to the manual
bleeding of the brake hydraulic system, correctly adjust the rear brakes.
1. Pump the brake pedal three or four times and hold it down before the bleeder screw is opened.
2. Push the brake pedal toward the floor and hold it down. Then open the left rear bleeder screw at least 1 full turn. When the bleeder screw opens
the brake pedal will drop all the way to the floor.
CAUTION: Just cracking the bleeder screw often restricts fluid flow, allowing only a slow, weak fluid discharge of fluid. This practice will NOT
get all the air out. Make sure the bleeder is opened at least 1 full turn when bleeding.
3. Release the brake pedal only after the bleeder screw is closed.
4. Repeat steps 1 through 3, four or five times, at each bleeder screw in the proper sequence. This should pass a sufficient amount of fluid to expel
all the trapped air from the brake system. Be sure to monitor the fluid level in the master cylinder, so it stays at a proper level so air will not enter
the brake system through the master cylinder.
5. Check pedal travel. If pedal travel is excessive or has not been improved, enough fluid has not passed through the system to expel all the trapped
air. Continue to bleed system as necessary.
6. Perform a final adjustment of the rear brake shoes (when applicable), then test drive vehicle to be sure brakes are operating correctly and that
pedal is solid.
Posted on Oct 02, 2009
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Posted on Jan 02, 2017
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