The research valve or proportioning valve helps prevent rear brake lock-up in sudden stops.
Chrysler Jeep has produced the Wrangler account of its noted off-road vehicle because 1987. The 1994 Wrangler has the YJ reputation and is available with either an inline four cylinder or inline six cylinder engine. The hydraulic transaction is separated into two circuits to preserve braking capability whether a brake wrinkle leaks in one trail. The skilled cylinder has a reservoir for Everyone method. A sensor in the trial valve meeting signals a warning cloudless whether one or the other order fails. The trial valve or proportioning valve balances front and rear braking in sudden stops and contains a sensor and switch to warn of failure of a hydraulic succession.
Instructions
Remove the Valve
1. Allot the combination or trial valve under the skillful cylinder. Position a plastic container under the valve to grip brake fluid and be confident to encompass all painted surfaces under and enclosing the valve with plastic or newspapers in example some brake fluid spills.
2. Loosen and disconnect the hydraulic lines from the valve using a wrench. Straightaway plug the lines with plastic bags to prevent dirt or other contaminants entering they hydraulic operation.
Operate the brakes indefinite times with the engine off to receive rid of any residual vacuum in the lines.9. Pull back the clips on the skillful cylinder and remove the incorporate.
Loosen and remove the bolt that attaches the valve to the mounting bracket. Remove the valve from the engine compartment.
Install a Valve
5. Position the valve in settle on the mounting bracket and install and tighten the mounting bolts with a wrench.
6. Attach the electrical connector to the impulse differential switch.
7. Attach the hydraulic lines to the valve target and tighten with a wrench.
Bleed the Hydraulics
8.3. Pull the electrical connector from the front of the valve item. This is the strength differential switch.4.
Fill the cylinder with brake fluid and lay the contain back on and cause up the clips.
10. Loosen the lug nuts on all four wheels with a lug wrench. Elevate the vehicle up with a jack and lower onto jack stands. Stop removing the lug nuts on all four wheels and remove the wheels.
11. Loosen the bleeder valve slightly on the correct rear rotate then tighten it so it is blameless snug. Place the rubber tube on the location of the bleeder valve and levy the yawning limitation of the tube in the plastic container. Beget confident there is a half inch or so of brake fluid in the container. Inspire an assistant to pump the brakes several times then hold the brake pedal down. Open the bleeder valve just slightly and observe the fluid running out the tube. Air bubbles should come out of the tube with the fluid. When the fluid slows down close off the valve with a wrench. Tighten the bleeder valve.
12. Go to the left rear wheel and repeat the bleeding procedure, watching for air bubbles and closing the valve again when the fluid and air bubbles stop coming out. Go next to the right front wheel and finish with the left front wheel. Check the fluid in the master cylinder each time and top it up as required with brake fluid. At the end of this operation the brake pedal should feel solid, not squishy or spongy.
