Wrangler L6-4.0L VIN S (2000)
Brake Proportioning/Combination Valve: Service and Repair
Without Antilock Brakes
REMOVAL
Combination Valve/Master Cylinder
1. Remove brake lines that connect master cylinder to combination valve.
2. Disconnect brake lines that connect combination valve to front and rear brakes.
3. Disconnect wire from combination valve switch terminal. Be careful when separating wire connector as lock tabs are easily damaged if not fully
disengaged.
Combination Valve Bracket
4. Remove nuts attaching combination valve bracket to booster studs and remove valve bracket off booster studs.
INSTALLATION
1. Position valve bracket on booster studs and tighten bracket attaching nuts to 20 Nm (15 ft. lbs.).
2. Align and start brake line fittings in combination valve and master cylinder by hand to avoid cross threading.
3. Tighten brake line fittings at combination valve to 19 Nm (14 ft. lbs.).
4. Tighten brake line fittings at master cylinder to 19 Nm (14 ft. lbs.).
5. Connect wire to differential pressure switch in combination valve.
6. Bleed base brake system.
