REMOVAL

Combination Valve Brake Lines

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1. Remove brake lines that connect master cylinder to combination valve.
2. Disconnect brake lines that connect combination valve to HCU.
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

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4. Remove nuts attaching combination valve bracket to booster studs and valve bracket off booster studs.

INSTALLATION
1. Position valve bracket on booster studs and tighten bracket attaching nuts to 17 Nm (13 ft. lbs.).
2. Align and start brake line fittings in combination valve, master cylinder, and HCU by hand to avoid cross threading.
3. Tighten brake line fittings at combination valve to 21 Nm (15 ft. lbs.).
4. Tighten brake line fittings at master cylinder to 15 Nm (11 ft. lbs.).
5. Tighten brake line fittings at HCU to 16 Nm (12 ft. lbs.).
6. Connect wire to differential pressure switch in combination valve.
7. Bleed base brake system.

REMOVAL

Combination Valve/Master Cylinder

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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

Click for full-size image

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 24 Nm (18 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 21 Nm (16 ft. lbs.).
4. Tighten brake line fittings at master cylinder to 15 Nm (11 ft. lbs.).
5. Connect wire to differential pressure switch in combination valve.
6. Bleed base brake system.

Item	Variant	Part #	Price
Hydraulic System · Pressure Metering Valve · Without ABS	Pressure Metering Valve	5083808AA	$521.00
Hydraulic System · Pressure Metering Valve · With ABS	Pressure Metering Valve	5083807AA	$0.00

Brake Proportioning/Combination Valve