Combination Valve - Jeep 1997 Grand Cherokee Service Manual

BRACKET BRAKE PEDAL AND PUSH ROD PIN ASSEM- BLY BUSHING (FOR PIN) DASH PANELBOOSTER PUSH
ZG
REMOVAL AND INSTALLATION (Continued)
Fig. 20 Brake Pedal Mounting
(9) Check and adjust brakelamp switch if neces-
sary.

COMBINATION VALVE

REMOVAL
(1) Remove brake lines that connect master cylin-
der to combination valve (Fig. 21).
(2) Disconnect brake lines that connect combina-
tion 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 disen-
gaged.
(4) Remove nuts attaching combination valve
bracket to booster studs and valve bracket off booster
studs (Fig. 22).
Fig. 21 Combination Valve Brake Lines
BOOSTER LOCK NUTS PUSH ROD RETAINER CLIP 39 N·m (29 ft. lbs) ROD FLOORPAN BOOSTER DER/BRAKE MASTER CYLIN- ASSEMBLY FWD BOOSTER STUD CYLINDER ATTACHING VALVE BRACKET NUTS (2)
Fig. 22 Combination Valve Bracket
INSTALLATION
(1) Position valve bracket on booster studs and
tighten bracket attaching nuts to 18 N·m (155 in.
lbs.).
(2) Align and start all four brake line fittings in
combination valve by hand to avoid cross threading.
Then tighten fittings just enough to prevent leakage.
(3) Connect wire to differential pressure switch in
combination valve.
(4) Tighten brake line fittings at master cylinder
just enough to prevent leakage.
(5) Attach HCU solenoid harness connectors to
combination valve bracket.
(6) Bleed brakes.
MASTER CYLINDER
REMOVAL
(1) Remove brake lines from master cylinder.
(2) Remove combination valve.
(3) Remove nuts that attach master cylinder to
booster studs (Fig. 23). Retain nuts as they are
special locking types.
Fig. 23 Master Cylinder Mounting
(4) Remove master cylinder from booster.
VALVE BRACKET COMBINA- TION VALVE
BRAKES 5 - 15