Power Brake Booster; Cooling System - Jeep cherokee 2000 Service Manual

XJ
REMOVAL AND INSTALLATION (Continued)
(3) Remove mounting nuts from the combination
valve bracket and remove the valve (Fig. 20).
(4) Remove mounting nuts from the master cylin-
der (Fig. 21).
(5) Remove master cylinder.
(6) Remove cylinder cover and drain fluid.
(7) If master cylinder reservoir requires service,
refer to reservoir replacement procedure in this sec-
tion.
Fig. 21 Master Cylinder
1 – BOOSTER
2 – MASTER CYLINDER
INSTALLATION
NOTE: If master cylinder is replaced, bleed cylinder
before installation.
(1) Remove protective sleeve from primary piston
shank on new master cylinder.
(2) Clean cylinder mounting surface of brake
booster.
(3) Install master cylinder onto brake booster
studs.
(4) Install mounting nuts and tighten to 17 N·m
(155 in. lbs.).
(5) Install combination valve and install mounting
nuts.
(6) Connect brake lines to master cylinder and
combination valve and tighten to 14 N·m (124 in.
lbs.).
(7) Connect differential pressure switch wire to the
combination valve.
(8) On RHD vehicles install the coolant reserve/
overflow tank. Refer to Group 7 Cooling System.
(9) Fill and bleed base brake system.

POWER BRAKE BOOSTER

REMOVAL
(1) On RHD vehicles remove the coolant reserve/
overflow tank. Refer to Group 7 Cooling System.
(2) Disconnect brake lines at master cylinder.
(3) Disconnect wire at combination valve differen-
tial pressure switch.
(4) Remove nut mounting
bracket to booster studs and remove valve.
(5) Remove nuts mounting master cylinder to
booster studs and remove cylinder.
(6) Disconnect vacuum hose from booster check
valve.
(7) Remove knee blocker under the steering col-
umn.
(8) Remove retaining clip that secures booster
push rod to brake pedal (Fig. 22).
(9) Remove nuts attaching booster to passenger
compartment side of dash panel (Fig. 23).
Fig. 22 Booster Push Rod
1 – BRAKE PEDAL
2 – BOOSTER ROD
3 – BUSHING
(10) In engine compartment, slide booster studs
out of dash panel, tilt booster upward, and remove
booster from engine compartment.
(11) Remove dash seal from booster.
INSTALLATION
(1) Install dash seal on booster.
(2) Align and position booster on dash panel.
(3) In passenger compartment, install booster
mounting nuts. Tighten nuts just enough to hold
booster in place.
(4) Slide booster push rod onto the brake pedal.
Then secure push rod to pedal pin with retaining
clip.
BRAKES 5 - 17
combination valve