Chrysler 300M 2002 Service Manual page 140

LH
MASTER CYLINDER (Continued)
Fig. 73 Reservoir Sealing Grommets
1 - RESERVOIR SEALING GROMMETS
2 - MASTER CYLINDER
grommets using a rocking motion while pushing
down on reservoir.
(3) Make sure bottom of reservoir touches the top
of both sealing grommets.
(4) Install the 2 fluid reservoir to master cylinder
retaining pins (Fig. 71).
(5) Bleed and install master cylinder on vehicle.
(Refer to 5 - BRAKES/HYDRAULIC/MECHANICAL/
MASTER CYLINDER - STANDARD PROCEDURE)
INSTALLATION
CAUTION: If the master cylinder is being replaced
or has been repaired, the master cylinder must be
bled before installation. (Refer to 5 - BRAKES/HY-
DRAULIC/MECHANICAL/MASTER
STANDARD PROCEDURE)
(1) Install master cylinder on studs of power brake
vacuum booster, aligning the booster push rod with
master cylinder piston.
(2) Install the master cylinder mounting nuts (Fig.
70). Tighten the nuts to a torque of 28 N·m (250 in.
lbs.).
(3) Connect brake tubes to master cylinder pri-
mary and secondary ports. Tighten fittings to 17 N·m
(145 in. lbs.) torque.
(4) Reconnect brake fluid level switch.
(5) Check and adjust brake fluid level as necessary
using Mopar Brake Fluid or equivalent.
CAUTION: It will be necessary to bleed the entire
base hydryaulic system if the brake system has
been open to air for an excessive amount of time or
air is present in the lines.
PEDAL
DESCRIPTION
A suspended type brake pedal is used on this vehi-
cle (Fig. 74). The pedal pivots on a shaft mounted in
the pedal support bracket under the instrument
panel. The pedal also connects to the power brake
booster input rod. The pedal ratio is 3.44:1.
OPERATION
When the brake pedal is depressed, it pushes in on
the power brake booster input rod applying the
brakes. At the same time, it allows the brake lamp
switch's plunger to extend, thus applying the brake
lamps.
REMOVAL
(1) Disconnect and isolate the remote ground bat-
tery cable from the ground stud on the right strut
tower.
(2) Remove the brake lamp switch from its bracket
(Fig. 74). The brake lamp switch is removed by
depressing and holding the brake pedal while rotat-
ing brake lamp switch in a counterclockwise direction
approximately 30 degrees. Pull the switch rearward
and remove it from its mounting bracket.
CYLINDER -
1 - BUSHINGS
2 - BRAKE PEDAL
3 - BRAKE LAMP SWITCH
4 - PIVOT SHAFT
(3) Remove the retaining clip from the brake pedal
pin securing the power brake booster to the pedal
using following procedure (Fig. 75). Position a small
screwdriver between the center tang on the retaining
clip and the brake pedal pin. Rotate blade of screw-
driver enough so center tang on retaining clip can
BRAKES - BASE BRAKE SYSTEM 5 - 41
Fig. 74 Brake Pedal