Power Brake Booster - Dodge Dakota Sport 2001 Service Manual

AN
MASTER CYLINDER (Continued)
(3) Install brake lines and tighten to 19 N·m (170
in. lbs.)
(4) Fill and bleed base brake system. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
PEDAL
DESCRIPTION
A suspended-type brake pedal is used. The pedal is
attached to the pedal support bracket with a pivot
bolt and bushings. The booster push rod is attached
to the pedal with a clip. The pedal, bushings, pivot
pin and support bracket are all serviceable compo-
nents.
OPERATION
The brake pedal is attached to the booster push
rod. When the pedal is depressed, the primary
booster push rod is depressed which move the booster
secondary rod. The booster secondary rod depress the
master cylinder piston.
REMOVAL
(1) Remove stop lamp switch. (Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING - EXTERIOR/BRAKE
LAMP SWITCH - REMOVAL).
(2) Remove clip securing booster push rod to brake
pedal (Fig. 43).
(3) Remove pedal pivot pin C-clip and slide pin out
of support bracket and pedal.
(4) Remove pedal and bushings.
INSTALLATION
(1) Replace bushings if worn or damaged.
(2) Lubricate pedal bushings and pivot pin with
Mopar multi mileage grease, Lubriplate, or a silicone
grease.
(3) Install bushings in pedal and position pedal in
support.
(4) Insert pivot pin through support and pedal
bushings and install C-clip.
(5) Install booster push rod on brake pedal and
install push rod retainer clip.
(6) Install stop lamp switch. (Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING - EXTERIOR/BRAKE
LAMP SWITCH - INSTALLATION).

POWER BRAKE BOOSTER

DESCRIPTION
All models use a tandem diaphragm, power brake
booster.
Fig. 43 Brake Pedal Mounting
1 - PEDAL SUPPORT
2 - PIVOT ROD
3 - PEDAL SUPPORT
4 - BRAKE PEDAL
5 - BOOSTER ROD
6 - CLUTCH ROD
7 - CLUTCH PEDAL
8 - BRAKE PEDAL
9 - BOOSTER ROD
NOTE: The power brake booster is not a repairable
component. The booster must be replaced as an
assembly if diagnosis indicates a malfunction has
occurred.
OPERATION
The booster unit consists of a single housing
divided into two by a tandem diaphragm. The outer
edge of the diaphragm is secured to the housing. The
booster push rod, which connects the booster to the
brake pedal and master cylinder, is attached to the
center of the diaphragm. A check valve is used in the
booster outlet connected to the engine intake mani-
fold. Power assist is generated by utilizing a combi-
nation of vacuum and atmospheric pressure to boost
brake assist.
REMOVAL
(1) Remove master cylinder. (Refer to 5 - BRAKES/
HYDRAULIC/MECHANICAL/MASTER CYLINDER -
REMOVAL).
(2) Disconnect vacuum lines at booster.
(3) Remove clip securing booster push rod to brake
pedal (Refer to 5 - BRAKES/HYDRAULIC/MECHAN-
ICAL/PEDAL - REMOVAL). (Fig. 44).
(4) Remove nuts from booster mounting studs (Fig.
45).
(5) Remove booster, spacer and gaskets from front
cowl panel.
BRAKES - BASE 5 - 25