Dodge Durango (HB). Manual — part 67
11. Install the upper coupling to the steering column
(1) then install the pinch bolt to the upper coupling
(2). Tighten to 38 N·m (28 ft. lbs.).
12. Install the steering column opening cover (Refer
to 23 - BODY/INSTRUMENT PANEL/STEERING
COLUMN OPENING COVER - REMOVAL).
13. Install the steering column opening cover rein-
forcement.
14. Install the upper and lower shrouds.
15. Reconnect the negative battery cable.
POWER BRAKE BOOSTER
DESCRIPTION
All models use a tandem diaphragm, power brake
booster (3).
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 (3). The outer edge
of the diaphragm is secured to the housing. A spacer
block (2) is located in between the cowl and the
booster housing. The booster push rod (1), connects
the booster to the brake pedal and master cylinder (4),
is attached to the center of the diaphragm. A check
valve (5) is used in the booster outlet connected to the
engine intake manifold. Power assist is generated by
utilizing a combination of vacuum and atmospheric
pressure to boost brake assist.
HB
BRAKES - BASE
5 - 47
REMOVAL
1. Depress the brake pedal five times to deplete any
vacuum that may remain in the booster unit.
2. Siphon and drain the fluid from the reservoir.
3. Remove the wiper arm (1) and cowl assembly
(Refer to 8 - ELECTRICAL/WIPERS/WASHERS/
WIPER ARMS - REMOVAL).
4. Remove the brake lamp switch (Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING
-
EXTERIOR/BRAKE
LAMP SWITCH - REMOVAL).
5. Remove clip securing booster push rod to brake
pedal (1) (Refer to 5 - BRAKES/HYDRAULIC/ME-
CHANICAL/PEDAL - REMOVAL).
6. Remove the brake booster mounting nuts (2).
7. Disconnect the brake level electrical connector (4).
5 - 48
BRAKES - BASE
HB
8. Disconnect the brake lines at the master cylinder.
9. Disconnect vacuum line (1) at booster.
10. Remove master cylinder (1) from the mounting
studs (2) on the power brake booster.
11. Remove the booster (1) and spacer block from
front cowl panel.
HB
BRAKES - BASE
5 - 49
12. Wipe clean any debris from the brake booster
cowl mounting hole (2).
INSTALLATION
1. Install the spacer block and gaskets if removed.
2. Guide the booster studs into the cowl panel holes
and seat the booster (1) on the panel.
3. Install and tighten new booster attaching nuts (2) to
28 N·m (250 in. lbs.).
4. Install the booster push rod (1) on brake pedal and
install clip.
5. Install a new brake lamp switch (Refer to 8 -
ELECTRICAL/LAMPS/LIGHTING
-
EXTERIOR/
BRAKE LAMP SWITCH - INSTALLATION).
5 - 50
BRAKES - BASE
HB
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