Chrysler RAM TRUCK 2500 1994 Service Manual page 191

5 - 32 REAR WHEEL ANTILOCK BRAKE (RWAL) SYSTEM — ^— — — •
REAR
BRAKE
HOSE
REAR
SENSOR
HARNESS
CONNECTOR
REAR
SENSOR
HARNESS
CUP
REAR
AXLE
HOUSING
Fig. 17 Rear Speed Sensor Harness Routing And Attachment
(7) Insert sensor i n axle housing opening.
(8) Position cover over sensor and install cover and
sensor attaching screw.
(9) Connect harness wires to sensor.
(10) Lower vehicle.
REAR SPEED SENSOR REAR HARNESS
REMOVAL/INSTALLATION
(1) Raise vehicle on hoist.
(2) Disconnect sensor harness at sensor. Then dis­
engage small harness clip from sensor cover (Fig. 18).
(3) Disconnect sensor harness at axle connector.
(4) Unclip sensor harness from plastic retainer
that secures harness and rear brake hose (Fig. 19).
(5) Remove rear harness from vehicle.
(6) Install new harness and secure i n retainers.
Then connect harness to sensor and axle connector
and lower vehicle.
RWAL SYSTEM BRAKE BLEEDING
Use Mopar DOT 3 brake fluid, or an equivalent
meeting SAE J1703-F and DOT 3 standards, to fill
and bleed the system.
Bleeding can be performed either manually or with
pressure equipment. However, i f pressure equipment
is used, i t will be necessary to hold the front brake
metering valve open i n order to bleed the front
brakes. The valve can be held open with a tension
clip tool or by hand. I t will also be necessary that a
suitable size pressure tank hose adapter be available
for use on the master cylinder reservoir caps.
J9405-81
SENSOR
HARNESS
CONNECTOR
J9405-92
Fig
D
18 Disengaging Harness Connector At Rear
Sensor
MANUAL BRAKE BLEEDING PROCEDURE
(1) I f master cylinder has been overhauled or a
new cylinder will be installed, bleed cylinder on
bench before installation. This shortens time needed
to bleed system and ensures proper cylinder opera­
tion.
(2) Wipe master cylinder reservoir and filler caps
clean with shop towels. Use Mopar brake cleaner i f
exterior of reservoir and filler caps are extremely
dirty.
(3) Remove reservoir filler caps and fill reservoir
with Mopar, or equivalent DOT 3 brake fluid.
(4) Open all caliper and wheel cylinder bleed
screws.