Jeep 1997 Grand Cherokee Service Manual page 220

5 - 40 BRAKES
REMOVAL AND INSTALLATION (Continued)
(8) Remove sensor and wire assembly.
INSTALLATION
(1) Apply Mopar Lock N' Seal or Loctite 242 to
sensor attaching bolt. Use new sensor bolt if original
MOUNTING BOLT SENSOR
bolt is worn or damaged.
(2) Position sensor on steering knuckle. Seat sen-
sor locating tab in hole in knuckle and install sensor
attaching bolt finger tight.
(3) Tighten sensor bolt to 14 N·m (11 ft. lbs.).
(4) Route sensor wire from steering knuckle to
fender panel.
(5) Engage grommets on sensor wire in brackets
on body, chassis, frame, and steering knuckle.
(6) Check sensor wire routing. Be sure wire is
clear of all chassis components and is not twisted or
kinked at any spot.
(7) Seat sensor wire in body grommet and seat
grommet in fender panel.
(8) Connect sensor wire to harness in engine com-
partment.
REAR WHEEL SPEED SENSOR
REMOVAL
(1) Raise and fold rear seat forward. Then move
carpeting aside for access to rear sensor connectors.
(2) Disconnect rear sensor wires at harness con-
nectors.
(3) Push sensor wires and grommets through floor-
pan holes.
(4) Raise vehicle and remove wheel and tire
assemble.
(5) Remove disc brake caliper and rotor.
(6) Disengage sensor wire from axle and chassis
brackets and from brake line retainers.
(7) Remove bolt attaching sensor to splash shield
bracket (Fig. 10).
(8) Remove sensor from splash shield bracket.
Fig. 10 Sensor Mounting Bolt
INSTALLATION
(1) Insert sensor through splash shield hole.
(2) Apply Mopar Lock N' Seal or Loctite 242 to
original sensor bolt. Use new bolt if original is worn
or damaged.
WHEEL SPEED SENSOR TONE WHEEL
(3) Install sensor bolt finger tight only at this
time.
(4) If original sensor is being installed or
adjusted, remove any remaining pieces of cardboard
spacer from sensor pickup face. Set air gap to 0.92 to
1.275 mm (0.036 to 0.05 in.) with feeler gauge (Fig.
11). Tighten sensor bolt to 14 N·m (11 ft. lbs.).
(5) If new sensor is being installed, push card-
board spacer on sensor face against tone ring. Then
tighten sensor bolt to 14 N·m (11 ft. lbs.). Correct air
gap will be established as tone ring rotates and peels
spacer off sensor face.
(6) Route sensor wires to rear seat area.
(7) Feed sensor wires through floorpan access hole
and seat sensor grommets in floorpan.
(8) Secure sensor wire in brackets and in retainers
on rear brake lines. Verify that sensor wire is secure
and clear of rotating components.
(9) Install rotor, caliper and wheel, lower vehicle.
(10) Fold rear seat and carpet forward for access
to sensor wires and connectors.
(11) Connect sensor wires to harness connectors.
(12) Reposition carpet and fold rear seat down.
Fig. 11 Air Gap On Rear Sensor
ACCELERATION SWITCH
REMOVAL
(1) Turn ignition switch to the OFF position.
(2) Disconnect battery negative cable.
ZG