Page 297 of 2585

(6) Road test the vehicle to verify proper operation
of the brake system.
ROTOR
DIAGNOSIS AND TESTING - BRAKE ROTOR
Any servicing of the rotor requires extreme care to
maintain the rotor within service tolerances to
ensure proper brake action. Excessive runout or wobble in a rotor can increase
pedal travel due to piston knock-back. This increases
guide pin sleeve wear due to the tendency of the cal-
iper to follow the rotor wobble. When diagnosing a brake noise or pulsation, the
machined disc braking surface should be checked and
inspected.
BRAKING SURFACE INSPECTION
Light braking surface scoring and wear is accept-
able. If heavy scoring or warping is evident, the rotor
must be refaced or replaced. (Refer t o 5 - BRAKES/
HYDRAULIC/MECHANICAL/ROTORS - STAN-
DARD PROCEDURE). Excessive wear and scoring of the rotor can cause
improper lining contact on the rotor's braking sur-
face. If the ridges on the rotor are not removed before
new brake shoes are installed, improper wear of the
shoes will result. If a vehicle has not been driven for a period of
time, the rotor's braking surface will rust in the
areas not covered by the brake shoes at that time.
Once the vehicle is driven, noise and chatter from
the disc brakes can result when the brakes are
applied. Some discoloration or wear of the rotor surface is
normal and does not require resurfacing when lin-
ings are replaced. If cracks or burned spots are evi-
dent, the rotor must be replaced.
ROTOR MINIMUM THICKNESS
Measure rotor thickness at the center of the brake
shoe contact surface. Replace the rotor if it is worn
below minimum thickness or if machining the rotor
will cause its thickness to fall below specifications.
CAUTION: Do not machine the rotor if it will cause
the rotor to fall below minimum thickness.
Minimum thickness specifications are cast on the
rotor's unmachined surface (Fig. 82). Limits can also
be found in this section's specification table. (Refer to
5 - BRAKES/HYDRAULIC/MECHANICAL/ROTOR -
SPECIFICATIONS)
ROTOR THICKNESS VARIATION
Thickness variation in a rotor's braking surface
can result in pedal pulsation, chatter and surge. This
can also be caused by excessive runout in the rotor or
the hub. Rotor thickness variation measurements should be
made in conjunction with measuring runout. Mea-
sure thickness of the brake rotor at 12 equal points
around the rotor braking surface with a micrometer
at a radius approximately 25 mm (1 inch) from edge
of rotor (Fig. 83). If thickness measurements vary
beyond the specification listed in the specifaction
table (Refer t o 5 - BRAKES/HYDRAULIC/MECHAN-
ICAL/ROTOR - SPECIFICATIONS), the rotor should
be refaced or replaced. (Refer t o 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTORS - STANDARD
PROCEDURE).
ROTOR RUNOUT
On-vehicle rotor runout is the combination of the
individual runout of the hub face and the runout of
the rotor. (The hub and rotor runouts are separable).
To measure rotor runout on the vehicle, first remove
the tire and wheel assembly. Reinstall the wheel
mounting nuts on the studs, tightening the rotor to
the hub. Mount the Dial Indicator, Special Tool
C-3339, with Mounting Adaptor, Special Tool SP-
1910 on steering arm. The dial indicator plunger
should contact braking surface of rotor approximately
ten millimeters from edge of rotor (Fig. 84). Check
lateral runout on both sides of the rotor, marking the
low and high spots on both. Runout limits can be
found in the specification table in this section. (Refer
to 5 - BRAKES/HYDRAULIC/MECHANICAL/RO-
TOR - SPECIFICATIONS)
Fig. 82 Minimum Brake Rotor Thickness Markings (Typical)
1 - ROTOR MINIMUM THICKNESS MARKING
2 - ROTOR
5s - 54 BRAKESRS
PROPORTIONING VALVE (Continued)
Page 298 of 2585

If runout is in excess of the specification, check the
lateral runout of the hub face. Before removing the
rotor from the hub, place a chalk mark across both
the rotor and the one wheel stud closest to where the
high runout measurement was taken. This way, the
original mounting spot of the rotor on the hub is
indexed (Fig. 85). Remove the rotor from the hub. NOTE: Clean the hub face surface before checking
runout. This provides a clean surface to get an
accurate indicator reading.
Mount Dial Indicator, Special Tool C-3339, and
Mounting Adaptor, Special Tool SP-1910, to the steer-
ing knuckle. Position the indicator stem so it contacts
the hub face near the outer diameter. Care must be
taken to position stem outside of the stud circle, but
inside of the chamfer on the hub rim (Fig. 86). Hub runout should not exceed 0.03 mm (0.0012
inch). If runout exceeds this specification, the hub
must be replaced. (Refer t o 2 - SUSPENSION/
FRONT/HUB / BEARING - REMOVAL)(Refer to 2 -
SUSPENSION/REAR/HUB / BEARING - REMOVAL) If the hub runout does not exceed this specifica-
tion, install the rotor back on the hub, aligning the
chalk marks on the rotor with a wheel mounting
stud, two studs apart from the original stud (Fig. 87).
Tighten nuts in the proper sequence and torque to
specifications. Recheck brake rotor runout to see if the runout is
now within specifications. (Refer t o 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTOR - SPECIFICA-
TIONS) If runout is not within specifications, reface or
replace the brake rotor. (Refer t o 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTORS - STANDARD
PROCEDURE)
Fig. 83 Checking Rotor For Thickness
1 - CALIPER
Fig. 84 Checking Rotor Runout
1 - SPECIAL TOOL SP-1910
2 - 10 MILLIMETERS FROM EDGE
3 - DISC SURFACE
4 - SPECIAL TOOL C-3339
Fig. 85 Marking Rotor and Wheel Stud
1 - CHALK MARK
RS BRAKES5s-55
ROTOR (Continued)
Page 299 of 2585

STANDARD PROCEDURE - BRAKE ROTOR
MACHINING
NOTE: Refacing the rotor is not required each time
the brake pads are replaced, only when the need is
foreseen.Any servicing of the rotor requires extreme care to
maintain the rotor within service tolerances to
ensure proper brake action. If the rotor surface is deeply scored or warped, or
there is a complaint of brake roughness or brake
pedal pulsation, the rotor should be refaced using a
hub-mounted on-car brake lathe (Fig. 88), or
replaced.
The use of a hub-mounted on-car brake lathe is
highly recommended to eliminate the possibility of
excessive runout. It trues the brake rotor to the vehi-
cle's hub and bearing.
NOTE: All rotors have markings for minimum allow-
able thickness cast on an un-machined surface of
the rotor (Fig. 89) (Fig. 90). Minimum thickness
specifications can also be found in the specification
table in this section. (Refer t o 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTOR - SPECIFICATIONS)
Fig. 86 Checking Hub Runout
1 - HUB SURFACE
2 - SPECIAL TOOL C-3339
3 - SPECIAL TOOL SP-1910
Fig. 87 Index Rotor And Wheel Stud
1 - CHALK MARK
Fig. 88 On-Car Brake Lathe
1 - ON-CAR BRAKE LATHE
Fig. 89 Front Brake Rotor
1 - ROTOR MINIMUM THICKNESS MARKING
2 - ROTOR
5s - 56 BRAKESRS
ROTOR (Continued)
Page 300 of 2585

Minimum allowable thickness is the minimum
thickness which the brake rotor machined surface
may be cut to.
CAUTION: Do not machine the rotor if it will cause
the rotor to fall below minimum thickness.
Before installation, verify the brake rotor face and
the hub adapters are free of any chips, rust, or con-
tamination. When mounting and using the brake lathe, strict
attention to the brake lathe manufacturer's operating
instructions is required. Machine both sides of the brake rotor at the same
time. Cutting both sides at the same time minimizes
the possibility of a tapered or uneven cut. When refacing a rotor, the required TIR (Total
Indicator Reading) and thickness variation limits
MUST BE MAINTAINED. Extreme care in the oper-
ation of rotor turning equipment is required. Specifi-
cations for brake rotor machining can be found in
this section's specification table. (Refer to 5 -
BRAKES/HYDRAULIC/MECHANICAL/ROTOR -
SPECIFICATIONS)
REMOVAL - FRONT BRAKE ROTOR
(1) Raise vehicle on jackstands or centered on a
frame contact type hoist. See Hoisting in Lubrication
and Maintenance. (2) Remove the front wheel and tire assembly.
(3) Remove the two mounting bolts securing the
disc brake caliper adapter with brake caliper to the
steering knuckle (Fig. 91). (4) Remove the disc brake caliper and adapter as
an assembly from the steering knuckle (Fig. 91).
Hang the assembly out of the way using wire or a
bungee cord. Use care not to overextend the brake
hose when doing this. (5) Remove any retainer clips from the wheel
mounting studs. (6) Remove brake rotor from hub by pulling it
straight off wheel mounting studs (Fig. 91).
INSTALLATION - FRONT BRAKE ROTOR
(1) Install the brake rotor back on the hub and
bearing (Fig. 91). (2) Install brake caliper and adapter back over
brake rotor aligning adapter with mounting holes on
steering knuckle (Fig. 91). (3) Install the two adapter mounting bolts securing
the adapter to the steering knuckle. Tighten the
mounting bolts to 169 N´m (125 ft. lbs.) torque. (4) Install wheel and tire assembly on vehicle.
Tighten the wheel mounting lug nuts in proper
sequence until all nuts are torqued to half specifica-
tion, then repeat the tightening sequence to the full
specified torque of 135 N´m (100 ft. lbs.). (5) Lower vehicle to the ground.
SPECIFICATIONS
BRAKE ROTOR
When refacing a rotor, the required TIR (Total
Indicator Reading) and thickness variation limits
MUST BE MAINTAINED. Extreme care in the oper-
ation of rotor turning equipment is required.
Fig. 90 Rear Brake Rotor Minimum Thickness Markings
1 - ROTOR MINIMUM THICKNESS AND DRUM MAXIMUM
DIAMETER SPECIFICATIONS ARE SHOWN ON THIS SURFACE
2 - REAR ROTOR
Fig. 91 Front Brake Mounting
1 - BRAKE ROTOR
2 - HUB AND BEARING
3 - STEERING KNUCKLE
4 - ADAPTER MOUNTING BOLTS
5 - BRAKE CALIPER
6 - ADAPTER
7 - CLIP
RS BRAKES5s-57
ROTOR (Continued)
Page 301 of 2585

LIMITS/SPECIFICATIONS
Braking Rotor Rotor ThicknessMinimum Rotor
Thickness Rotor Thickness
Variation Rotor Runout*
Front - TRW 27.87±28.13 mm
1.097-1.107 in. 25.3 mm
0.996 in. 0.009 mm
0.0004 in. 0.075 mm
0.0030 in.
Front - Continental Teves 27.90±28.10 mm
1.098-1.106 in. 25.3 mm
0.996 in. 0.008 mm
0.0003 in. 0.100 mm
0.0039 in.
Rear 12.4±12.6 mm
0.488 -0.496 in. 11.25 mm
0.443 in. 0.013 mm
0.0005 in. 0.14 mm
0.0055 in.
*
TIR Total Indicator Reading (Measured On Vehicle)
BRAKE ROTOR - EXPORT
NOTE: Use the following information on all 4 wheel
disc brake vehicles that are equipped with BR3
sales code. When refacing a rotor, the required TIR (Total
Indicator Reading) and thickness variation limits
MUST BE MAINTAINED. Extreme care in the oper-
ation of rotor turning equipment is required.
LIMITS/SPECIFICATIONS
Brake Rotor Rotor Thickness Minimum Rotor
Thickness Rotor Thickness
Variation Rotor Runout*
Front 27.9-28.1 mm
1.098 -1.106 in. 26.5 mm
1.043 in 0.010 mm
0.0004 in. 0.080 mm
0.0031 in.
Rear 12.4-12.6 mm
0.488-0.496 in. 11.25 mm
0.443 in. 0.013 mm
0.0005 in. 0.14 mm
0.0055 in.
* TIR Total Indicator Reading (Measured On Vehicle)
SUPPORT PLATE - DRUM
BRAKE
REMOVAL
(1) Using a brake pedal depressor, move and
secure brake pedal to a position past its first 1 inch
of travel. This will prevent brake fluid from draining
out of master cylinder when brake tube is remove
from wheel cylinder. (2) Raise vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE). (3) Remove wheel and tire assembly.
(4) Disconnect brake tube from rear of wheel cylin-
der. Cap open ends (5) Remove brake drum.
(6) Remove brake shoes from brake support plate.
(Refer t o 5 - BRAKES/HYDRAULIC/MECHANICAL/
BRAKE PADS/SHOES - REMOVAL). (7) Remove the 2 bolts attaching the wheel cylin-
der to the brake support plate. (8) Remove the wheel cylinder from the brake sup-
port plate. (9) Disconnect the park brake cable from the park
brake actuation lever. (10) Using a suitable tool such as a 14 mm box
wrench (Fig. 92) or an aircraft type hose clamp, com-
press the flared legs on park brake cable retainer.
Then pull the park brake cable out of brake support
plate. (11) Remove the rear hub and bearing. (Refer to 2
- SUSPENSION/REAR/HUB / BEARING -
REMOVAL) (12) Remove the rear brake support plate from the
rear axle.
INSTALLATION
(1) Install the 4 hub and bearing to axle mounting
bolts into the mounting holes in the flange of the
rear axle. (2) Install the rear brake support plate on the 4
mounting bolts installed in the flange of the rear axle
(Fig. 93).
5s - 58 BRAKESRS
ROTOR (Continued)
Page 302 of 2585

(3) Install the rear hub and bearing (and connect
wheel speed sensor where applicable) stopping short
of installing the brake drum. (Refer t o 2 - SUSPEN-
SION/REAR/HUB / BEARING - INSTALLATION) (4) Install the rear park brake cable into its
mounting hole in the rear brake support plate. (5) Install the park brake cable on the park brake
actuation lever. (6) Apply sealant such as Mopar Gasket-In-A-Tube
or equivalent around the wheel cylinder opening in
the brake support plate. (7) Install wheel cylinder onto brake support.
Install and tighten the wheel cylinder to brake sup- port plate attaching bolts to 8 N´m (75 in. lbs.)
torque.
(8) Install brake tube into wheel cylinder. Tighten
tube nut to a torque of 17 N´m (145 in. lbs.) torque. (9) Install the rear brake shoes on the brake sup-
port plate. (Refer t o 5 - BRAKES/HYDRAULIC/ME-
CHANICAL/BRAKE PADS/SHOES -
INSTALLATION). (10) Install brake drum.
(11) Install the wheel and tire assembly. Tighten
the wheel mounting nuts in proper sequence until all
nuts are torqued to half specification, then repeat the
tightening sequence to the full specified torque of 135
N´m (100 ft. lbs.). (12) Adjust drum brake shoes. (Refer to 5 -
BRAKES/HYDRAULIC/MECHANICAL/BRAKE
PADS/SHOES - ADJUSTMENTS) (13) Remove brake pedal depressor tool.
(14) Bleed the brake system as necessary. (Refer to
5 - BRAKES - BASE - STANDARD PROCEDURE). (15) Lower the vehicle.
WHEEL CYLINDERS
REMOVAL
(1) Using a brake pedal depressor, move and
secure brake pedal to a position past its first 1 inch
of travel. This will prevent brake fluid from draining
out of master cylinder when brake tube is remove
from wheel cylinder. (2) Raise vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE). (3) Remove wheel and tire assembly.
(4) Disconnect brake tube from rear of wheel cylin-
der. Cap open ends (5) Remove brake drum.
(6) Remove brake shoes from brake support plate
(Discard if contaminated).(Refer t o 5 - BRAKES/HY-
DRAULIC/MECHANICAL/BRAKE PADS/SHOES -
REMOVAL) (7) Remove the 2 bolts attaching the wheel cylin-
der to the brake support plate. (8) Remove the wheel cylinder from the brake sup-
port plate.
INSPECTION
With brake drums removed, inspect the wheel cyl-
inder boots for evidence of a brake fluid leak. Visu-
ally check the boots for cuts, tears, or heat cracks. If
any of these conditions exist, the wheel cylinders
should be completely cleaned, inspected and new
parts installed.
Fig. 92 Removing Park Brake Cable From Brake Support Plate
1 - PARK BRAKE CABLE
2 - CABLE RETAINER
3 - 14 mm BOX WRENCH
4 - BRAKE SUPPORT PLATE
Fig. 93 Brake Support Plate Mounted On BearingAttaching Bolts
1 - REAR BRAKE SUPPORT PLATE
2 - HUB/BEARING MOUNTING BOLTS
RS BRAKES5s-59
SUPPORT PLATE - DRUM BRAKE (Continued)
Page 303 of 2585

If a wheel cylinder is leaking and the brake lining
material is saturated with brake fluid, the brake
shoes must be replaced.
INSTALLATION
(1) Apply sealant such as Mopar Gasket-In-A-Tube
or equivalent around the wheel cylinder opening in
the brake support plate. (2) Install wheel cylinder onto brake support.
Install and tighten the wheel cylinder to brake sup-
port plate attaching bolts to 8 N´m (75 in. lbs.)
torque. (3) Install brake tube into wheel cylinder. Tighten
tube nut to a torque of 17 N´m (145 in. lbs.) torque. (4) Install the rear brake shoes on the brake sup-
port plate. (Refer t o 5 - BRAKES/HYDRAULIC/ME-
CHANICAL/BRAKE PADS/SHOES -
INSTALLATION). (5) Install brake drum.
(6) Install wheel and tire. Install and tighten
wheel lug nuts to 135 N´m (100 ft. lbs.). (7) Adjust drum brake shoes. (Refer to 5 -
BRAKES/HYDRAULIC/MECHANICAL/BRAKE
PADS/SHOES - ADJUSTMENTS) (8) Remove brake pedal depressor tool.
(9) Bleed the brake system as necessary. (Refer to
5 - BRAKES - BASE - STANDARD PROCEDURE). (10) Lower vehicle.
PARKING BRAKE
DESCRIPTION
DESCRIPTION
The parking brake system is operated by a foot
operated parking brake lever. The parking brake
lever is mounted on the body of the vehicle to the left
of the brake pedal (Fig. 94). It is a automatic-adjust-
ing type lever. The vehicle has four flexible steel parking brake
cables. They are: ² Front
² Intermediate
² Left rear
² Right rear
The front parking brake cable extends from the
parking brake lever. A steel equalizer bracket con-
nects the front parking brake cable to the left rear
and intermediate cable. The intermediate cable is
connected to the right rear cable using a parking
brake cable connector. On vehicles equipped with rear drum brakes, the
rear service brakes also act as the vehicle's parking
brakes. Vehicles equipped with rear disc brakes use a
small duo-servo brake assembly mounted to the each
rear disc brake caliper adapter as the parking brake.
The inside of the brake rotor (hat section of drum-in-
hat style brake rotor) is used as the parking brake
drum.
DESCRIPTION - EXPORT
The parking brake system on this vehicle features
a hand-operated parking brake lever. The lever is
located between the two front seats and requires a
special front cable.
OPERATION
The automatic-adjusting feature in the foot oper-
ated parking brake lever continuously applies mini-
mal tension to the parking brake cables when the
parking brake lever is in the released position to
keep them in adjustment at all times. Due to this
feature, the parking brake cables require no periodic
adjustment. When the parking brake lever is applied, the
cables are pulled, thus applying the brake shoes
(rear drum brakes) or parking brake shoes (rear disc
brakes) at each rear wheel. The brake shoes are mechanically operated by an
internal lever and strut connected to the rear park-
ing brake cables. An equalizer bracket is used at the rear end of the
front parking brake cable to distribute tension
equally to each parking brake cable.
Fig. 94 Parking Brake Lever (Pedal)
1 - PARK BRAKE PEDAL ASSEMBLY
2 - PARK BRAKE PEDAL
3 - CARPET
4 - FRONT PARK BRAKE CABLE
5 - SEAL
6 - FLOOR PAN
5s - 60 BRAKESRS
WHEEL CYLINDERS (Continued)
Page 304 of 2585

STANDARD PROCEDURE
STANDARD PROCEDURE - PARKING BRAKE
AUTOMATIC ADJUSTER TENSION RELEASE
The parking brake lever (pedal) mechanism used
in this vehicle is designed so that the automatic
adjuster is not required to be locked out when servic-
ing the parking brake lever (pedal) or the parking
brake cables. This parking brake lever (pedal) mechanism is
designed so that the adjuster mechanism will rotate
only half a turn when the tension is released from
the parking brake cable. This eliminates the require-
ment to lock out the automatic adjuster when servic-
ing the parking brake lever (pedal) mechanism and
cables. Use the following procedure to release the tension
from the parking brake cables and the automatic
adjuster in the parking brake lever (pedal) mecha-
nism. (1) Grasp the exposed section of the front parking
brake cable and pull rearward on it. While holding
the park brake in this position, install a pair of lock-
ing pliers on the front parking brake cable just rear-
ward of the second body outrigger bracket (Fig. 95).
(2) Remove the left rear and intermediate parking
brake cables from the parking brake cable equalizer
(Fig. 96). (3) Remove the equalizer from the front parking
brake cable. (4) Remove the locking pliers from the front park-
ing brake cable. This will allow the adjuster in the
parking brake lever (pedal) mechanism to rotate
around to its stop. This will remove the tension from
the adjuster and front park brake cable (Refer to 5 -
BRAKES/PARKING BRAKE - STANDARD PROCE-
DURE).
STANDARD PROCEDURE - PARKING BRAKE
AUTOMATIC ADJUSTER TENSION RESET
The parking brake lever (pedal) mechanism used
in this vehicle is designed so that the automatic
adjuster is not required to be locked out when servic-
ing the parking brake lever (pedal) or the parking
brake cables. (1) Grasp the exposed section of the front parking
brake cable and pull rearward on it. While holding
the park brake in this position, install a pair of lock-
ing pliers on the front parking brake cable just rear-
ward of the second body outrigger bracket (Fig. 95). (2) Install the equalizer on the front parking brake
cable. (3) Install the left rear and intermediate park
brake cable in the correct location on the parking
brake cable equalizer (Fig. 96). (4) Remove the locking pliers from the front park-
ing brake cable. This will allow the adjuster in the
park brake lever (pedal) mechanism to tension the
park brake cables. (5) Apply and release the parking brake lever
(pedal) one time. This will seat the parking brake
cables and allow the auto adjuster in the parking
brake lever (pedal) mechanism to correctly tension
the parking brake cables.
Fig. 95 Locking Out Automatic Adjuster
1 - PARK BRAKE CABLE
2 - REAR BODY OUTRIGGER BRACKET
3 - LOCKING PLIERS
Fig. 96 Parking Brake Cable Attachment To Equalizer
1 - EQUALIZER
2 - LEFT REAR PARKING BRAKE CABLE
3 - LOCKING NUT
4 - INTERMEDIATE PARKING BRAKE CABLE
5 - FRONT PARKING BRAKE CABLE
RS BRAKES5s-61
PARKING BRAKE (Continued)