wheel torque CHRYSLER CARAVAN 2005 Owner's Guide

(3) Install the park brake actuator strut (Fig. 30)
on the leading brake shoe. Then install the park
brake actuator lever on the strut (Fig. 30).
(4) Install the automatic adjuster screw on the
leading brake shoe. Then install the trailing brake
shoe on the park brake actuating lever and park
brake actuating strut (Fig. 26). Position trailing
brake shoe on brake support plate.
(5) Install the brake shoe hold down pin and
spring on the trailing brake shoe (Fig. 25).
(6) Install the brake shoe to brake shoe upper
return spring (Fig. 24).
CAUTION: When installing the tension clip on the
automatic adjuster, it must be located on only the
threaded area of the adjuster assembly (Fig. 23). If it
is located on a non-threaded area of the adjuster, the
function of the automatic adjuster will be affected.
(7)Install the tension clip (Fig. 23) attaching the
upper return spring to the automatic adjuster assembly.
(8)Install the brake shoe to brake shoe lower return
springs on the brake shoes (Fig. 21) and (Fig. 22).
(9) Install automatic adjustment lever on the lead-
ing brake shoe of the rear brake assembly (Fig. 20).
(10) Install the actuating spring on the automatic
adjustment lever and leading brake shoe assembly
(Fig. 19).
(11) Verify that the automatic adjuster lever has
positive contact with the star wheel on the automatic
adjuster assembly.
(12) When all components of both rear brake
assemblies are correctly and fully installed, remove
the locking pliers from the front park brake cable.(13) Adjust brake shoes assemblies so as not to
interfere with brake drum installation.
(14) Install the rear brake drums on the hubs.
(15) Adjust rear brake shoes.
(16) Install the wheel and tire assembly.
(17) Tighten the wheel mounting stud 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.).
(18) Lower the vehicle.
(19) Push the parking brake lever (pedal) to the
floor once and release pedal. This will automatically
remove the slack from and correctly adjust the park-
ing brake cables.
(20) Road test vehicle. The automatic adjuster will
continue the brake adjustment during the road test
of the vehicle.
ADJUSTMENTS
ADJUSTMENT - REAR DRUM BRAKE SHOES
NOTE: Normally, self-adjusting drum brakes do not
require manual brake shoe adjustment. Although, in
the event of a brake shoe replacement, it is advis-
able to make the initial adjustment manually to
speed up the adjusting time.
NOTE: Before raising the vehicle, verify the parking
brake lever is fully released.
(1) Raise the vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE).
(2) Remove rubber plug from rear brake adjusting
hole in the rear brake support plate.
(3) Insert a thin screwdriver through the adjusting
hole in the support plate and against the star wheel
of the adjusting screw. Move handle of the tool down-
ward, rotating the star wheel until a slight drag is
felt when tire and wheel assembly is rotated.
(4) Insert a second thin screwdriver or piece of
welding rod into brake adjusting hole and push the
adjusting lever out of engagement with the star
wheel.Care should be taken so as not to bend
adjusting lever or distort lever spring.
(5) While holding the adjusting lever out of
engagement, back off the star wheel just enough to
ensure a free wheel with no brake shoe drag.
(6) Repeat the above adjustment at the other rear
wheel.
(7) Install the adjusting hole rubber plugs back in
the rear brake support plates.
(8) Lower the vehicle.
Fig. 30 Park Brake Components Assembled On
Leading Brake Shoe
1 - PARK BRAKE CABLE
2 - LEADING BRAKE SHOE
3 - PARK BRAKE ACTUATING STRUT
4 - PARK BRAKE ACTUATING LEVER
5 - BRAKE SUPPORT PLATE
RSBRAKES - BASE5-23
BRAKE PADS/SHOES - REAR DRUM (Continued)

INSTALLATION
INSTALLATION - FRONT DISC BRAKE CALIPER
(CONTINENTAL TEVES BRAKES)
CAUTION: TRW and Continental Teves brake cali-
pers are not interchangeable. Each caliper is specif-
ically designed for the unique brake system. If
calipers are interchanged, improper performance,
noise and increased stopping distance can occur.
(Refer to 5 - BRAKES/HYDRAULIC/MECHANICAL -
DESCRIPTION)
(1) Completely retract the caliper piston back into
piston bore of the caliper. Use a C-clamp to retract
the piston if necessary. Place a wood block over the
piston before installing the C-clamp to avoid damag-
ing the piston.
CAUTION: Use care when installing the brake cali-
per assembly onto the steering knuckle, so that the
seals on the caliper guide pin bushings do not get
damaged by the steering knuckle bosses.
(2) Carefully position the brake caliper and shoes
over the brake rotor and adapter.
(3) Install the caliper guide pin bolts and tighten
to a torque of 35 N´m (26 ft. lbs.).Extreme caution
should be taken not to cross thread the caliper
guide pin bolts.
(4) Install the anti-rattle clip on the outboard side
of the caliper. Start the clip into the holes on the cal-
iper, then stretch the clip legs past the abutments on
the caliper adapter.
CAUTION: When connecting the brake hose to the
caliper, install new brake hose to caliper special
copper washers.
(5) Install the brake hose on the caliper. To do
this, first place one NEW special fitting washer on
each side of the hose fitting, then slide the banjo bolt
through the fitting. Next, thread the banjo bolt into
the threaded port on the rear of the brake caliper.
Tighten the banjo bolt to a torque of 47 N´m (35 ft.
lbs.).
(6) Install the wheel and tire assembly. Tighten
the wheel mounting stud 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.).
(7) Lower the vehicle.
(8) Remove the brake pedal depressor (holding)
tool.
(9) Bleed the hydraulic brake circuit to the brake
caliper. (Refer to 5 - BRAKES - STANDARD PROCE-
DURE)(10) Road test the vehicle and make several stops
to wear off any foreign material on the brakes and to
seat the brake shoe linings.
INSTALLATION - FRONT DISC BRAKE CALIPER
(TRW BRAKES)
CAUTION: TRW and Continental Teves brake cali-
pers are not interchangeable. Each caliper is specif-
ically designed for the unique brake system. If
calipers are interchanged, improper performance,
noise and increased stopping distance can occur.
(Refer to 5 - BRAKES/HYDRAULIC/MECHANICAL -
DESCRIPTION)
(1) Completely retract the caliper piston back into
the bore of the caliper. Use a C-clamp to retract the
piston if necessary. Place a wood block over the pis-
ton before installing the C-clamp to avoid damaging
the piston.
CAUTION: Use care when installing the caliper onto
the disc brake adapter to avoid damaging the boots
on the caliper guide pins.
(2) Install the disc brake caliper over the brake
shoes on the brake caliper adapter.
(3) Align the caliper guide pin bolt holes with the
guide pins. Install the caliper guide pin bolts and
tighten them to a torque of 35 N´m (26 ft. lbs.) (Fig.
31).
(4) Install the banjo bolt connecting the brake hose
to the brake caliper (Fig. 31). Install NEW copper
washers on each side of the hose fitting as the banjo
bolt is guided through the fitting. Thread the banjo
bolt into the caliper and tighten it to a torque of 47
N´m (35 ft. lbs.).
(5) Install the tire and wheel assembly. Tighten
the wheel mounting nuts to a torque of 135 N´m (100
ft. lbs.).
(6) Lower the vehicle.
(7) Remove the brake pedal holding tool.
(8) Bleed the caliper as necessary. (Refer to 5 -
BRAKES - BASE - STANDARD PROCEDURE).
(9) Road test the vehicle and make several stops to
wear off any foreign material on the brakes and to
seat the brake shoes.
RSBRAKES - BASE5-27
DISC BRAKE CALIPER - FRONT (Continued)

CAUTION: Use care when installing the caliper
assembly onto the adapter, so the caliper guide pin
bushings do not get damaged by the mounting
bosses.
(3) Carefully lower caliper and brake shoes over
rotor and onto the adapter using the reverse proce-
dure for removal (Fig. 37).
CAUTION: When installing guide pin bolts extreme
caution should be taken not to cross-thread the cal-
iper guide pin bolts.
(4) Install the caliper guide pin bolts. Tighten the
guide pin bolts to a torque of 35 N´m (26 ft. lbs.).
CAUTION: When connecting the brake hose to the
caliper, install new brake hose to caliper special
washers.
(5) Install the brake hose on the caliper. To do
this, first place one NEW special copper washer on
each side of the hose fitting, then slide the banjo bolt
through the fitting. Next, thread the banjo bolt into
the threaded port on the rear of the brake caliper.
Tighten the banjo bolt to a torque of 47 N´m (35 ft.
lbs.).
(6) Install the wheel and tire assembly.
(7) Tighten the wheel mounting stud 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.).
(8) Lower the vehicle.
(9) Remove the brake pedal depressor (holding)
tool.
(10) Bleed the hydraulic brake circuit to the brake
caliper. (Refer to 5 - BRAKES - STANDARD PROCE-
DURE)
(11) Road test the vehicle and make several stops
to wear off any foreign material on the brakes and to
seat the brake shoe linings.
DISC BRAKE CALIPER
ADAPTER
REMOVAL - FRONT DISC BRAKE CALIPER
ADAPTER
(1) Raise vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE)
(2) Remove front wheel and tire assembly, disc
brake caliper and brake shoes. (Refer to 5 - BRAKES/
HYDRAULIC/MECHANICAL/BRAKE PADS/SHOES
- REMOVAL)
(3) Remove two bolts fastening adapter to steering
knuckle, then remove disc brake caliper adapter.
INSTALLATION - FRONT DISC BRAKE CALIPER
ADAPTER
(1) Place adapter over brake rotor and align
adapter mounting holes to knuckle.
CAUTION: Adapter mounting bolts have a special
DacrometTcoating applied to resist corrosion. If
mounting bolts need to be replaced, use only
MoparTreplacement parts.
(2) Install adapter mounting bolts and tighten to
169 N´m (125 ft. lbs.) torque.
(3) Install brake shoes, disc brake caliper and
wheel and tire assembly. (Refer to 5 - BRAKES/HY-
DRAULIC/MECHANICAL/BRAKE PADS/SHOES -
INSTALLATION)
(4) Lower vehicle.
(5) Pump the brake pedal several times to set the
pads to the brake rotor.
(6) Check and adjust brake fluid level as neces-
sary.
DISC BRAKE CALIPER GUIDE
PINS
REMOVAL - DISC BRAKE CALIPER GUIDE PINS
(TRW BRAKES)
(1) Raise the vehicle. Refer to HOISTING in
LUBRICATION AND MAINTENANCE.
(2) Remove the front tire and wheel assembly.
(3) Remove the two brake caliper guide pin bolts
(Fig. 42).
Fig. 42 Brake Caliper Mounting
1 - BRAKE HOSE
2 - ADAPTER MOUNTING BOLTS
3 - BANJO BOLT
4 - CALIPER GUIDE PIN BOLTS
RSBRAKES - BASE5-31
DISC BRAKE CALIPER - REAR (Continued)

(4) Remove the disc brake caliper from the disc
brake caliper adapter and hang it out of the way
using wire or a bungee cord. Use care not to overex-
tend the brake hose when doing this.
(5) Remove the guide pins and boots from the
adapter as shown (Fig. 43).
INSTALLATION - DISC BRAKE CALIPER GUIDE
PINS (TRW BRAKES)
(1) Lubricate the guide pins and inside the boots
with the packet supplied with the service kit, Syth-
eso GLK-1 lubricant or equivalent.
(2) Install the guide pins and boots in the adapter
as shown (Fig. 43). The boots have grooves built into
their inner lips to fit onto the pins and adapter.
CAUTION: Use care when installing the caliper onto
the disc brake adapter to avoid damaging the boots
on the caliper guide pins.
(3) Install the disc brake caliper over the brake
shoes on the brake caliper adapter.
(4) Align the caliper guide pin bolt holes with the
guide pins. Install the caliper guide pin bolts and
tighten them to a torque of 35 N´m (26 ft. lbs.) (Fig.
42).
(5) Install the tire and wheel assembly. Tighten
the wheel mounting nuts to a torque of 135 N´m (100
ft. lbs.).
(6) Lower the vehicle.
(7) Pump the brake pedal several times before
moving the vehicle to set the shoes to the brake
rotor.
DRUM
REMOVAL
(1) Raise the vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE).
(2) Remove the tire and wheel assembly from the
vehicle
(3) Remove the rear brake shoe adjusting hole
cover plug.
(4) Insert a thin screwdriver into brake adjusting
hole and hold adjusting lever away from notches of
adjusting screw star wheel.
(5) Insert another thin screwdriver into brake
adjusting hole and engage notches of brake adjusting
screw star wheel. Release brake adjustment by pry-
ing upward with adjusting tool.
(6) Remove rear brake drum from rear hub/bear-
ing assembly.
NOTE: It may be necessary to insert M8 X 1.25 MM
bolts into the two removal holes on the drum to
force the drum off the hub.
INSTALLATION
(1) Adjust brake shoe assemblies so as not to inter-
fere with brake drum installation.
(2) Install the rear brake drums on the hubs.
(3) Adjust drum brake shoes as necessary per pro-
cedure found in the Adjustment section of this ser-
vice manual group (Refer to 5 - BRAKES/
HYDRAULIC/MECHANICAL/DRUM -
ADJUSTMENTS).
(4) Install wheel and tire assembly.
(5) Tighten the wheel mounting stud 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.).
(6) Lower the vehicle.
Fig. 43 Guide Pins And Boots
1 - PINS
2 - BOOTS
5 - 32 BRAKES - BASERS
DISC BRAKE CALIPER GUIDE PINS (Continued)

OPERATION
When the brake pedal is depressed, the master cyl-
inder primary and secondary pistons apply brake
pressure through the chassis tubes to the brakes at
each tire and wheel assembly.
The master cylinder primary outlet port supplies
hydraulic pressure to the right front and left rear
brakes. The secondary outlet port supplies hydraulic
pressure to the left front and right rear brakes.
STANDARD PROCEDURE - MASTER CYLINDER
BLEEDING
CAUTION: When clamping master cylinder in vise,
only clamp master cylinder by its mounting flange.
Do not clamp master cylinder piston rod, reservoir,
seal or body.
(1) Clamp master cylinder in a vise.
NOTE: Use correct bleeder tubes when bleeding
master cylinder. Master cylinder outlet ports vary in
size and type depending on whether master cylin-
der is for a vehicle equipped with ABS or not. ABS
equipped master cylinders require the additional
use of ISO style flare adapters supplied in Special
Tool Package 8822 to be used in conjunction with
Bleeder Tubes, Special Tool Package 8358.
(2) Attach special tools for bleeding master cylin-
der in the following fashion:
(a)For non-ABS control equipped master
cylinders, thread a Bleeder Tube, Special Tool
8358±1, into each outlet port. Tighten each tube to
17 N´m (145 in. lbs.) torque. Flex bleeder tubes and
place open ends into mouth of fluid reservoir as far
down as possible (Fig. 47).
(b)For ABS equipped master cylinders,
thread one Adapter, Special Tool 8822±2, in each
outlet port. Tighten Adapters to 17 N´m (145 in.
lbs.) torque. Next, thread a Bleeder Tube, Special
Tool 8358±1, into each Adapter. Tighten each tube
to 17 N´m (145 in. lbs.) torque. Flex bleeder tubes
and place open ends into mouth of fluid reservoir
as far down as possible (Fig. 47).
NOTE: Make sure open ends of bleeder tubes stay
below surface of brake fluid once reservoir is filled
to proper level.
(3) Fill brake fluid reservoir with Mopartbrake
fluid or equivalent conforming to DOT 3 (DOT 4 and
DOT 4+ are acceptable) specifications. Make sure
fluid level is above tips of bleeder tubes in reservoir
to ensure no air is ingested during bleeding.
(4) Using a wooden dowel as a pushrod (Fig. 47),
slowly depress master cylinder pistons, then releasepressure, allowing pistons to return to released posi-
tion. Repeat several times until all air bubbles are
expelled. Make sure fluid level stays above tips of
bleeder tubes in reservoir while bleeding.
(5) Remove bleeder tubes from master cylinder
outlet ports, then plug outlet ports and install fill cap
on reservoir.
(6) Remove master cylinder from vise.
(7) Install master cylinder on vehicle. (Refer to 5 -
BRAKES - BASE/HYDRAULIC/MECHANICAL/MAS-
TER CYLINDER - INSTALLATION)
REMOVAL
REMOVAL - LHD
CAUTION: Vacuum in the power brake booster must
be pumped down (removed) before removing mas-
ter cylinder from power brake booster. This is nec-
essary to prevent the power brake booster from
sucking in any contamination as the master cylin-
der is removed. This can be done simply by pump-
ing the brake pedal, with the vehicle's engine not
running, until a firm feeling brake pedal is achieved.
(1) With engine not running, pump brake pedal
until a firm pedal is achieved (4-5 strokes).
(2) Disconnect negative battery terminal.
(3) Disconnect positive battery terminal.
(4) Remove battery shield.
Fig. 47 Master Cylinder Set Up For Bleeding
1 - BLEEDER TUBES 8358
2 - WOODEN DOWEL
3 - ADAPTER 8822-2 (USE ONLY ON ABS EQUIPPED MASTER
CYLINDERS)
4 - ADAPTER 8822-2 (USE ONLY ON ABS EQUIPPED MASTER
CYLINDERS)
5 - 36 BRAKES - BASERS
MASTER CYLINDER (Continued)

CAUTION: When tightening the primary and sec-
ondary brake tube nuts at master cylinder, be sure
brake tubes do not contact any other components
within the vehicle and that there is slack in the flex-
ible sections of the tubes. This is required due to
the movement between the ABS ICU and the master
cylinder while the vehicle is in motion.
(4) Connect primary and secondary brake tubes to
master cylinder primary and secondary ports (Fig.
50). Brake tubes must be held securely when tight-
ened to control orientation of flex section. Tighten
tube nuts to a torque of 17 N´m (145 in. lbs.).
(5) Install wiring harness connector to brake fluid
level switch mounted in brake fluid reservoir (Fig.
46).
(6) Install battery, clamp and nut.
(7) Install battery shield.
(8) Connect positive battery terminal.
(9) Connect negative battery terminal.
(10) Fill master cylinder with clean, fresh Mopart
Brake Fluid or equivalent.
(11) Road test vehicle to ensure proper operation of
brakes.
PEDALS - ADJUSTABLE
REMOVAL
NOTE: Before proceeding, review all Steering Col-
umn and Airbag Warnings and Cautions. (Refer to
19 - STEERING/COLUMN - WARNING)(Refer to 8 -
ELECTRICAL/RESTRAINTS - WARNING)
(1) Move driver's seat to full rearward position.
(2) Disconnect negative battery cable from battery
post and isolate.
(3) Remove throttle cable from throttle body lever.
(Refer to 14 - FUEL SYSTEM/FUEL INJECTION/
THROTTLE CONTROL CABLE - REMOVAL)
(4) Remove screws securing lower steering column
cover/knee blocker, then remove it (Fig. 53).
(5) Disconnect parking brake release link at
release handle.
(6) Compress tabs on sides of data link diagnostic
connector and remove it from knee blocker reinforce-
ment plate.
(7) Remove screws securing knee blocker reinforce-
ment plate in place, then remove reinforcement plate
(Fig. 53).
(8) Remove hood release from lower left reinforce-
ment.
(9) Remove screws securing instrument panel
lower left reinforcement in place, then remove rein-
forcement (Fig. 54).(10) Remove brake lamp switch.Discard original
switch; it must not be reused.(Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING - EXTERIOR/BRAKE
LAMP SWITCH - REMOVAL)
(11) Remove upper and lower steering column
shrouds. (Refer to 19 - STEERING/COLUMN/
LOWER SHROUD - REMOVAL)
Fig. 53 Lower Steering Column Cover And
Reinforcement
1 - INSTRUMENT PANEL
2 - REINFORCEMENT PLATE
3 - LOWER STEERING COLUMN COVER/KNEE BLOCKER
Fig. 54 Instrument Panel Lower Left Reinforcement
1 - INSTRUMENT PANEL LOWER REINFORCEMENT
2 - STEERING WHEEL
3 - LOWER LEFT REINFORCEMENT
5 - 40 BRAKES - BASERS
MASTER CYLINDER (Continued)

INSTALLATION
(1) Install adjustable pedals assembly under
instrument panel.
(2) Attach throttle cable to accelerator pedal using
cable retainer.
(3) Install two upper mounting bolts attaching
pedals assembly to steering column support bracket
on dash panel.Do not fully tighten at this time.
(4) Install four nuts attaching pedals assembly and
power brake booster to dash panel (Fig. 61).
(5) Tighten four booster mounting nuts and two
upper mounting bolts to 28 N´m (21 ft. lbs.) torque.
(6) Route pedal adjuster cable up and over right
side of pedals assembly and steering column bracket,
then down through hole in steering column bracket
as shown (Fig. 60). Attach end of cable to gear box.
(7) Place adjuster cable through loop on right side
of steering column bracket as shown (Fig. 60).
(8) Install booster input rod onto brake pedal pin
and install a NEW retaining clip.
(9) Connect wiring connector connecting vehicle
wiring harness to pedal wiring harness (Fig. 58).
(10) Connect routing clips retaining vehicle wiring
harness to pedal wiring harness (Fig. 58).
(11) Install brake lamp switch bracket on pedals
assembly. Tighten mounting nuts to 6 N´m (50 in.
lbs.) torque.
(12) Install dash seal silencer shell over steering
column intermediate shaft and fasten in place (Fig.
57).
(13) Install steering column onto lower mounting
studs with nuts started, then install column onto
upper mounting studs and install two upper mount-
ing nuts. Tighten upper, then lower mounting nuts to
12 N´m (105 in. lbs.) torque.
(14) Install column shaft coupling onto intermedi-
ate shaft and install pinch bolt. Make sure rounded
side of intermediate shaft is matched to the curva-
ture of the coupling. Tighten pinch bolt to 28 N´m
(250 in. lbs.) torque.
(15) Remove retainer holding steering wheel in
place on steering column.
(16) Attach shift cable to bracket on column.
(17) Connect shift cable end to shift lever mecha-
nism pin (Fig. 55).
(18) If equipped, connect PRNDL cable to end of
shift lever mechanism pin and column bracket (Fig.
55).(19) Connect column wiring harness connectors (as
equipped) to SKIM, BTSI solenoid, ignition switch,
multi-function switch, and clockspring.
(20) Install lower and upper steering column
shrouds. (Refer to 19 - STEERING/COLUMN/
LOWER SHROUD - INSTALLATION)
CAUTION: Do not reuse the original brake lamp
switch. The switch can only be adjusted once. That
is during initial installation of the switch. If the
switch is not adjusted properly or has been
removed for some service, a new switch must be
installed and adjusted.
(21) Install and adjust NEW brake lamp switch.
(Refer to 8 - ELECTRICAL/LAMPS/LIGHTING -
EXTERIOR/BRAKE LAMP SWITCH - INSTALLA-
TION)
(22) Install instrument panel lower left reinforce-
ment (Fig. 54).
(23) Attach hood release to lower left reinforce-
ment.
(24) Install knee blocker reinforcement plate (Fig.
53).
(25) Connect parking brake release link to release
handle.
(26) Install data link diagnostic connector to
mounting hole in reinforcement plate.
(27) Install lower steering column cover/knee
blocker (Fig. 53).
(28) Install throttle cable onto throttle body lever.
(Refer to 14 - FUEL SYSTEM/FUEL INJECTION/
THROTTLE CONTROL CABLE - INSTALLATION)
NOTE: When reconnecting the battery on a vehicle
that has had the airbag module removed, the fol-
lowing procedure should be used.
(29) Reconnect ground cable to negative post of
battery following special Diagnosis And Testing pro-
cedure. (Refer to 8 - ELECTRICAL/RESTRAINTS -
DIAGNOSIS AND TESTING)
(30) Test operation of adjustable pedals and all
functions that are steering column operated. If appli-
cable, reset radio and clock.
(31) Road test the vehicle to ensure proper opera-
tion of steering and brake systems.
RSBRAKES - BASE5-43
PEDALS - ADJUSTABLE (Continued)

PROPORTIONING VALVE SPECIFICATIONS
WHEEL
BASEDRIVE
TRAINSALES
CODEBRAKE
SYSTEMSPLIT
POINTSLOPEINLET
PRESSURE
PSIOUTLET
PRESSURE
PSI
SWB FWD BRB-BGF159DISC/
DRUM W/O
ANTILOCKVAR. 0.59 1000 PSI 675-875 PSI
REMOVAL - PROPORTIONING VALVE (HEIGHT
SENSING)
(1) Using a brake pedal depressor, move and lock
the brake pedal to a position past its first 1 inch of
travel. This will prevent brake fluid from draining
out of the master cylinder when the brake tubes are
removed from the proportioning valve.
(2) Raise vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE).
CAUTION: Before removing the brake tubes from
the proportioning valve, the proportioning valve and
the brake tubes must be thoroughly cleaned. This is
required to prevent contamination from entering the
proportioning valve or the brake tubes.
(3) Remove the four brake tubes from the inlet and
outlet ports of the proportioning valve (Fig. 81).
(4) Remove the two bolts attaching the proportion-
ing valve and bracket to the vehicle (Fig. 81).
(5) Slide the bracket out from under rear track bar
bracket. Lower the valve down enough to pull itsactuator rod out of the axle bracket and remove the
proportioning valve from the vehicle.INSTALLATION - PROPORTIONING VALVE
(HEIGHT SENSING)
(1) Install the end of the actuator rod through the
axle bracket grommet and slide the proportioning
valve bracket under the rear track bar body bracket
(Fig. 81).
(2) Install the proportioning valve attaching bolts
(Fig. 81). Tighten the attaching bolts to a torque of
54 N´m (40 ft. lbs.).
(3) Install the four chassis brake lines into the
inlet and outlet ports of the proportioning valve (Fig.
81). Tighten all tube nuts to a torque of 17 N´m (145
in. lbs.).
CAUTION: The height sensing proportioning valve
is not adjustable. No attempt should be made to
adjust it.
(4) Bleed the brake system thoroughly to ensure
that all air has been expelled from the hydraulic sys-
tem. (Refer to 5 - BRAKES - BASE - STANDARD
PROCEDURE).
(5) Lower the vehicle to the ground.
(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.
Fig. 81 PROPORTIONING VALVE MOUNTING
1 - LEFT REAR OUTLET TUBE
2 - RIGHT REAR OUTLET TUBE
3 - RIGHT REAR INLET TUBE
4 - MOUNTING BOLTS
5 - LEFT REAR INLET TUBE
RSBRAKES - BASE5-55
PROPORTIONING VALVE (Continued)

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 to 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTOR - SPECIFICA-
TIONS)
If runout is not within specifications, reface or
replace the brake rotor. (Refer to 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTORS - STANDARD
PROCEDURE)
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 to 5 - BRAKES/HY-
DRAULIC/MECHANICAL/ROTOR - SPECIFICATIONS)
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
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
5 - 58 BRAKES - BASERS
ROTOR (Continued)

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.
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
RSBRAKES - BASE5-59
ROTOR (Continued)