CALIPER
CAUTION: DO NOT allow caliper to hang by brake hose. Damage to brake
hose could result.
Removal
Raise and support vehicle. Remove front wheels. Remove
caliper guide pins from steering knuckle or mounting bolts from
caliper adapter. Rotate lower end of caliper away from rotor. Slide
upper end of caliper from steering knuckle or caliper adapter. Remove
outer pad from caliper. Remove inner pad from caliper piston. See
Fig. 2 . Support caliper aside. Remove rotor. See ROTOR.
Fig. 2: Exploded View Of Single-Piston (75 mm) Sliding Caliper
(Typical)
Courtesy of Chrysler Corp.
Installation
1) Clean caliper and adapter slide surfaces using wire brush.
Lubricate with multipurpose grease. Remove protective paper from noise
suppression gasket on inner and outer pads (if equipped). Install
anti-rattle clip on top of adapter (if equipped). Install inner pad in\
caliper piston. Install outer pad in caliper. Install rotor. Install
caliper assembly. Install and tighten caliper guide pins (or mounting
bolts) to specification. See TORQUE SPECIFICATIONS table.
2) If caliper overhaul was necessary, install brake hose.
Bleed brake system. See BLEEDING BRAKE SYSTEM. Install wheels. Fill
master cylinder to proper level. Slowly pump brake pedal until firm.
Check master cylinder fluid level. Road test vehicle.
ROTOR
CAUTION: DO NOT allow caliper to hang by brake hose.
Inspection
1) Raise and support vehicle. Remove wheels. On Dakota 4WD,
reinstall and tighten lug nuts to secure rotor. On Dakota 2WD, Ram
Pickup and Ram Van, remove dust cap, and temporarily adjust wheel
bearings to zero end play.
2) On all models, mount dial indicator on steering arm, with
plunger contacting rotor about 1" (25 mm) from edge of rotor. Slowly
rotate rotor, and note lateral runout. Lateral runout on either side
of rotor should not exceed specification. See DISC BRAKE
SPECIFICATIONS.
3) On Dakota, check runout of hub face if runout exceeds
specification. Before removing rotor, make a chalk mark across rotor
and one wheel stud. Make mark on high side of runout.
4) Remove rotor from hub. Install dial indicator on steering
arm, with stem contacting hub face near outer diameter. Place dial
indicator stem outside stud circle but inside chamfer on hub rim. If
runout exceeds specification See DISC BRAKE SPECIFICATIONS. Hub must
be replaced.
5) If hub runout is within specification, install rotor on
hub with chalk marks 180 degrees apart. Install wheel lug nuts, and
recheck rotor runout. If runout is not within specification, resurface
or replace rotor.
6) On all models, measure rotor parallelism. To measure
parallelism, measure rotor thickness with micrometer at 12 equal
points around rotor radius approximately 1" (25 mm) from edge of
rotor. If thickness varies more than parallelism specification,
resurface or replace rotor. See DISC BRAKE SPECIFICATIONS.
Removal (Dakota 2WD, Ram Pickup 2WD (5 Studs), & Ram Van)
Raise and support vehicle. Remove wheels. Remove brake
caliper from adapter. Support caliper aside. Remove grease cap, cotter
pin, nut lock, nut, thrust washer and outer wheel bearing. Pull rotor
assembly off spindle.
Installation
1) Slide rotor assembly into position on spindle. Pack and
install outer wheel bearing, thrust washer and nut. While rotating
rotor and hub assembly, tighten wheel bearing nut to specification.
See TORQUE SPECIFICATIONS table.
2) Back off nut to release preload. Retighten nut finger
tight. Install nut lock and cotter pin. Coat inside of cap with
grease, and install cap. To complete installation, reverse removal
procedure.
Removal (Ram Pickup With Tapered Bearings)
1) Raise and support vehicle. Remove wheel. Remove brake
caliper and adapter. Support caliper aside. Remove grease cap and
driving hub snap ring. Remove drive hub and spacer.
2) On models with removable adapter hub, remove hub from
rotor. On models with one-piece hub and rotor assembly, remove grease
cap, cotter pin and bearing adjuster nut. Remove thrust washer and
outer wheel bearing. Remove rotor and hub assembly from spindle.
Installation
1) Apply liberal coat of wheel bearing grease to spindle.
Install hub and rotor on spindle. Pack and install outer bearing.
Install thrust washer and bearing adjuster nut. Tighten nut only
enough to remove end play at his time.
2) Install caliper. DO NOT seat caliper pistons and brake
pads at this time. On models with removable hub, install hub on rotor.
Install wheel and tire assembly. Tighten lug nuts so they are snug,
but DO NOT tighten to final torque specifications.
3) While rotating wheel, tighten adjuster nut sufficiently to
seat bearing. Loosen nut and retighten while still rotating wheel.
Back off adjuster nut to completely release bearing preload torque.
Ensure endplay of .001-.003" (.025-.076 mm). Install lock nut and NEW
cotter pin. If necessary, tighten lock nut slightly to align cotter
pin hole. Install grease cap. Tighten caliper bolts and lug nuts to
specification. See TORQUE SPECIFICATIONS table. To complete
installation, reverse remove procedure.
Removal (Ram Pickup With 8 Studs)
1) Raise and support vehicle. Remove wheel. Remove hub
extension, if equipped. Remove brake caliper. Support caliper aside.
2) On models with removable adapter hub, remove hub from
rotor. On models with one-piece hub and rotor assembly, remove cotter
pin from rotor hub nut. Remove nut. Disconnect ABS wheel speed sensor
wire (if equipped), and remove from frame and steering knuckle. Remove\
bolts securing hub to steering knuckle from inboard side of steering
knuckle. Remove rotor and hub assembly.
Installation
1) Apply anti-seize compound to drive shaft splines. Replace
grease seal in steering knuckle, if necessary. Insert 2 rearmost top
and bottom rotor hub bolts in steering knuckle so they extend through
back of knuckle. Install hub spacer, ensuring flat on space is
positioned to rear. Use chassis grease to hold spacer in position, if
necessary.
NOTE: If equipped with wheel speed sensor, brake shield must be
positioned on hub bearing, and sensor wire must be at top of
knuckle.
2) Align rotor hub with drive shaft and install hub assembly.
Align bolt holes in hub flange with bolts previously installed. Start
nuts on flange bolts sufficiently to hold assembly in place. Install
remaining bolts, and tighten all bolts to specification. See TORQUE
SPECIFICATIONS table.
3) Install washer and hub nut. Tighten nut securely. Install
NEW cotter pin. Install grease cap. Install caliper. Tighten caliper
bolts and lug nuts to specification. See TORQUE SPECIFICATIONS table.
To complete installation, reverse remove procedure.
REAR BRAKE SHOES
WARNING: Use water or brake cleaner to clean brake parts. DO NOT use
compressed air to remove dirt and dust.
Removal (Dakota & Ram Van)
1) Remove wheel and drum. Note how secondary spring overlaps
primary return spring. Using spring remover, remove brake shoe return
springs. Slide automatic adjuster cable off anchor. Disconnect cable
from adjusting lever.
2) Remove cable, cable guide and anchor plate. See Figs. 3,
4, and 5. Disconnect adjusting lever return spring from lever. Remove
lever and return spring from pivot pin. Remove shoe-to-shoe spring.
Spread shoes, and remove adjustment star wheel.
3) Remove shoe retainers, springs and pins. Remove parking
brake lever from secondary shoe. Remove shoes and parking brake strut
with spring.
CRUIS E C O NTR O L S YSTE M
1999 D odge P ic ku p R 1500
1999 ACCESSORIES & EQUIPMENT
CHRY - Cruise Control Systems
Dakota, Durango, Ram Pickup, Ram Van & Ram Wagon
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may exist
until computer systems have completed a relearn cycle. See
COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION
before disconnecting battery.
DESCRIPTION
The speed (cruise) control system is electronically
controlled and vacuum operated. The electronic control is integrated
into the Powertrain Control Module (PCM). System consists of the
following components: Powertrain Control Module (PCM), servo, speed
control switches, vacuum reservoir, vehicle speed sensor, speed
control relay and brake switch.
System controls are located on each side of steering wheel
air bag module and consist of ON/OFF, SET, RESUME/ACCEL, CANCEL AND
COAST buttons. System is designed to operate at speeds above 30 MPH.
OPERATION
SYSTEM CONTROLS
To Set Speed Control
Press ON/OFF button to turn speed control system on.
Accelerate to desired speed (minimum of 35 MPH) and press SET/COAST
button. Vehicle speed will be maintained.
NOTE: Speed control system will automatically disengage when
vehicle speed decreases to less than 35 MPH or increases to
more than 85 MPH.
To Disengage Speed Control
Press brake pedal. Press clutch pedal (M/T). Press CANCEL
button. Press ON/OFF button. If ON/OFF button is used, set speed will
be erased from memory.
To Resume Previous Speed
If set speed has not been erased from memory and vehicle
speed is more than 35 MPH, press RES/ACCEL button.
To Increase Speed
With speed control system on, increase set speed by rapidly
pressing and releasing RES/ACCEL button. Each pressing of button will
cause speed increase of 2 MPH. For example, pressing button 3 times
will increase speed by 6 MPH. To increase speed gradually, hold
RES/ACCEL button down until desired speed is reached. When button is
released, new set speed will be maintained.
To Decrease Speed
With speed control system on, decrease set speed by pressing
SET/COAST button. Vehicle speed will gradually decrease. Releasing
button will set a new speed as long as vehicle speed is still more
than 35 MPH.
voltage. If voltage is less than one volt, go to next step. If voltage
is one volt or more, condition to set FTC is not present at this time.
Test is complete.
2) While observing scan tool, disconnect S/C ON/OFF switch.
If S/C switch voltage changes to 5 volts, replace S/C ON/OFF switch.
Perform TEST VER-4A under VERIFICATION TESTS. If voltage does not
change to 5 volts, go to next step.
3) While observing scan tool, disconnect S/C RESUME/ACCEL
switch. If S/C switch voltage changes to 5 volts, replace S/C
RESUME/ACCEL switch. Perform TEST VER-4A under VERIFICATION TESTS. If
voltage does not change to 5 volts, go to next step.
4) Turn ignition off. Ensure both S/C switches are still
disconnected. Using an ohmmeter, check resistance between S/C switch
connector terminals (S/C switch signal circuit and S/C switch ground
circuit). If resistance is less than 5 ohms, repair short circuit.
Perform TEST VER- 4A under VERIFICATION TESTS. If resistance is 5 ohms
or more, go to next step.
5) Disconnect clockspring 4-pin connector. Clockspring 4-pin
connector is located behind steering wheel. Inspect connector. Clean
or repair as necessary. Using an ohmmeter, check resistance between
ground and S/C switch signal circuit at clockspring connector (Dark
Green/Red wire on all models except Ram Van and Ram Wagon; wire color
is not available for Ram Van and Ram Wagon). If resistance is less
than 5 ohms, repair short to ground. Perform TEST VER-4A under
VERIFICATION TESTS. If resistance is 5 ohms or more, go to next step.
6) Disconnect PCM. Inspect connectors. Clean or repair as
necessary. Using an ohmmeter, check resistance between ground and S/C
switch signal circuit at either S/C switch connector (Dark Green/Red
wire on all models except Ram Van and Ram Wagon; wire color is not
available for Ram Van and Ram Wagon). If resistance is less than 5
ohms, repair short to ground. Perform TEST VER-4A under VERIFICATION
TESTS. If resistance is 5 ohms or more, replace PCM. Perform TEST VER-
4A under VERIFICATION TESTS.
FTC P1683: SPEED CONTROL POWER RELAY CIRCUIT
FTC P1683 will set if Speed Control (S/C) power supply
circuit is open or shorted when S/C is turned on.
Possible Causes:
* Brake switch out of adjustment.
* S/C brake switch output circuit open or shorted.
* Defective S/C servo.
* Defective brake switch.
* S/C vacuum or vent solenoid control circuits open or
shorted.
* Defective PCM.
* Ground circuit open.
* S/C power supply circuit open.
NOTE: For component locations, see COMPONENT LOCATIONS. For
connector terminal identification, see CONNECTOR
IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS.
NOTE: Ensure brake pedal is not depressed during the following
steps.
1) Turn ignition off. Disconnect S/C servo connector. Inspect
connector. Clean or repair as necessary. Turn ignition on. Using scan
tool, actuate S/C relay. Using a 12-volt test light, probe S/C brake
switch output circuit at S/C servo connector terminal No. 3 (Dark
Blue/Red wire). If test light is illuminated and bright, go to next
FLUID TYPE
Use SAE 80W-90 or 90W hypoid gear lubricant with MIL-L-2105-C
and API GL-5 ratings.
TROUBLE SHOOTING
NOTE: See appropriate table in TROUBLE SHOOTING article in GENERAL
INFORMATION.
REMOVAL & INSTALLATION
AXLE SHAFT & HUB BEARING
Removal
1) Raise and support vehicle. Remove wheel. Remove brake
caliper with hose attached, and secure aside. DO NOT allow brake
caliper to hang by brake hose. Remove brake rotor. Remove ABS wheel
speed sensor (if equipped). Remove grease cap from center of front
hub. Remove cotter pin from end of axle shaft. Remove axle nut and
washer.
2) Remove hub/bearing assembly-to-knuckle bolts. Remove
hub/bearing assembly from steering knuckle and axle shaft. Remove
brake dust shield. To remove right (passenger-side) axle shaft,
carefully pull axle shaft from axle housing.
NOTE: Left axle shaft will disengage from collar located on
intermediate axle shaft.
3) To remove left (driver's side) axle shaft, disconnect
electrical connector and vacuum hoses at vacuum shift motor. Remove
bolts, vacuum shift motor and gasket. Carefully pull axle shaft from
axle housing and collar on intermediate axle shaft.
Installation
1) Install NEW oil seal on axle shaft with seal lip facing
toward splines on differential end of axle shaft. Coat seal lip with
wheel bearing grease.
2) Install right axle shaft into axle housing. Ensure axle
shaft engages with side gears in differential.
3) To install left axle shaft, ensure collar is engaged with
splines on intermediate axle shaft. Install left axle shaft into axle
housing. Ensure axle shaft engages with splines on collar. Install
vacuum shift motor, ensuring fork on vacuum shift motor engages groove
on collar. Install and tighten bolts to specification. See TORQUE
SPECIFICATIONS table.
4) To complete installation, reverse removal procedure. Apply
silicone rubber sealant to edge of grease cap before installing.
Tighten bolts/nuts to specification. See TORQUE SPECIFICATIONS table.
DRIVE SHAFT
Removal
1) Raise and support vehicle. Ensure transmission and
transfer selector levers case are in Neutral. Reference mark drive
shaft and pinion flange for reassembly reference.
2) Remove bolts and "U" joint straps at pinion flange. Remove
center carrier bearing bolts (if equipped). Remove drive shaft.
CAUTION: The "U" joint components are not serviceable. Replace
complete assembly. DO NOT reuse.
Installation
To install, reverse removal procedure using NEW "U" joint
straps and bolts. Ensure all reference marks are aligned. Tighten
bolts to specification. See TORQUE SPECIFICATIONS table.
PINION FLANGE & OIL SEAL
Removal
1) Raise and support vehicle. Reference mark drive shaft and
pinion flange on differential for reassembly. Remove bolts and "U"
joint straps at pinion flange on differential. Disconnect drive shaft
from differential, and support it aside.
2) Using INCH-lb. torque wrench, measure amount of force
required to rotate pinion. This is pinion bearing preload. Record
pinion bearing preload for reassembly reference.
3) Remove pinion nut and washer from pinion. Scribe reference
mark on pinion flange and pinion for reassembly. Using Holder (C-3281)\
and appropriate flange remover, remove pinion flange from pinion.
Remove oil seal from axle housing.
Installation
1) Ensure oil seal surface in axle housing is clean. Coat lip
of oil seal with gear lube. Using appropriate oil seal installer and
handle, install oil seal.
2) Install pinion flange on pinion with reference mark
aligned. Press pinion flange onto pinion. Install washer and pinion
nut. Tighten pinion nut while rotating pinion, ensuring bearings are
properly seated. Tighten nut until preload measured before disassembly
is achieved. DO NOT exceed maximum torque specification. See TORQUE
SPECIFICATIONS table.
3) To install remaining components, reverse removal procedure
using NEW "U" joint straps and bolts. Ensure all reference marks are
aligned. Tighten bolts to specification. See TORQUE SPECIFICATIONS
table. Check lubricant level and add if necessary.
AXLE HOUSING ASSEMBLY
NOTE: Removing axle housing assembly is not necessary unless axle
housing is damaged. Differential carrier and components can
be serviced by removing differential assembly from axle
housing.
Removal
1) Raise and support vehicle. Remove front wheels. Reference
mark drive shaft to pinion flange for reassembly. Remove bolts and "U"
joint straps at pinion flange. Remove drive shaft, and support aside.
Remove brake calipers, and support aside with wire. DO NOT allow
calipers to hang from brake hoses.
2) Disconnect ABS sensor harness connectors (if equipped).
Disconnect drag link and tie rod from steering knuckles. Disconnect
shock absorber from axle housing. Disconnect stabilizer bar links at
spring brackets.
3) Disconnect electrical connector and vacuum hoses at vacuum
shift motor. Support axle housing assembly with floor jack. Remove
bolts from upper and lower suspension arms. Lower axle housing
assembly from vehicle and remove.
Installation
To install, reverse removal procedure. Ensure reference marks
on drive shaft and pinion flange align. Tighten suspension arms with
vehicle at normal operating height. Tighten bolt/nuts to
specification. See TORQUE SPECIFICATIONS table. Check axle fluid level
VEHICLE SPEED SENSORS
VENTS
VIBRATION DAMPERS
WHEEL ATTACHMENT HARDWARE
WHEEL SPEED SENSORS
WIRING HARNESSES AND CONNECTORS
YOKES AND SLIP YOKES
INTRODUCTION TO MOTORIST ASSURANCE PROGRAM (MAP)
OVERVIEW OF MOTORIST ASSURANCE PROGRAM
The Motorist Assurance Program is the consumer outreach
effort of the Automotive Maintenance and Repair Association, Inc.
(AMRA). Participation in the Motorist Assurance Program is drawn from
retailers, suppliers, independent repair facilities, vehicle
manufacturers and industry associations.
Our organization's mission is to strengthen the relationship
between the consumer and the auto repair industry. We produce
materials that give motorists the information and encouragement to
take greater responsibility for their vehicles-through proper,
manufacturer-recommended, maintenance. We encourage participating
service and repair shops (including franchisees and dealers) to adopt
(1) a Pledge of Assurance to their Customers and (2) the Motorist
Assurance Program Standards of Service. All participating service
providers have agreed to subscribe to this Pledge and to adhere to the
promulgated Standards of Service demonstrating to their customers that
they are serious about customer satisfaction.
These Standards of Service require that an inspection of the
vehicle's (problem) system be made and the results communicated to the\
customer according to industry standards. Given that the industry did
not have such standards, the Motorist Assurance Program successfully
promulgated industry inspection communication standards in 1994-95 for
the following systems: Exhaust, Brakes, ABS, Steering and Suspension,
Engine Maintenance and Performance, HVAC, and Electrical Systems.
Further, revisions to all of these inspection were recently published.
Further, revisions to all of these inspection communication standards
are continually republished. In addition to these, standards for Drive
Train and Transmissions have recently been promulgated. Participating
shops utilize these Uniform Inspection & Communication Standards as
part of the inspection process and for communicating their findings to
their customers.
The Motorist Assurance Program continues to work
cooperatively and proactively with government agencies and consumer
groups toward solutions that both benefit the customer and are
mutually acceptable to both regulators and industry. We maintain the
belief that industry must retain control over how we conduct our
business, and we must be viewed as part of the solution and not part
of the problem. Meetings with state and other government officials
(and their representatives), concerned with auto repair and/or
consumer protection, are conducted. Feedback from these sessions is
brought back to the association, and the program adjusted as needed.
To assure auto repair customers recourse if they were not
satisfied with a repair transaction, the Motorist Assurance Program
offers mediation and arbitration through MAP/BBB-CARE and other non-
profit organizations. MAP conducted pilot programs in twelve states
before announcing the program nationally in October, 1998. During the
pilots, participating repair shops demonstrated their adherence to the
Pledge and Standards and agreed to follow the UICS in communicating
the results of their inspection to their customers. To put some
"teeth" in the program, an accreditation requirement for shops was
initiated. The requirements are stringent, and a self-policing method