1999 DODGE RAM brake

Fig. 3: Identifying Typical Drum Brake Components (Dakota & Ram Van)
Courtesy of Chrysler Corp.
Installation
1) Apply thin coat of multipurpose grease to 6 shoe contact
pads on support plate. Connect parking brake lever to secondary shoe.
Install primary shoe on support plate with shoe pin, spring and
retainer.
2) Install spring on parking brake strut, and engage strut
into primary shoe. Install secondary shoe on support plate with shoe
pin, spring and retainer. Insert strut into slot in parking brake
lever.
3) Install anchor plate and eye of adjusting cable over
anchor. Install primary return spring. Position cable guide over hole
in secondary shoe, and install secondary return spring.
NOTE: To identify left and right adjustment star wheels, unscrew
threaded rod from star wheel. Note stamped "L" or "R" on end
of threaded rod.
4) Install adjustment star wheel with wheel closest to
secondary shoe. Install shoe-to-shoe spring, engaging in primary shoe

first with coil on opposite side of adjusting lever. Install lever
spring and adjusting lever over pivot pin.
5) Slide lever rearward to lock in position. Thread adjuster
cable over guide, and hook end of cable in lever. Verify adjuster
operation. Pull adjuster cable upward. Cable should lift lever and
rotate star wheel. Ensure adjuster lever properly engages star wheel
teeth. Adjust brakes. See REAR BRAKE SHOES under ADJUSTMENTS.
Removal (Ram Pickup)
1) Remove drum. See AXLE BEARING & SEAL (FULL FLOATING AXLE)\
.
Disconnect adjusting lever from cable. Disconnect adjusting lever
return spring from lever. Remove lever, and return spring from pivot
pin. Remove upper shoe-to-shoe spring.
2) Disconnect and remove shoe retainers, springs and hold-
down pins. Disconnect parking brake cable from lever. Remove both
brake shoes, lower shoe-to-shoe spring and adjustment star wheel as an
assembly. See Fig. 4. Remove lower shoe-to-shoe spring.
Fig. 4: Exploded View Of Typical Rear Drum Brake Assembly (Ram
Pickup)
Courtesy of Chrysler Corp.
NOTE: Adjustment star wheel on left brake assembly has left-hand

threads. Right side assembly has right-hand threads.
Installation
1) Lubricate and assemble adjustment star wheel. Apply thin
film of multipurpose grease to shoe contact pads on support plate.
Assemble lower shoe-to-shoe spring, adjustment star wheel and both
shoes. Position shoe assembly on support plate.
2) Attach parking brake cable to lever using NEW "U" clip or
"E" clip. Install shoe hold-down pins, springs and retainers. Install
upper shoe-to-shoe spring. Position adjusting lever return spring on
pivot. Install adjusting lever. Route cable, and connect it to
adjuster. Install drum assembly and wheel. Adjust brakes. See REAR
BRAKE SHOES under ADJUSTMENTS.
WHEEL CYLINDERS
Removal & Installation
1) Remove wheel, drum and brake shoes. Inspect boots for
damage and signs of leakage. Disconnect and plug hydraulic brakeline
from wheel cylinder. Remove attaching bolts, and remove cylinder. See
Fig. 5 .
2) Apply silicone sealant to cylinder mounting surface, and
position cylinder on support plate. Start brakeline fitting in wheel
cylinder. Install and tighten mounting bolts. Tighten brakeline
fitting. To complete installation, reverse removal procedure. Fill
brake fluid reservoir, and bleed hydraulic system. See BLEEDING
PROCEDURES under BLEEDING BRAKE SYSTEM.
Fig. 5: Exploded View Of Rear Wheel Cylinder (Typical)
Courtesy of Chrysler Corp.
MASTER CYLINDER & RESERVOIR
NOTE: Manufacturer does not recommend overhaul of master cylinder.
Removal and replacement of reservoir and grommets are the
only recommended service procedures. Replace master cylinder
if faulty.

Removal & Installation
1) Disconnect and plug primary and secondary brakelines from
master cylinder. Remove master cylinder-to-power brake booster nuts.
Slide master cylinder straight out and away from power brake booster
unit.
2) Ensure reservoir is empty. Install master cylinder in
soft-jaw vise. Pry gently upward between reservoir ports while working
reservoir side to side. Remove reservoir and grommets. See Fig. 6.
3) Install NEW grommets in master cylinder ports. Lubricate
grommets with brake fluid. Firmly and evenly, press reservoir into
grommets by hand.
4) To complete installation, position master cylinder over
studs of power brake booster. Align power cylinder brake push rod with
cylinder piston. Install master cylinder nuts, and tighten to
specification. See TORQUE SPECIFICATIONS table. Connect both
brakelines. Bleed system. See BLEEDING BRAKE SYSTEM.
Fig. 6: Exploded View Of Master Cylinder (Ram Pickup)
Courtesy of Chrysler Corp.
POWER BRAKE BOOSTER
Removal
1) Disconnect vacuum hose from booster check valve. Remove
nuts attaching master cylinder, and move cylinder away from booster.
Inside vehicle, remove booster push rod-to-brake pedal clip. Pry clip
off pedal pivot pin.
2) Remove lock nuts from booster mounting studs. Slide
booster away from dash and out of engine compartment. If booster is

being replaced, remove booster check valve and seal.
Installation
1) If new booster is being installed, install check valve and
seal. Position booster on dash, and install lock nuts on booster
mounting studs finger tight. Install booster push rod on brake pedal
pin, and secure rod with NEW retaining clip.
2) Tighten booster lock nuts to specification. Install master
cylinder on booster, and tighten mounting nuts to specification. See
TORQUE SPECIFICATIONS table. Connect vacuum hose to booster check
valve. Start vehicle and check booster operation.
COMBINATION VALVE
Removal & Installation
Raise and support vehicle. Mark brakelines for assembly
reference. Disconnect parking brake cable from clip on valve, if
necessary. Disconnect brake warning light connection at switch.
Disconnect all brake hydraulic lines at valve. Cap brakelines to
prevent dirt from entering system. Remove valve. To install, reverse
removal procedures. Bleed brake system. See BLEEDING PROCEDURES under
BLEEDING BRAKE SYSTEM.
AXLE BEARING & SEAL (FULL FLOATING AXLE)
Removal & Installation (Ram Pickup With 12" & 13" Drums)
1) Raise and support vehicle. Remove wheel. Remove axle shaft
nuts and washers. Strike center of axle flange to free cones. Remove
axle shaft and gasket.
2) Straighten and remove nut lock. Remove adjustment nut and
outer bearing. Remove drum assembly. Remove seal and inner bearing
from drum assembly.
3) Pack inner bearing, and install inner bearing and seal in
drum. Install drum assembly, outer bearing and adjustment nut. While
rotating drum, tighten adjustment nut to specification. See TORQUE
SPECIFICATIONS table.
4) Back off adjustment nut 1/8 turn to obtain .001-.010" (0.
025-0.254 mm) end play. Bend nut lock into spindle keyway. Install
gasket and axle shaft. Install wheel, and lower vehicle. See TORQUE
SPECIFICATIONS table.
OVERHAUL
NOTE: Use illustrations when overhauling components. See
Figs. 2-6.
DISC BRAKE SPECIFICATIONS
DISC BRAKE SPECIFICATIONS








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Application In. (mm)\
Disc Diameter
Dakota ............................................... 11.30 (287)\
Ram Pickup
1/2 Ton ............................................. 11.57 (294)\
3/4 & 1 Ton ......................................... 12.50 (318)\
Ram Van
1/2 & 3/4 Ton ....................................... 11.75 (299)\
1 Ton ............................................... 12.82 (326)\
Lateral Runout

Dakota & Ram Van ..................................... .004 (.102)\
Ram Pickup ........................................... .005 (.127)\
Parallelism
Dakota & Ram Van .................................... .0005 (.013)\
Ram Pickup ........................................... .001 (.025)\
Original Thickness
Dakota & Ram Van ............................................. (1)
Ram Pickup
1/2 Ton ............................................... 1.26 (32)\
3/4 & 1 Ton ........................................... 1.50 (38)\
Minimum Refinish Thickness ..................................... ( 1)
Dakota ............................................... .890 (22.6)\
Ram Van ................................................ 1.18 (30)\
Ram Pickup
1/2 Ton ............................................ 1.22 (31.00)\
3/4 Ton ............................................ 1.27 (32.26)\
1 Ton .............................................. 1.52 (38.61)\
Discard Thickness .............................................. ( 2)
( 1) - Information is not available from manufacturer.
( 2) - Discard thickness is marked on rotor hub.









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DRUM BRAKE SPECIFICATIONS
DRUM BRAKE SPECIFICATIONS








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Application In. (mm)\
9" Drum
Drum Width ........................................... 2.50 (63.5)\
Maximum Allowable Diameter ........................ 9.060 (230.12)\
Wheel Cylinder Diameter ............................. .750 (19.05)\
10" Drum
Drum Width ........................................... 2.50 (63.5)\
Maximum Allowable Diameter ....................... 10.060 (255.52)\
Wheel Cylinder Diameter ............................. .810 (20.57)\
11" Drum
Drum Width
Ram Pickup (1/2 Ton) ................................ 2.00 (51.0\
)
Ram Van (1/2 & 3/4 Ton) ............................ 2.25 (57.15\
)
Maximum Allowable Diameter ....................... 11.060 (280.92)\
Wheel Cylinder Diameter ............................. .940 (23.88)\
12" Drum
Drum Width
Ram Van (1 Ton) ..................................... 3.50 (88.9\
)
Maximum Allowable Diameter ....................... 12.060 (306.32)\
Wheel Cylinder Diameter
Ram Van
3/4 Ton .......................................... .940 (23.88)\
1 Ton ........................................... 1.060 (27.00)\
13" Drum
Drum Width
Ram Pickup
3/4 Ton ........................................... 2.50 (63.5)\
1 Ton ............................................. 3.50 (89.0)\
Maximum Allowable Diameter ....................... 13.060 (331.72)\
Wheel Cylinder Diameter
Ram Pickup
3/4 Ton .......................................... .940 (23.88)\
1 Ton ............................................. 1.06 (27.0)\









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TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS








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Application Ft. Lbs. (N.m)\
Axle Adjustment Nut .............................. 120-140 (163-190)\
Axle Shaft Flange Or Support Plate Mounting Nuts
Dakota .................................................. 47 (64)\
Ram Pickup ........................................ 35-50 (48-68)\
Ram Van ................................................ 85 (115)\
Bearing/Hub Assembly Mounting Bolts ...................... 125 (170)\
Brake Booster Mounting Nuts
Dakota & Ram Pickup ...................................... 21 (29)\
Ram Van .................................................. 13 (18)\
Brake Hose Front Bolt (Dakota) ............................. 21 (29\
)
Brake Hose Front Fitting (Dakota) .......................... 12 (16\
)
Brake Hose Rear Fitting (Dakota) ........................... 14 (19\
)
Brakeline Fittings Combination Valve
Dakota ................................................... 14 (19)\
Ram Pickup ......................................... 14-17 (19-23)\
Brakeline Fittings Master Cylinder
Dakota ................................................... 14 (19)\
Ram Pickup ......................................... 14-17 (19-23)\
Brakeline Fittings Wheel Cylinder
Dakota ................................................... 12 (16)\
Ram Pickup ............................................... 10 (14)\
Brake Pedal Shaft Nut (Ram Van) ............................ 40 (54\
)
Caliper Adapter Bolts (Ram Van)
1/2 Ton ................................................ 130 (176)\
3/4 & 1 Ton ............................................ 210 (285)\
Caliper Mounting Bolts
Dakota (Guide Pins) ...................................... 22 (30\
)
Ram Pickup ............................................... 38 (52)\
Ram Van .................................................. 24 (33)\
Combination Valve Mounting Bolt (Ram Pickup) ............... 17 (23\
)
Diesel Hydraulic Booster Hoses (Ram Pickup) ................ 23 (31\
)
Diesel Hydraulic Booster Lines (Ram Pickup) ................ 21 (29\
)
Diesel Hydraulic Booster Mounting Bolts (Ram Pickup) ....... 21 (29\
)
Drive Flange Lock Nuts (4WD) ............................... 65 (88\
)
Master Cylinder Nuts
Dakota
1998 .................................................... 21 (29)\
1999 .................................................... 13 (18)\
Ram Pickup ............................................... 21 (29)\
Ram Van .................................................. 17 (23)\
Park Brake Pedal Assembly Mounting Bolts/Nuts
Ram Pickup ............................................... 21 (29)\
Ram Van .................................................. 40 (54)\
Pivot Pin .................................................. 30 (41)\
Power Booster Lock Nuts
Dakota & Ram Pickup ...................................... 21 (29)\
Ram Van .................................................. 13 (18)\
Proportioning Valve Brake Hose (Ram Pickup) ................ 23 (31\
)
Proportioning Valve Brakelines (Ram Pickup) .......... 14-17 (19-23\
)
Proportioning Valve Mounting Nuts (Ram Pickup) ............. 25 (34\
)
Wheel Bearing Outer Lock Nut (4WD) ......................... 65 (88\
)
Wheel Cylinder Mounting Bolts
1/4" Bolts (Dakota) ...................................... 11 (15\
)
5/16" Bolts (Dakota) ..................................... 16 (22\
)
Ram Pickup & Ram Van ..................................... 15 (20)\

CO M PU TE R R ELE A R N P R O CED URES

1999 D odge P ic ku p R 1500
GENERAL INFORMATION
DaimlerChrysler Computer Relearn Procedures
INTRODUCTION
Vehicles equipped with engine or transmission/transaxle
computers may require a computer relearn procedure after the vehicle
battery is disconnected. Vehicle computers memorize and store vehicle
operation patterns for optimum driveability and performance. When the
vehicle battery is disconnected, this memory is lost, resulting in a
driveability problem. Depending on the vehicle and how it is equipped,
the following driveability problems may exist:
* Rough or unstable idle.
* Hesitation or stumble.
* Rich or lean running.
* Poor fuel mileage.
* Harsh or poor transmission/transaxle shift quality.
Default data is used until NEW data from each key start is
stored. As the computer restores its memory from each new key start,
driveability is restored.
Driveability problems may occur during the computer relearn
stage. To accelerate computer relearn process after battery removal
and installation, specified computer relearn procedures should be
performed. See appropriate procedures under specified manufacturer.
COMPUTER RELEARN PROCEDURES
ALL MODELS
NOTE: Read all procedures listed to determine why each procedure is
to be performed before proceeding.
Vehicle Driveability Computer Relearn Procedure
Manufacturer does not provide a specified computer relearn
procedure for obtaining proper driveability. If vehicle battery was
disconnected or Powertrain Control Module (PCM) was replaced, driving
the vehicle will enable the PCM to perform a computer relearn
procedure for obtaining proper driveability. Inform customer that
driveability may differ from what they are accustomed to until the PCM
completes the computer relearn procedure.
NOTE: If Powertrain Control Module (PCM) was replaced, the correct
vehicle mileage and Vehicle Identification Number (VIN) must
be programmed into the PCM to prevent Diagnostic Trouble
Codes (DTCs) from being set in the Anti-Lock Brake System
(ABS) module and Supplemental Restraint System (SRS) module\
.
To program PCM and clear DTCs from ABS and SRS modules,
proceed to appropriate procedure listed. If replacing
Powertrain Control Module (PCM) on models equipped with a
Smart Key Immobilizer Module (SKIM), the secret key data must\
also be updated to enable engine starting. To update secret
key data, proceed to appropriate procedure listed.
Programming PCM & Clearing DTCs From ABS & SRS Modules
Connect scan tool to Data Link Connector (DLC) below driver's\
side of instrument panel. Using scan tool, enter correct VIN and
mileage into PCM. Using scan tool manufacturer's instructions, clear