1999 DODGE RAM wheel torque

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

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)\

CAUTION: Clutch disc may contain asbestos fibers which can cause
serious health risk. DO NOT sand clutch components. DO NOT
clean components using compressed air. To clean components,
use a water-dampened cloth.
Removal
With transmission and clutch housing removed, mark pressure
plate and flywheel for reassembly reference. Install clutch aligner in
clutch disc to prevent disc from falling. Loosen pressure plate bolts
evenly and in rotation to avoid warping pressure plate. Remove
pressure plate and disc from flywheel. See Fig. 10.
Inspection
1) Check for oil leakage through engine rear main bearing oil
seal and transaxle input shaft seal. Check flywheel and pressure plate
for burned areas, discoloration, cracks, grooves or ridges. Replace as
necessary.
2) Use medium sandpaper (80-180 grade) to clean flywheel
surface, then wipe with mineral spirits. DO NOT flat-machine flywheel
surface. Check facing surfaces for grease or oil contamination. Check
clutch disc for wear. Clutch disc face-to-rivet head distance should
be at least .008" (.20 mm). Check splines of disc hub and transaxle
input shaft.
3) Using straightedge, check pressure plate. Friction area
should be flat to slightly concave, with the inner diameter about 0-.
0039" (0-0.1 mm) less than outer diameter. Using surface plate, check
clutch cover for flatness. Sections around bolt holes should contact
surface plate within .015" (.38 mm). Ensure cover-to-flywheel dowel
fit is snug. Replace clutch assembly as necessary.
NOTE: Before installing clutch disc, ensure flywheel mating
surface, pilot bearing/bushing and clutch release bearing are
in satisfactory condition. Repair and/or replace components
as necessary.
Installation
To install, reverse removal procedure using clutch aligner.
Ensure reference marks are aligned. Tighten pressure plate retaining
bolts evenly a few threads at a time to prevent warpage. See TORQUE
SPECIFICATIONS table.
Fig. 10: Exploded View Of Clutch Assembly (Typical)
Courtesy of Chrysler Corp.
PILOT BEARING, CLUTCH RELEASE BEARING & FORK

TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS








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Application Ft. Lbs. (N.m)\
Clutch Master Cylinder Nuts ................................ 40 (54)\
Clutch Slave Cylinder Nuts ................................. 17 (23)\
Crossmember-To-Frame Bolts
AX15 & NV3500 (Dakota) ..................................... 30 (41\
)
NV3500 (Ram Pickup) ........................................ 50 (68\
)
Crossmember-To-Transmission Insulator Nuts
2WD (NV3500 - Ram Pickup) ................................ 50 (68\
)
4WD (NV3500 - Ram Pickup) .......................... 40-45 (54-61\
)
Flywheel Bolts
Dakota 2.5L ................................................ 70 (95)\
Dakota V6 & V8 ............................................. 55 (75)\
Pressure Plate Bolts
5/16" .................................................... 17 (23)\
3/8" ..................................................... 30 (41)\
Transfer Case To Transmission Nuts
AX15 ................................................. 26 (35 N.m)\
NV3500, NV4500, NV4500HD & NV5600
5/16" ............................................. 22-30 (30-41)\
3/8" .............................................. 30-35 (41-47)\
Transmission-To-Clutch Housing Bolts
AX15 ..................................................... 27 (37)\
NV3500 (Ram Pickup) & NV5600 ....................... 40-45 (54-61\
)
NV1500, NV3500 (Dakota), NV4500 & NV 4500HD ............. 80 (108\
)
"U" Joint Clamp Bolts ...................................... 14 (19)\
INCH Lbs. (N.m)
Shift Tower Bolts (NV3500) ............................ 62-89 (7-10\
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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

AXLE ASSEMBLY SPECIFICATIONS
AXLE ASSEMBLY SPECIFICATIONS








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Application Specification
Ring Gear Backlash ......................... .005-.008" (.13-.20 mm)\
Ring Gear Backlash Variation .................... ( 1) .002" (.05 mm)
Pinion Bearing Preload
New Bearings ........................... 15-35 INCH Lbs. (2-5 N.m)\
Used Bearings .......................... 10-20 INCH Lbs. (1-2 N.m)\
( 1) - Maximum variation from ring gear backlash measured at
minimum point on ring gear. If ring gear backlash is
.005" (.15 mm) at minimum point, ring gear backlash should
not exceed .007" (.18 mm) anywhere on ring gear.









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TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS








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Applications Ft. Lbs. (N.m)\
ABS Sensor Bolt ................................................ ( 1)
Axle Nut ................................................. 175 (237)\
Ball Joint Stud Nut
216 FBI
Lower .................................................. 80 (109)\
Upper .................................................. 75 (102)\
248 FBI
Lower
1st Time .............................................. 35 (48)\
2nd Time .................................... 140-160 (190-217)\
Upper ................................................... 70 (95)\
Bearing Cap Bolt .......................................... 80 (109)\
Differential Cover Bolt .................................... 30 (41)\
Pinion Nut
216 FBI ........................................ 160-200 (217-271)\
248 FBI ........................................ 215-280 (292-380)\
Ring Gear Bolt
216 FBI ........................................... 70-90 (95-122)\
248 FBI ........................................ 120-140 (163-190)\
Shift Motor Mounting Bolt ...................................... ( 1)
Wheel Bearing Nut ........................................ 125 (170)\
( 1) - Tighten nuts to 96 INCH lbs. (11 N.m).









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DRIV E A XLE S - P O W ER -L O K

1999 D odge P ic ku p R 1500
1998-99 DRIVE AXLES
CHRY - Power-Lok
Ram Pickup
IDENTIFICATION
POWER-LOK DIFFERENTIAL APPLICATION








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Application Axle Ring Axle
Model Gear Size Ratio
Ram Pickup ........ Rear Axle ... 10.5" (266.7 mm) ..... 267 RBI\









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NOTE: For rear axles with limited-slip differentials, see TRAC-LOK
article.
DESCRIPTION & OPERATION
A Rear Beam-Design Iron (RBI) axle is an iron casting axle
and differential housing with axle shaft tubes extending from either
side. Tubes are pressed to form a one-piece full-floating axle
housing.
Power-Lok differential assembly is optional equipment. The
differential assembly is a limited-slip type differential. It is
similar in operation to a conventional type differential, except for 2
clutch packs located at the side gears in the differential case. See
Fig. 1 . Clutch packs provide differential action when required for
turning corners, and transmit equal torque to both wheels when driving
straight ahead.
AXLE RATIO & IDENTIFICATION
Axle ratio can be identified by axle identification tag
attached to axle housing cover. See AXLE RATIO SPECIFICATIONS table.
AXLE RATIO SPECIFICATIONS









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Application Ratio
Ram Pickup ......................................... 3.54:1 & 4.10:1









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WARNING: Whenever rotating wheels, DO NOT use engine to rotate
individual wheels unless both rear wheels are off ground and
vehicle is securely supported.
LUBRICATION
CAPACITY
DRIVE AXLE CAPACITY ( 1)








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Application Pts. (L)\
Ram Pickup ........................................... ( 2) 7.0 (3.3)