2001 DODGE RAM Service Repair Manual

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Page 145 of 2889

DODGE RAM 2001 Service Repair Manual PINION GEAR/RING GEAR
REMOVAL
NOTE: The ring and pinion gears are service in a
matched set. Do not replace the ring gear without
replacing the pinion gear.
(1) Raise and support the vehicle.
(2) Remov

Page 146 of 2889

DODGE RAM 2001 Service Repair Manual Fig. 50 Remove Pinion
1 - RAWHIDE HAMMER
Fig. 51 Front Pinion Bearing Cup
1 - REMOVER
2 - HANDLE
Fig. 52 Rear Pinion Bearing Cup
1 - DRIVER
2 - HANDLE
Fig. 53 Collapsible Spacer
1 - COLLAPSIBLE SPACER

Page 147 of 2889

DODGE RAM 2001 Service Repair Manual INSTALLATION
NOTE: Pinion depth shims are placed between the
rear pinion bearing cone and pinion gear to achieve
proper ring and pinion gear mesh. If ring and pinion
gears are reused, the original pin

Page 148 of 2889

DODGE RAM 2001 Service Repair Manual (5) Install pinion seal with an appropriate installer
(Fig. 57).
(6) Install proper thickness depth shim on the pin-
ion gear.
(7) Install rear bearing and oil slinger, if equipped
on pinion gear with

Page 149 of 2889

DODGE RAM 2001 Service Repair Manual (11) Install yoke washer and anewnut on the
pinion gear. Tighten the nut to 291 N´m (215 ft. lbs.)
minimum.Do not over±tighten.Maximum torque
is 380 N´m (280 ft. lbs.).
CAUTION: Never loosen pinion

Page 150 of 2889

DODGE RAM 2001 Service Repair Manual REAR AXLE-91/4
TABLE OF CONTENTS
page page
REAR AXLE-91/4
DESCRIPTION...........................77
OPERATION.............................77
DIAGNOSIS AND TESTING.................80
AXLE...............

REAR AXLE-91/4
TABLE OF CONTENTS
page page
REAR AXLE-91/4
DESCRIPTION...........................77
OPERATION.............................77
DIAGNOSIS AND TESTING.................80
AXLE................................80
REMOVAL..............................83
INSTALLATION...........................84
ADJUSTMENTS..........................84
SPECIFICATIONS........................90
SPECIAL TOOLS.........................90
AXLE SHAFTS
REMOVAL..............................93
INSTALLATION...........................93
AXLE SHAFT SEALS
REMOVAL..............................94
INSTALLATION...........................94
AXLE BEARINGS
REMOVAL..............................94
INSTALLATION...........................95PINION SEAL
REMOVAL..............................95
INSTALLATION...........................95
DIFFERENTIAL
REMOVAL..............................96
DISASSEMBLY...........................97
ASSEMBLY.............................98
INSTALLATION...........................98
DIFFERENTIAL - TRAC-LOK
DIAGNOSIS AND TESTING.................98
TRAC-LOK............................98
DISASSEMBLY...........................99
ASSEMBLY............................101
DIFFERENTIAL CASE BEARINGS
REMOVAL.............................103
INSTALLATION..........................103
PINION GEAR/RING GEAR/TONE RING
REMOVAL.............................103
INSTALLATION..........................105
REAR AXLE-91/4
DESCRIPTION
The 9 1/4 Inch axle housings consist of a cast iron
center section with axle tubes extending from either
side. The tubes are pressed into and welded to the
differential housing to form a one-piece axle housing
(Fig. 1).
The axles have a vent hose to relieve internal pres-
sure caused by lubricant vaporization and internal
expansion.
The axles are equipped with semi-floating axle
shafts, meaning vehicle loads are supported by the
axle shaft and bearings. The axle shafts are retained
by C-locks in the differential side gears.
The removable, stamped steel cover provides a
means for inspection and service without removing
the complete axle from the vehicle.
The axle has a date tag and a gear ratio tag. The
tags are attached to the differential housing by a
cover bolt.
The rear wheel anti-lock (RWAL) brake speed sen-
sor is attached to the top, forward exterior of the dif-
ferential housing. A seal is located between the
sensor and the wire harness connector. The seal must
be in place when the wire connector is connected to
the sensor. The RWAL brake exciter ring is press-fit-ted onto the differential case against the ring gear
flange.
The differential case is a one-piece design. The dif-
ferential pinion shaft is retained with a screw. Differ-
ential bearing preload and ring gear backlash are set
and maintained by threaded adjusters at the outside
of the differential housing. Pinion bearing preload is
set and maintained by the use of a collapsible spacer.
Axles equipped with a Trac-Lokydifferential are
optional. A differential has a one-piece differential
case, and the same internal components as a stan-
dard differential, plus two clutch disc packs.
AXLE IDENTIFICATION
The axle differential cover can be used for identifi-
cation of the axle (Fig. 2). A ratio tag is attached to
the top of the differential cover.
OPERATION
The axle receives power from the transmission/
transfer case through the rear propeller shaft. The
rear propeller shaft is connected to the drive pinion
which rotates the differential through the gear mesh
with the ring gear bolted to the differential case. The
engine power is transmitted to the axle shafts
through the differential pinions and side gears. The
side gears are splined to the axle shafts.
BR/BEREAR AXLE - 9 1/4 3 - 77

Page 151 of 2889

DODGE RAM 2001 Service Repair Manual Fig. 1 9 1/4 Axle
3 - 78 REAR AXLE-91/4BR/BE
REAR AXLE - 9 1/4 (Continued)

Page 152 of 2889

DODGE RAM 2001 Service Repair Manual STANDARD DIFFERENTIAL
During straight-ahead driving, the differential pin-
ion gears do not rotate on the pinion shaft. Thisoccurs because input torque applied to the gears is
divided and distributed

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