1998 DODGE RAM 1500 Workshop Manual

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Page 2177 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual SPECIAL TOOLS
TRANSFER CASE NV271/NV273
Handle, Universal - C-4171
Remover - L-4454
Installer, Bearing - 6953
Installer, Pump Housing Seal - 7888
Installer, Bearing - 8128
Cup - 8148
Installer - 8151

Page 2178 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Installer - 8891
Socket - 9033
Installer, Bearing - 9035
Installer, Seal - 9036
Installer, Seal - 9037
DRTRANSFER CASE - NV271 21 - 475
TRANSFER CASE - NV271 (Continued)

Page 2179 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual EXTENSION HOUSING SEAL
AND DUST BOOT
REMOVAL
(1) Raise and support vehicle.
(2) Remove rear propeller shaft. (Refer to 3 - DIF-
FERENTIAL & DRIVELINE/PROPELLER SHAFT/
PROPELLER SHAFT - REMOVAL)
(3) Us

Page 2180 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual (6) Fill transfer case to bottom edge of fill plug
opening with MopartATF +4, Automatic Transmis-
sion fluid.
(7) Install and tighten fill plug to 41-54 N´m
(30-40 ft. lbs.).
(8) Lower vehicle.
FRONT

(6) Fill transfer case to bottom edge of fill plug
opening with MopartATF +4, Automatic Transmis-
sion fluid.
(7) Install and tighten fill plug to 41-54 N´m
(30-40 ft. lbs.).
(8) Lower vehicle.
FRONT OUTPUT SHAFT SEAL
REMOVAL
(1) Remove the front propeller shaft (Refer to 3 -
DIFFERENTIAL & DRIVELINE/PROPELLER
SHAFT/PROPELLER SHAFT - REMOVAL).
(2) Install two bolts 180É apart into the front out-
put shaft companion flange.
(3) Place holder over the bolts and against the
companion flange (Fig. 94).
(4) Remove and discard the front companion flange
nut.
(5) Remove the companion flange from the front
output shaft. It may be necessary to use Flange
puller 8992 to remove the companion flange.
(6) Using a screw and a slide hammer, remove the
front output shaft seal.
INSTALLATION
(1) Install the new front output shaft seal with
Installer MB991168A.
(2) Install the front companion flange onto the
front output shaft.
(3) Install two bolts 180É apart into the front out-
put shaft companion flange.(4) Place holder over the bolts and against the
companion flange (Fig. 95).
(5) Install a new front companion flange nut.
Tighten the companion flange nut to 258-312 N´m
(190-230 ft.lbs.).
(6) Install front propeller shaft (Refer to 3 - DIF-
FERENTIAL & DRIVELINE/PROPELLER SHAFT/
PROPELLER SHAFT - INSTALLATION).
POSITION SENSOR
DESCRIPTION
The transfer case position sensor is an electronic
device whose output can be interpreted to indicate
the transfer case's current operating mode. The sen-
sor consists of a five position, resistive multiplexed
circuit which returns a specific resistance value to
the Powertrain Control Module (PCM) for each trans-
fer case operating mode. The sensor is located on the
top of the transfer case, just left of the transfer case
centerline and rides against the sector plate rooster-
comb. The PCM supplies 5VDC (+/- 0.5V) to the sen-
sor and monitors the return voltage to determine the
sector plate, and therefore the transfer case, position.
OPERATION
During normal vehicle operation, the Powertrain
Control Module (PCM) monitors the transfer case
position sensor return voltage to determine the oper-
ating mode of the transfer case. Refer to the Operat-
ing Mode Versus Resistance table for the correct
resistance for each position (Fig. 96).
Fig. 94 Remove Companion Flange Nut
1 - HOLDER 6719
2 - BOLTS
Fig. 95 Install Companion Flange Nut
1 - HOLDER 6719
2 - BOLTS
DRTRANSFER CASE - NV271 21 - 477
FLUID (Continued)

Page 2181 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual OPERATING MODE VERSUS RESISTANCE
SENSOR POSITION OPERATING MODE SENSOR RESISTANCE (ohms)
1 2H 1172-1195
2 4H 677-691
3 NEUTRAL 406-415
4 4L 208-213
5 NOT USED 60-61
REMOVAL
(1) Raise and support the v

Page 2182 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual SHIFT LEVER
REMOVAL
(1) Shift transfer case into 2H.
(2) Raise and support the vehicle.
(3) Loosen adjusting trunnion lock bolt and slide
shift rod out of trunnion. If rod lacks enough travel
to come

Page 2183 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual INSTALLATION
(1) If the shifter mechanism does not have a
adjustment locating pin installed, align the adjust-
ment channel on the shifter assembly to the locating
hole in the lower shift lever and in

Page 2184 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual ADJUSTMENTS
ADJUSTMENT - SHIFT LEVER
(1) Move shift lever into 2H position.
(2) Raise vehicle.
(3) Loosen shift rod lock bolt at trunnion.
(4) Check shift rod fit in trunnion. Be sure rod
does not bin

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