Dodge RAM 1500 1998 Owner's Manual page 2215

21 - 512 TRANSFER CASE - NV244 GENII
TRANSFER CASE - NV244 GENII
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 512
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 513
DIAGNOSIS AND TESTING - TRANSFER
CASE - NV244 . . . . . . . . . . . . . . . . . . . . . . . 513
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 514
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . 523
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . 523
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . 525
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 534
SPECIFICATIONS
TRANSFER CASE - NV244 GENII
SPECIAL TOOLS
TRANSFER CASE - NV244 GENII
EXTENSION HOUSING SEAL
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 536
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 536
TRANSFER CASE - NV244
GENII
DESCRIPTION
The NV244 GENII is an electronically controlled
full and part-time transfer case with no two wheel
drive operation.
A differential in the transfer case is used to control
torque transfer to the front and rear axles. A low
range gear reduction system provides increased low
speed torque capability for off road operation. The
low range provides a 2.72:1 reduction ratio.
The geartrain is mounted in two aluminum case
halves attached with bolts. The mainshaft front and
rear bearings are mounted in aluminum retainer
housings bolted to the case halves.
OPERATING RANGES
NV244 GENII operating ranges are:
• AWD(All-Wheel Drive)
• 4HI (Part-time)
• 4LO
• NEUTRAL
The AWD mode can be used at any time and on
any road surface.
TRANSFER CASE - NV244 GENII
TABLE OF CONTENTS
. . . . . . . . 535
. . . . . . . . 535
page
FLUID
STANDARD PROCEDURE - FLUID DRAIN AND
REFILL
FRONT OUTPUT SHAFT SEAL
REMOVAL
INSTALLATION
MODE SENSOR
DESCRIPTION
OPERATION
SELECTOR SWITCH
DESCRIPTION
OPERATION
SHIFT MOTOR
DESCRIPTION
OPERATION
REMOVAL
INSTALLATION
The 4HI (Part-time) and 4LO ranges are for off
road use only. The only time these ranges can be
used is when the road surface is covered with snow,
ice, or other loose slippery material.
SHIFT MECHANISM
Operating
mounted shift selector switch. The shift selector
switch provides a input to the Transfer Case Control
Module (TCCM) to indicate the driver's desire to
change operating ranges. The TCCM uses this input,
along with the input from the transfer case mounted
mode sensor and information from the vehicle's bus,
to determine if a shift is permitted. If the TCCM
decides the shift is permitted, the TCCM controls the
shift motor, mounted to the exterior of the transfer
case, to perform the shift.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 537
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 537
. . . . . . . . . . . . . . . . . . . . . . . . 538
. . . . . . . . . . . . . . . . . . . . . . . . 538
. . . . . . . . . . . . . . . . . . . . . . . . . . 539
. . . . . . . . . . . . . . . . . . . . . . . . 539
. . . . . . . . . . . . . . . . . . . . . . . . . . 540
. . . . . . . . . . . . . . . . . . . . . . . . 541
. . . . . . . . . . . . . . . . . . . . . . . . . . 541
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 541
. . . . . . . . . . . . . . . . . . . . . . . . 541
ranges are selected
DR
page
with a dash