Jeep cherokee 2000 Service Manual page 1283

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DESCRIPTION AND OPERATION
NV242 TRANSFER CASE. . . . . . . . . . . . . . . . . . 375
LUBRICANT AND FILL LEVEL . . . . . . . . . . . . . . 376
DIAGNOSIS AND TESTING
NV242 DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . 376
REMOVAL AND INSTALLATION
TRANSFER CASE . . . . . . . . . . . . . . . . . . . . . . . 377
SHIFT LEVER . . . . . . . . . . . . . . . . . . . . . . . . . . 377
SPEEDOMETER. . . . . . . . . . . . . . . . . . . . . . . . . 378
FRONT OUTPUT SHAFT SEAL . . . . . . . . . . . . . 379
DESCRIPTION AND OPERATION
NV242 TRANSFER CASE
DESCRIPTION
The NV242 is a full-time transfer case (Fig. 1). It
provides full time 2-wheel, or 4-wheel drive opera-
tion.
A differential in the transfer case is used to control
torque transfer to the front and rear axles. A low
range gear provides increased low speed torque capa-
bility for off road operation. The low range provides a
2.72:1 reduction ratio.
Fig. 1 NV242 Transfer Case
The input gear is splined to the transmission out-
put shaft. It drives the mainshaft through the plan-
etary gear and range hub. The front output shaft is
operated by a drive chain that connects the shaft to a
NV242 TRANSFER CASE
TABLE OF CONTENTS
page
NV242 TRANSFER CASE
DISASSEMBLY AND ASSEMBLY
NV242 TRANSFER CASE. . . . . . . . . . . . . . . . . . 380
CLEANING AND INSPECTION
NV242 TRANSFER CASE. . . . . . . . . . . . . . . . . . 402
ADJUSTMENTS
SHIFT LINKAGE ADJUSTMENT . . . . . . . . . . . . . 405
SPECIFICATIONS
TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405
SPECIAL TOOLS
NV242 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
drive sprocket on the mainshaft. The drive sprocket
is engaged/disengaged by the mode fork, which oper-
ates the mode sleeve and hub. The sleeve and hub
are not equipped with a synchro mechanism for shift-
ing.
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.
TRANSFER CASE IDENTIFICATION
A circular ID tag is attached to the rear case of
each transfer case (Fig. 2). The ID tag provides the
transfer case model number, assembly number, serial
number, and low range ratio.
The transfer case serial number also represents
the date of build.
Fig. 2 Fill/Drain Plug And I. D. Tag Locations
1 - I. D. TAG
2 - FILL PLUG
3 - DRAIN PLUG
21 - 375
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