Jeep Cherokee 2000 Service Manual - page 1652
hub. The sleeve and hub are not equipped with a
synchronizer mechanism for shifting.
LUBRICANT AND FILL LEVEL
DESCRIPTION
Recommended lubricant for the NV231 transfer
case is Mopar
t
Dexron II, or ATF Plus 3, type 7176.
Approximate lubricant fill capacity is 1.2 liters (2.5
pints).
The fill and drain plugs are both in the rear case
(Fig. 2). Correct fill level is to the bottom edge of the
fill plug hole. Be sure the vehicle is level to ensure
an accurate fluid level check.
DIAGNOSIS AND TESTING
NV231 DIAGNOSIS
DIAGNOSIS CHART
Condition
Possible Cause
Correction
Transfer case difficult to shift or will
not shift into desired range.
1) Vehicle speed to great to permit
shifting.
1) Slow vehicle and shift into
desired range.
2) If vehicle was operated for an
extended period in 4H mode on dry
surface, driveline torque load may
cause difficulty.
2) Stop vehicle and shift transfer
case to Neutral position. Transfer
case can then be shifted to the
desired mode.
3) Transfer case shift linkage
binding.
3) Repair or replace linkage as
necessary.
4) Insufficient or incorrect lubricant.
4) Drain and refill transfer case with
the correct type and quantity of
lubricant.
5) Internal transfer case
components binding, worn, or
damaged.
5) Repair or replace components as
necessary.
Transfer case noisy in all drive
modes.
1) Insufficient or incorrect lubricant.
1) Drain and refill transfer case with
the correct type and quantity of
lubricant.
Fig. 2 Fill/Drain Plug Locations
1 – I. D. TAG
2 – FILL PLUG
3 – DRAIN PLUG
XJ
NV231 TRANSFER CASE
21 - 347
DESCRIPTION AND OPERATION (Continued)