Condition |
Possible Cause |
Correction |
Transfer case difficult to shift or will
not shift into desired range. |
- Vehicle speed to great to permit
shifting.
- If vehicle was operated for an
extended period in 4H mode on dry
surface, driveline torque load may
cause difficulty.
- Transfer case shift linkage
binding.
- Insufficient or incorrect lubricant.
- Internal transfer case
components binding, worn, or
damaged.
|
- Slow vehicle and shift into
desired range.
- Stop vehicle and shift transfer
case to Neutral position. Transfer
case can then be shifted to the
desired mode.
- Repair or replace linkage as
necessary.
- Drain and refill transfer case with
the correct type and quantity of
lubricant.
- Repair or replace components as
necessary.
|
Transfer case noisy in all drive
modes. |
- Insufficient or incorrect lubricant.
|
- Drain and refill transfer case with
the correct type and quantity of
lubricant.
|
Transfer case noisy while in, or
jumps out of, 4L mode. |
- Transfer case not completely
engaged in 4L position.
- Transfer case shift linkage out of
adjustment.
- Transfer case shift linkage loose
or binding.
- Range fork damaged, inserts
worn, or fork is binding on the shift
rail.
- Low range gear worn or
damaged.
|
- Slow vehicle, shift transfer case
to the Neutral position, and then
shift into the 4L mode.
- Adjust linkage as necessary.
- Repair, replace, or tighten linkage
components as necessary.
- Repair or replace components as
necessary.
- Repair or replace components as
necessary.
|
Lubricant leaking from transfer case
seals or vent. |
- Transfer case overfilled.
- Transfer case vent closed or
restricted.
- Transfer case seals damaged or
installed incorrectly.
|
- Drain lubricant to the correct
level.
- Clean or replace vent as
necessary.
- Replace suspect seal.
|
Abnormal tire wear. |
- Extended operation in 4H mode
on dry surfaces,
|
- Operate vehicle in 2H mode on
dry surfaces.
|