Jeep Cherokee 2000 Service Manual - page 1674
CLEANING AND INSPECTION
NV231 TRANSFER CASE
Clean the transfer case parts with a standard
parts cleaning solvent. Remove all traces of sealer
from the cases and retainers with a scraper and 3M
all purpose cleaner. Use compressed air to remove
solvent residue from oil feed passages in the case
halves, retainers, gears, and shafts.
The oil pickup screen can be cleaned with solvent.
Shake excess solvent from the screen after cleaning
and allow it to air dry. Do not use compressed air.
MAINSHAFT/SPROCKET/HUB INSPECTION
Inspect the splines on the hub and shaft and the
teeth on the sprocket (Fig. 80). Minor nicks and
scratches can be smoothed with an oilstone. However,
replace any part that is damaged.
Check the contact surfaces in the sprocket bore
and on the mainshaft. Minor nicks and scratches can
be smoothed with 320–400 grit emery cloth but do
not try to salvage the shaft if nicks or wear is severe.
INPUT GEAR AND PLANETARY CARRIER
Check the teeth on the gear (Fig. 81). Minor nicks
can be dressed off with an oilstone but replace the
gear if any teeth are broken, cracked, or chipped. The
bearing surface on the gear can be smoothed with
300–400 grit emery cloth if necessary.
Examine the carrier body and pinion gears for
wear or damage. The carrier will have to be replaced
as an assembly if the body, pinion pins, or pinion
gears are damaged.
Check the lock ring and both thrust washers for
wear or cracks. Replace them if necessary. Also
replace the lock retaining ring if bent, distorted, or
broken.
Fig. 80 Mainshaft, Mode Hub, And Drive Sprocket
1 – MODE HUB
2 – DRIVE SPROCKET
3 – MAINSHAFT
4 – MODE HUB RETAINING RING
Fig. 79 Slinger Boot Installation
1 – SPECIAL TOOL C-4975–A
2 – SLINGER
3 – BOOT
4 – CLAMP
XJ
NV231 TRANSFER CASE
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CLEANING AND INSPECTION (Continued)