Jeep Wrangler TJ. Manual — part 521
(5) Place front case in horizontal position. Then
remove input gear and low range gear as an assem-
bly (Fig. 28). Tap gear out of bearing with plastic
mallet if necessary.
INPUT AND LOW RANGE GEAR
(1) Remove snap-ring that retains input gear in
low range gear (Fig. 29).
(2) Remove retainer (Fig. 30).
(3) Remove front tabbed thrust washer (Fig. 31).
(4) Remove input gear (Fig. 32).
Fig. 29 Input Gear Snap-Ring Removal
1 - CARRIER LOCK RETAINING RING
2 - INPUT GEAR
3 - PLANETARY CARRIER
4 - SCREWDRIVER
Fig. 30 Input Gear Retainer Removal
1 - INPUT GEAR
2 - LOW RANGE GEAR
3 - RETAINER
Fig. 31 Front Tabbed Thrust Washer Removal
1 - FRONT TABBED THRUST WASHER
Fig. 32 Input Gear Removal
1 - INPUT GEAR
2 - LOW RANGE GEAR
Fig. 28 Input Gear And Planetary Carrier Removal
1 - PLANETARY ASSEMBLY
2 - INPUT GEAR
21 - 174
TRANSFER CASE - NV231
TJ
TRANSFER CASE - NV231 (Continued)
(5) Remove rear tabbed thrust washer from low
range gear (Fig. 33).
CLEANING
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.
INSPECTION
MAINSHAFT/SPROCKET/HUB
Inspect the splines on the hub and shaft and the
teeth on the sprocket (Fig. 34). 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. 35). 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. 34 Mainshaft, Mode Hub, And Drive Sprocket
1 - MODE HUB
3 - MAINSHAFT
2 - DRIVE SPROCKET
4 - MODE HUB RETAINING RING
Fig. 33 Rear Tabbed Thrust Washer Removal
1 - LOW RANGE GEAR
2 - REAR TABBED THRUST WASHER
TJ
TRANSFER CASE - NV231
21 - 175
TRANSFER CASE - NV231 (Continued)
SHIFT FORKS/HUBS/SLEEVES
Check condition of the shift forks and mode fork
shift rail (Fig. 36). Minor nicks on the shift rail can
be smoothed with 320-400 grit emery cloth.
Inspect the shift fork wear pads (Fig. 37). The
mode fork pads are serviceable and can be replaced if
necessary. The range fork pads are not serviceable.
The fork must be replaced as an assembly if the pads
are worn or damaged.
Check both of the sleeves for wear or damage,
especially on the interior teeth. Replace the sleeves if
wear or damage is evident.
Fig. 35 Input Gear And Carrier Components
1 - PLANETARY CARRIER
4 - CARRIER LOCK RING
2 - REAR THRUST WASHER
5 - CARRIER LOCK RETAINING RING
3 - FRONT THRUST WASHER
6 - INPUT GEAR
Fig. 36 Shift Forks
1 - RANGE FORK
2 - MODE FORK AND RAIL
3 - MODE SPRING
Fig. 37 Shift Fork And Wear Pad Locations
1 - RANGE FORK
2 - MODE FORK
3 - WEAR PADS (SERVICEABLE)
4 - WEAR PADS (NON-SERVICEABLE)
21 - 176
TRANSFER CASE - NV231
TJ
TRANSFER CASE - NV231 (Continued)
REAR RETAINER/BEARING/ SEAL/SLINGER/BOOT
Inspect the retainer components (Fig. 38). Replace
the bearing if rough or noisy. Check the retainer for
cracks or wear in the bearing bore. Clean the
retainer sealing surfaces with a scraper and 3M™ all
purpose cleaner. This will ensure proper adhesion of
the sealer during reassembly.
An output shaft slinger is used on some vehicles,
while an output shaft damper is used on other vehi-
cles. The output shaft slinger and seal should be
replaced outright; do not reuse either part.
Replace any part if distorted, bent, or broken. Also
replace the boot if cut or torn. Replace the boot band
clamps, do not reuse them.
Fig. 38 Rear Retainer Without Output Shaft Damper
1 - REAR RETAINER
5 - BAND CLAMPS
2 - REAR BEARING I.D. MAINSHAFT RETAINING RING
6 - REAR SLINGER
3 - REAR SEAL
7 - REAR BEARING O.D. RETAINING RING
4 - BOOT
8 - REAR BEARING
TJ
TRANSFER CASE - NV231
21 - 177
TRANSFER CASE - NV231 (Continued)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст