Page 2465 of 2895
(4) Remove the companion flange from the front
output shaft. It may be necessary to use Flange
puller 8992 to remove the companion flange.
(5) Use a suitable chisel or pry tool to remove the
rear extension housing dust boot (Fig. 4).
(6) Use a suitable chisel or pry tool to remove the
rear extension housing seal.(7) Remove rear extension bolts (Fig. 5).
(8) Remove rear extension housing (Fig. 6). Tap
extension once or twice with a plastic mallet to break
sealer bead and loosen it.
Fig. 3 Remove Companion Flange Nut
1 - HOLDER 6719
2 - BOLTS
Fig. 4 Remove Extension Housing Dust Boot
1 - EXTENSION HOUSING
2 - DUST BOOT
Fig. 5 Remove Extension Housing Bolts
1 - EXTENSION HOUSING
2 - BOLTS
Fig. 6 Remove Extension Housing
1 - REAR CASE HALF
2 - EXTENSION HOUSING
21 - 626 TRANSFER CASE - NV271DR
TRANSFER CASE - NV271 (Continued)
Page 2466 of 2895
OIL PUMP AND REAR CASE
(1) Disengage the oil pump pick-up tube (Fig. 7)
from the oil pump.
NOTE: The oil pump pick-up tube seals to the oil
pump with an o-ring. Verify that the o-ring was
removed with the tube and is in good condition.
Replace the o-ring if necessary.
(2) Remove the oil pump (Fig. 8).(3) Remove rear case-to-front case bolts (Fig. 9).
(4) Remove the rear output shaft bearing inner
snap-ring (Fig. 10) from the output shaft using suit-
able snap-ring pliers.
Fig. 10 Remove Rear Bearing Inner Snap-Ring
1 - OUTPUT SHAFT
2 - REAR CASE HALF
3 - SNAP-RING
Fig. 7 Disengage The Oil Pick-up From Oil Pump
1 - OIL PUMP
2 - OIL PICK-UP TUBE
Fig. 8 Remove Oil Pump
1 - REAR CASE HALF
2 - REAR OUTPUT SHAFT
3 - OIL PUMP
Fig. 9 Remove Case Half Bolts
1 - FRONT CASE HALF
2 - REAR CASE HALF
3 - BOLTS
DRTRANSFER CASE - NV271 21 - 627
TRANSFER CASE - NV271 (Continued)
Page 2467 of 2895
(5) Remove the rear output shaft bearing inner
snap-ring (Fig. 11) from the output shaft.
(6) Loosen rear case with pry tool to break sealer
bead. Insert tool at each end of case (Fig. 12).(7) Unseat rear case from alignment dowels.
(8) Remove the rear case from the front case (Fig.
13).
FRONT OUTPUT SHAFT AND DRIVE CHAIN
(1) Remove the oil pick-up tube (Fig. 14) and
screen from the front case half.
Fig. 14 Remove Oil Pick-Up Tube and Screen
1 - FRONT CASE HALF
2 - OIL SCREEN
3 - PICK-UP TUBE
Fig. 11 Remove Rear Bearing Inner Snap-Ring
1 - OUTPUT SHAFT
2 - REAR CASE HALF
3 - SNAP-RING
Fig. 12 Separate Front and Rear Case Halves
1 - FRONT CASE HALF
2 - REAR CASE HALF
Fig. 13 Remove Rear Case Half
1 - FRONT CASE HALF
2 - REAR CASE HALF
21 - 628 TRANSFER CASE - NV271DR
TRANSFER CASE - NV271 (Continued)
Page 2468 of 2895
(2) Remove the shift rail spring (Fig. 15).
(3) Remove the front output shaft drive sprocket
retaining ring (Fig. 16).
(4) Remove the rear output shaft drive sprocket
retaining ring (Fig. 17).(5) Pull front sprocket (Fig. 18), rear sprocket, and
chain upward until clear of the front and rear output
shaft sprocket splines.
(6) Remove chain and sprockets as an assembly.
Fig. 15 Remove Shift Rail Spring
1 - SHIFT RAIL
2 - SPRING
Fig. 16 Remove Front Output Shaft Sprocket
Retaining Ring
1 - FRONT OUTPUT SHAFT
2 - DRIVE SPROCKET
3 - RETAINING RING
Fig. 17 Remove Rear Output Shaft Sprocket
Retaining Ring
1 - REAR OUTPUT SHAFT
2 - DRIVE SPROCKET
3 - RETAINING RING
Fig. 18 Remove Drive Chain and Sprockets
1 - FRONT CASE HALF
2 - CHAIN
3 - DRIVE SPROCKETS
DRTRANSFER CASE - NV271 21 - 629
TRANSFER CASE - NV271 (Continued)
Page 2469 of 2895
SHIFT FORKS AND MAINSHAFT
(1) Shift transfer case into NEUTRAL.
(2) Remove nut that retains the shift lever to sec-
tor shaft. Then remove shift lever (Fig. 19) and
spacer from the shaft.
(3) Remove the sector support with Socket 9033.
(4) Remove the transfer case position sensor (Fig.
20).(5) Loosen detent plug (Fig. 21).
(6) Remove detent plug, spring, and plunger (Fig.
22). Note that the plug has an O-ring seal. Remove
and discard this seal.
Fig. 19 Remove Manual Shift Lever
1 - SHIFT SECTOR
2 - SECTOR SUPPORT
3 - MANUAL SHIFT LEVER
Fig. 20 Remove Position Sensor
1 - FRONT CASE
2 - POSITION SENSOR
Fig. 21 Loosen the Detent Plug
1 - FRONT CASE HALF
2 - DETENT PLUG
Fig. 22 Remove Detent plug, Spring, and Plunger
1 - FRONT CASE HALF
2 - DETENT PLUG
3 - SPRING
4 - PLUNGER
21 - 630 TRANSFER CASE - NV271DR
TRANSFER CASE - NV271 (Continued)
Page 2470 of 2895
(7) Using a screw mounted in a slide hammer,
remove the front output shaft seal.
(8) Remove the front output shaft snap-ring (Fig.
23).
(9) Remove front output shaft from bearing in case
(Fig. 24).(10) Pull mainshaft assembly out of input gear,
mode sleeve, and case (Fig. 25).
(11) Remove mode fork, mode sleeve, and shift rail
as assembly (Fig. 26). Note which way the sleeve fits
in the fork (long side of sleeve goes to front or the
points on the sleeve teeth go to the rear of case).
Fig. 23 Remove Front Output Shaft Bearing Inner
Snap-Ring
1 - FRONT CASE HALF
2 - SNAP-RING
Fig. 24 Remove Front Output Shaft
1 - FRONT CASE
2 - FRONT OUTPUT SHAFT
Fig. 25 Remove Mainshaft Assembly
1 - FRONT CASE HALF
2 - MAINSHAFT ASSEMBLY
Fig. 26 Remove Mode Fork, Sleeve, and Shift Rail
Assembly
1 - SHIFT RAIL
2 - MODE FORK
3 - MODE SLEEVE
DRTRANSFER CASE - NV271 21 - 631
TRANSFER CASE - NV271 (Continued)
Page 2471 of 2895
(12) Remove range fork and hub as an assembly
(Fig. 27). Note fork position for installation reference.
(13) Remove shift sector (Fig. 28).MAINSHAFT
(1) Remove the clutch gear (Fig. 29) from the out-
put shaft.
(2) Remove the mode hub retaining ring (Fig. 30)
from the mainshaft.
Fig. 30 Remove Mode Hub Retaining Ring
1 - MAINSHAFT
2 - MODE HUB
3 - RETAINING RING
Fig. 27 Range Fork And Hub Removal
1 - RANGE HUB
2 - RANGE FORK
Fig. 28 Remove Shift Sector
1 - SHIFT SECTOR
Fig. 29 Remove Clutch Gear
1 - OUTPUT SHAFT
2 - CLUTCH GEAR
3 - MODE HUB
21 - 632 TRANSFER CASE - NV271DR
TRANSFER CASE - NV271 (Continued)
Page 2472 of 2895
(3) Remove the mode hub (Fig. 31) from the main-
shaft.
(4) Remove the drive sprocket drive hub (Fig. 32)
from the mainshaft.INPUT AND PLANETARY GEAR
(1) Remove input gear seal with suitable screw
and slide hammer.
(2) Remove input gear retaining ring (Fig. 33) with
heavy duty snap-ring pliers.
(3) Place front case in horizontal position. Then
remove input gear and low range gear as an assem-
bly (Fig. 34). Tap gear out of bearing with plastic
mallet, if necessary.
Fig. 31 Remove Mode Hub
1 - MAINSHAFT
2 - MODE HUB
Fig. 32 Remove the Drive Sprocket Drive Hub
1 - MAINSHAFT
2 - DRIVE SPROCKET DRIVE HUB
Fig. 33 Remove Input Gear Retaining Ring
1 - INPUT GEAR
2 - RETAINING RING
Fig. 34 Remove Input Planetary Assembly
1 - FRONT CASE
2 - INPUT PLANETARY ASSEMBLY
DRTRANSFER CASE - NV271 21 - 633
TRANSFER CASE - NV271 (Continued)