Page 2545 of 2889
(8) Apply MopartSilicone Sealer to threads of
input retainer bolts. Then install and tighten bolts to
27-34 N´m (20-25 ft. lbs.) torque.
MAINSHAFT
(1) Install drive sprocket on mainshaft (Fig. 64).
(2)
Install brass stop ring on drive sprocket (Fig. 65).
(3) Install 3 synchronizer struts and 2 springs in
hub as follows:
(a) Insert first strut in hub (Fig. 66). Strut
shoulders rest (and slide) on sides hub slot as
shown.
Fig. 65 Synchronizer Stop Ring Installation
1 - BRASS STOP RING
2 - DRIVE SPROCKET
Fig. 66 Installing First Synchronizer Strut And
Spring
1 - FIRST STRUT
2 - SYNCHRONIZER HUB
3 - SPRING
Fig. 63 Input Bearing Retainer Installation
1 - FRONT CASE
2 - INPUT BEARING RETAINER
Fig. 64 Drive Sprocket Installation
1 - MAINSHAFT
2 - DRIVE SPROCKET
21 - 910 TRANSFER CASE - NV241HDBR/BE
TRANSFER CASE - NV241HD (Continued)
Page 2546 of 2889

(b) Insert hooked end of first spring in center of
strut to secure it. Then work spring into hub (Fig.
67).
(c) Press spring inward and insert last two
struts in hub slots. Be sure spring is positioned
under struts to properly secure them (Fig. 68).
(d) Turn hub over and install remaining spring
in hub. Position hooked end of second spring oppo-
site the first spring's hooked end.
(4) Install assembled synchronizer hub on main-
shaft (Fig. 69). Hub has shoulder on one side which
goes toward sprocket (rear of shaft). Flat side of hub
faces front of shaft.
(5) Install synchronizer hub retaining ring (Fig.
70). Be sure ring is fully seated before proceeding.
Fig. 67 Synchronizer Spring Installation
1 - STRUT SHOULDER
2 - SPRING (SEATED IN STRUT)
3 - HUB
Fig. 68 Correct Position Of Struts And Springs
1 - STRUTS
2 - SPRING
Fig. 69 Synchronizer Hub Installation
1 - SYNCHRONIZER HUB (SHOULDER SIDE DOWN)
2 - STOP RING AND SPROCKET
Fig. 70 Synchronizer Hub Retaining Ring
Installation
1 - SNAP-RING PLIERS
2 - SYNCHRONIZER HUB
3 - HUB RETAINING RING
BR/BETRANSFER CASE - NV241HD 21 - 911
TRANSFER CASE - NV241HD (Continued)
Page 2547 of 2889

(6) Install sliding clutch (sleeve) on synchronizer
hub (Fig. 71).
CAUTION: The sliding clutch must be correctly
positioned to ensure proper shifting. Position the
clutch on the hub so a clutch spline is centered
over each strut as shown (Fig. 72). If the clutch is
installed so a gap between splines is aligned with
one or more struts, gear clash will result.
SHIFT FORKS AND MAINSHAFT
(1) Support front case on wood blocks so case inte-
rior is facing up. Place blocks between mounting
studs on forward surface of case. Be sure blocks will
not interfere with input gear installation.
(2) Lubricate mainshaft components with trans-
mission fluid.
(3) Lubricate sector shaft with transmission fluid
and install shift sector in case (Fig. 73). Position slot
in sector so it will be aligned with shift fork pin
when shift forks are installed.
Fig. 71 Sliding Clutch Installation
1 - SLIDING CLUTCH
2 - SYNCHRONIZER HUB
Fig. 72 Correct Alignment Of Struts And Sliding
Clutch
1 - SLEEVE TOOTH ALIGNED WITH STRUT
2 - STRUT
3 - SLEEVE TOOTHNOTALIGNED WITH STRUT
4 - STRUT
Fig. 73 Shift Sector Installation
1 - SHIFT SECTOR
2 - SECTOR SHAFT
21 - 912 TRANSFER CASE - NV241HDBR/BE
TRANSFER CASE - NV241HD (Continued)
Page 2548 of 2889
(4) Assemble range fork and sliding hub (Fig. 74).
Then install fork and hub in case. Seat hub on sup-
port sleeve and seat range fork pin in shift sector slot
(Fig. 75).
(5) Install sliding hub retaining ring (Fig. 76). Be
sure ring is fully seated before proceeding.
(6) Install mode fork and shift rail in sliding clutch
(Fig. 77).
Fig. 74 Assembling Range Fork And Sliding Hub
1 - RANGE FORK
2 - SLIDING HUB
Fig. 75 Seating Range Fork And Hub
1 - RANGE FORK
2 - RANGE FORK PIN
3 - SECTOR SLOT
4 - SHIFT SECTOR
Fig. 76 Sliding Hub Retaining Ring Installation
1 - RETAINING RING
2 - RANGE FORK
3 - SLIDING HUB
Fig. 77 Assembling Mode Fork And Mainshaft
1 - SLIDING CLUTCH
2 - MODE FORK AND SHIFT RAIL
BR/BETRANSFER CASE - NV241HD 21 - 913
TRANSFER CASE - NV241HD (Continued)
Page 2549 of 2889

(7) Install mainshaft/mode fork assembly (Fig. 78).
Guide mainshaft through hub and into input gear
and shift rail through range fork and into case bore.
(8) Install new o-ring on vacuum/indicator switch,
if necessary. Install vacuum/indicator switch (Fig.
79). Tighten switch to 20-34 N´m (15-25 ft. lbs.)
torque.
(9) Install new sector shaft o-ring and o-ring
retainer in sector shaft bore (Fig. 80). Lubricate
o-ring with transmission fluid or petroleum jelly after
installation.(10) Install shift lever on sector shaft (Fig. 81).
(11) Install washer and nut on sector shaft to
secure shift lever. Apply 1-2 drops MopartLock N'
Seal, or equivalent, to nut threads before installation.
Then tighten nut to 27-34 N´m (20-25 ft. lbs.) torque.
Fig. 78 Installing Mainshaft And Mode Fork
Assembly
1 - MAINSHAFT AND MODE FORK ASSEMBLY
2 - SHIFT RAIL
3 - RANGE FORK
Fig. 79 Vacuum/Indicator Switch Installation
1 - 1-1/16º SOCKET
2 - INDICATOR SWITCH
Fig. 80 Sector Shaft O-Ring And Retainer
Installation
1 - SECTOR SHAFT BORE
2 - O-RING
3 - O-RING RETAINER
Fig. 81 Shift Lever Installation
1 - SHIFT LEVER
2 - NUT/WASHER
21 - 914 TRANSFER CASE - NV241HDBR/BE
TRANSFER CASE - NV241HD (Continued)
Page 2550 of 2889

(12) Install poppet plunger and spring (Fig. 82).
(13) Install new o-ring on poppet screw and install
screw in front case (Fig. 83). Tighten screw to 16-24
N´m (12-18 ft. lbs.).
FRONT OUTPUT SHAFT AND DRIVE CHAIN
(1) Install front output shaft in bearing (Fig. 84).
(2) Insert front sprocket in drive chain (Fig. 85).
(3) Install drive chain around mainshaft sprocket
(Fig. 85). Then position front sprocket over front
shaft.
(4) Raise mainshaft about 2.54 cm (one inch) and
seat front sprocket on front output shaft.
(5) If mainshaft and sliding clutch were unseated
during chain installation, align and reseat mainshaft
in input gear and hub. Then reseat synchronizer hub
in sliding clutch. Press synchronizer struts inward to
ease clutch back onto hub.
Fig. 82 Poppet Plunger And Spring Installation
1 - POPPET PLUNGER AND SPRING
Fig. 83 O-Ring Installation On Poppet Plunger
Screw
1 - O-RING
2 - PLUNGER SCREW
Fig. 84 Front Output Shaft Installation
1 - FRONT OUTPUT SHAFT
2 - BEARING
Fig. 85 Drive Chain And Front Sprocket Installation
1 - DRIVE SPROCKET
2 - DRIVE CHAIN
3 - FRONT SPROCKET
4 - FRONT SHAFT
BR/BETRANSFER CASE - NV241HD 21 - 915
TRANSFER CASE - NV241HD (Continued)
Page 2551 of 2889

(6) Install front sprocket retaining ring (Fig. 86).
(7) Realign sliding clutch on synchronizer hub if
necessary. Press synchronizer struts inward to ease
realignment. Be sure mainshaft is fully seated before
proceeding.
(8) Install spring and cup on shift rail (Fig. 87).
(9) Insert magnet in front case pocket (Fig. 88).
OIL PUMP AND REAR CASE
Lubricate the oil pump components before installa-
tion. Prime the oil pickup tube by pouring a little oil
into the tube before installation.
(1) Install new o-ring in pickup tube inlet of oil
pump (Fig. 89).
(2) Position oil pickup tube and filter in rear case.
Be sure pickup filter is seated in case pocket and
that pickup tube is aligned in case notches (Fig. 90).
Be sure hose that connects tube to filter is securely
positioned.(3) Insert oil pickup tube in oil pump and position
pump in rear case (Fig. 91).
Fig. 86 Front Sprocket Retaining Ring Installation
1 - FRONT SPROCKET
2 - RETAINING RING
Fig. 87 Shift Rail Spring And Cup Installation
1 - CUP
2 - SPRING
Fig. 88 Case Magnet Installation
1 - MAGNET
2 - CASE POCKET
Fig. 89 Pickup Tube O-Ring Installation
1 - O-RING (PUMP PICKUP)
2 - PICKUP TUBE
Fig. 90 Oil Pickup Tube And Filter Position In Rear
Case
1 - FILTER
2 - TUBE AND HOSE
3 - TUBE IN NOTCH
21 - 916 TRANSFER CASE - NV241HDBR/BE
TRANSFER CASE - NV241HD (Continued)
Page 2552 of 2889

(4) Apply bead of MopartGasket Maker, or equiv-
alent, to mating surface of front case. Keep sealer
bead width to maximum of 3/16 inch. Do not use
excessive amount of sealer as excess will be displaced
into case interior.
(5) Align oil pump with mainshaft and align shift
rail with bore in rear case. Then install rear case and
oil pump assembly (Fig. 92). Be sure oil pump and
pickup tube remain in position during case installa-
tion.
(6) Install 4-5 rear case-to front case bolts to hold
rear case in position. Tighten bolts snug but not to
specified torque at this time.
CAUTION: Verify that shift rail (Fig. 93), and case
alignment dowels are seated before installing any
bolts. Case could be cracked if shaft rail or dowels
are misaligned.
(7) Verify that oil pump is aligned and seated on
rear case. Reposition pump if necessary.
Fig. 91 Positioning Oil Pump In Rear Case
1 - OIL PUMP
2 - REAR CASE
3 - FILTER
4 - PICKUP TUBE
Fig. 92 Rear Case And Oil Pump Installation
1 - MAINSHAFT
2 - OIL PUMP
3 - REAR CASE
Fig. 93 Shift Rail Seated In Rear Case Bore
1 - REAR CASE
2 - SHIFT RAIL
BR/BETRANSFER CASE - NV241HD 21 - 917
TRANSFER CASE - NV241HD (Continued)