Page 1697 of 2198
(7) Install snap ring on new input gear bearing.
(8) Install new input gear bearing with shop press
and wood block. Install bearing far enough to seat
snap ring against case (Fig. 41).
(9) Remove input gear pilot bearing with slide
hammer and internal puller (Fig. 42).
Fig. 38 Starting Front Output Shaft Seal Into Case
Bore
Fig. 39 Front Output Seal Installation Depth
Fig. 40 Input Gear Bearing Removal
Fig. 41 Seating Input Gear Bearing
Fig. 42 Input Gear Pilot Bearing Removal
21 - 320 NP242 TRANSFER CASEJ
Page 1698 of 2198
(10) Install new pilot bearing with Tool Handle
C-4171 and Installer 5065 (Fig. 43).
(11) Assemble low range gear, input gear thrust
washers, input gear and input gear retainer (Fig. 44).
(12) Install low range gear snap ring (Fig. 45).
(13) Lubricate input gear and low range gears with
automatic transmission fluid.
(14) Start input gear shaft into front case bearing.
(15) Press input gear shaft into front bearing.CAUTION: Be sure the input gear installer tool is
the proper size. The wrong size tool could push the
input gear pilot bearing too far into the gear bore
(Fig. 46). Also, do not press against the end sur-
faces of the low range gear. The gear case and
thrust washers could be damaged.
Fig. 43 Input Gear Pilot Bearing Installation
Fig. 44 Low Range And Input Gear Assembly
Fig. 45 Install Low Range Gear Snap Ring
Fig. 46 Input Gear Installation
JNP242 TRANSFER CASE 21 - 321
Page 1699 of 2198
(16) Install new input gear snap ring (Fig. 47).
(17) Install new seal in front bearing retainer with
Tool Handle C-4171 and Installer 7884 (Fig. 48).(18) Apply 3 mm (1/8 in.) wide bead of Mopar gasket
maker. silicone adhesive sealer, or Loctite 518 to seal
surface of front bearing retainer.
(19) Install front bearing retainer (Fig. 49).
Tighten retainer bolts to 16 ft. lbs. (21 Nzm) torque.
(20) Install new sector shaft O-ring and bushing
(Fig. 50).
(21) Install shift sector.
Fig. 47 Input Gear Snap Ring Installation
Fig. 48 Front Bearing Retainer Seal Installation
Fig. 49 Installing Front Bearing Retainer
Fig. 50 Sector O-Ring And Bushing Installation
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Page 1700 of 2198
(22) Install new pads in low range fork (Fig. 51).
(23) Assemble low range fork and hub (Fig. 51).
(24) Position low range fork and hub in case. Be
sure low range fork pin is engaged in shift sector slot
(Fig. 52).
(25) Lubricate differential components with auto-
matic transmission fluid.(26) Install sprocket gear in differential bottom case
(Fig. 53).
(27) Install differential planet gears and new
thrust washers (Fig. 54).Be sure thrust washers
are installed at top and bottom of each planet
gear.
(28) Install differential mainshaft gear (Fig. 54).
Fig. 51 Assembling Low Range Fork And Hub
Fig. 52 Positioning Low Range Fork
Fig. 53 Installing Differential Sprocket Gear
Fig. 54 Installing Mainshaft And Planet Gears
JNP242 TRANSFER CASE 21 - 323
Page 1701 of 2198
(29) Align and position differential top case on bot-
tom case (Fig. 55). Align using scribe marks made at
disassembly.
(30) Install and tighten differential case bolts to
specified torque.
(31) Install first mainshaft bearing spacer on
mainshaft (Fig. 56).(32) Install bearing rollers on mainshaft (Fig. 56).
Coat bearing rollers with generous quantity of
petroleum jelly to hold them in place.
(33) Install remaining bearing spacer on mainshaft
(Fig. 56). Do not displace any bearings while install-
ing spacer.
(34) Install differential (Fig. 57).Do not displace
mainshaft bearings when installing differential.
(35) Install differential snap ring (Fig. 58).
Fig. 56 Installing Mainshaft Bearing Rollers and
Spacers
Fig. 55 Differential Case Assembly
Fig. 57 Differential Installation
Fig. 58 Installing Differential Snap Ring
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Page 1702 of 2198
(36) Install intermediate clutch shaft (Fig. 59).
(37) Install clutch shaft thrust washer (Fig. 60).(38) Install clutch shaft snap ring (Fig. 61).
(39) Inspect mode fork assembly (Fig. 62). Replace
pads and bushing if necessary. Replace fork tube if
bushings inside tube are worn or damaged. Also
check springs and slider bracket (Fig. 62). Replace
worn, damaged components.
Fig. 59 Installing Intermediate Clutch Shaft
Fig. 60 Installing Clutch Shaft Thrust Washer
Fig. 61 Installing Clutch Shaft Snap Ring
Fig. 62 Mode Fork Assembly Inspection
JNP242 TRANSFER CASE 21 - 325
Page 1703 of 2198
(40) Install mode sleeve in mode fork (Fig. 63).
Then install assembled sleeve and fork on mainshaft.
Be sure mode sleeve splines are engaged in differen-
tial splines.
(41) Install mode fork and mainshaft assembly in
case (Fig. 64). Rotate mainshaft slightly to engage
shaft with low range gears.
(42) Rotate mode fork pin into shift sector slot.
(43) Install shift rail (Fig. 65).Be sure rail is
seated in both shift forks.
(44) Rotate shift sector to align lockpin hole in low
range fork with access hole in case.
(45) Insert an easy-out in range fork lockpin to
hold it securely for installation (Fig. 66).Lockpin is
slightly tapered on one end. Insert tapered end
into fork and rail.
Fig. 63 Installing Mode Fork And Sleeve
Fig. 64 Assembled Mainshaft And Mode Fork
Installation
Fig. 65 Shift Rail Installation
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Page 1704 of 2198
(46) Insert lockpin through access hole and into
shift fork (Fig. 66). Then remove easy-out and seat
the pin with pin punch.
(47) Install plug in lockpin access hole.
(48) Install transfer case shift lever and attaching
nut. Tighten nut to 30 Nzm (22 ft. lbs.) torque.
(49) Install detent plunger, detent spring and de-
tent plug in case (Fig. 67).(50) Install front output shaft (Fig. 68).
(51) Install drive chain (Fig. 68). Engage chain
with front output shaft sprocket teeth.
(52) Install drive sprocket (Fig. 68).
(53) Engage drive sprocket teeth with chain. Then
engage sprocket splines with mainshaft splines.
(54) Install drive sprocket snap ring (Fig. 69).
Fig. 66 Installing Low Range Fork Lockpin
Fig. 67 Detent Pin, Spring And Plug Installation
Fig. 68 Drive Chain And Sprocket Installation
Fig. 69 Drive Sprocket Snap Ring Installation
JNP242 TRANSFER CASE 21 - 327