1998 DODGE RAM 1500 Universal joint

(3) Press bearing cap until snap ring groove (1) is
through the flange (2) (Fig. 30).
(4) Install snap ring (2) on bearing (1) (Fig. 31).(5) Position press (3) with receiver (2) on remain-
ing bearing cap (1) and flange (Fig. 32).
(6) Press bearing cap until snap ring groove is
through the flange.
(7) Install snap ring (1) on bearing cap (2) (Fig.
33).
Fig. 31 SNAP RING
1 - BEARING
2 - SNAP RING
Fig. 32 REMAINING BEARING
1 - BEARING
2 - RECEIVER
3 - PRESS
Fig. 33 SNAP RING
1 - SNAP RING
2 - BEARING
Fig. 34 FLANGE WITH U-JOINT
1 - FLANGE
2 - YOKE
3 - 14 PROPELLER SHAFTDR
SINGLE CARDAN UNIVERSAL JOINTS (Continued)

(8) Install flange (1) with U-joint in yoke (2) (Fig.
34).
(9) Position press (2) with receiver (1) and lower
bearing cap (3) on yoke (Fig. 35).
(10) Press bearing cap until snap ring groove is
through the yoke.
(11) Install snap ring (2) on bearing cap (1) (Fig.
36).(12) Position press (2) with receiver (3) on remain-
ing bearing cap (1) and yoke (Fig. 37).
(13) Press remaining bearing cap until snap ring
groove is through the yoke.
(14) Install snap ring (2) on bearing cap (1) (Fig.
38).
Fig. 35 PRESS ON YOKE
1 - RECEIVER
2 - PRESS
3 - BEARING
Fig. 36 SNAP RING
1 - BEARING
2 - SNAP RING
Fig. 37 REMAINING BEARING
1 - BEARING
2 - PRESS
3 - RECEIVER
Fig. 38 SNAP RING
1 - BEARING
2 - SNAP RING
DRPROPELLER SHAFT 3 - 15
SINGLE CARDAN UNIVERSAL JOINTS (Continued)

DOUBLE CARDAN UNIVERSAL
JOINTS
DISASSEMBLY
(1) Remove propeller shaft.
(2) Mark propeller shaft, link yoke and flange yoke
for assembly reference.
(3) Tap outside of the bearing cap assembly with
drift to loosen snap rings.
(4) Remove all bearing cap snap rings (Fig. 39).
(5) Remove grease fittings if equipped.
(6) Position a socket on the press with an inside
diameter large enough to receive the bearing cap
under the link yoke.
(7) Place another socket with an outside diameter
smaller than the bearing cap on the upper bearing
cap.(8) Press one bearing cap from outboard side of the
link yoke, enough to grasp the cap with vise jaws
(Fig. 40).
(9) Grasp protruding bearing cap with vise jaws
and tap link yoke with a mallet to remove bearing
cap (Fig. 41).
Fig. 39 SNAP RINGS
Fig. 40 PRESS OUT BEARING
Fig. 41 REMOVE BEARING FROM YOKE
3 - 16 PROPELLER SHAFTDR

(10) Flip assembly and repeat Step 6, Step 7, Step
8 and Step 9 to remove the opposite bearing cap.
(11) Remove cross centering kit assembly and
spring (Fig. 42).
(12) Press remaining bearing caps out the other
end of the link yoke.
ASSEMBLY
CAUTION: All alignment marks on the link yoke and
propeller shaft yoke must be aligned during assem-
bled.
(1) Apply (EP) N.L.G.I. Grade 1 or 2 grease to
inside of yoke bores.
(2) Fit cross into the propeller shaft yoke (Fig. 43).(3) Place bearing cap over the trunnion and align
cap with the yoke bore (Fig. 44). Keep needle bear-
ings upright in the bearing cap.
(4) Press bearing cap into yoke bore enough to
clear snap ring groove and install snap-ring (Fig. 45).
Fig. 42 REMOVE CENTERING KIT
Fig. 43 INSTALL CROSS IN YOKE
Fig. 44 INSTALL BEARING CAP
Fig. 45 PRESS IN BEARING CAP
DRPROPELLER SHAFT 3 - 17
DOUBLE CARDAN UNIVERSAL JOINTS (Continued)

(5) Flip propeller shaft yoke and install other bear-
ing cap onto the opposite trunnion and install a snap
ring (Fig. 46).
(6) Fit link yoke onto remaining trunnions and
press both bearing caps into place and install snap
rings (Fig. 47).(7) Install centering kit assembly inside the link
yoke (Fig. 48).
NOTE: Verify spring is properly positioned.
(8) Place two bearing caps on opposite trunnions of
the remaining cross. Fit open trunnions into the link
yoke bores and bearing caps into the centering kit
(Fig. 49).
Fig. 46 PRESS IN BEARING CAP
Fig. 47 INSTALL LINK YOKE
Fig. 48 INSTALL CENTERING KIT
Fig. 49 INSTALL REMAINING CROSS
3 - 18 PROPELLER SHAFTDR
DOUBLE CARDAN UNIVERSAL JOINTS (Continued)

(9) Press remaining two bearing caps into place
and install snap rings (Fig. 50).
(10) Tap snap rings to seat them into the grooves
(Fig. 51).(11) Flexing the joint beyond center, the joint
should snap over-center in both directions if correctly
assembled (Fig. 52).
(12) Install propeller shaft.
Fig. 50 PRESS IN BEARING CAP
Fig. 51 SEAT SNAP RINGS IN GROOVE
Fig. 52 CHECK ASSEMBLY
DRPROPELLER SHAFT 3 - 19
DOUBLE CARDAN UNIVERSAL JOINTS (Continued)

(3) Install the axle shaft.
(4) Install differential cover and fill with gear
lubricant to the bottom of the fill plug hole.
AXLE BEARINGS
REMOVAL
(1) Remove axle shaft.
(2) Remove axle shaft seal from axle tube with a
small pry bar.
NOTE: The seal and bearing can be removed at the
same time with the bearing removal tool.
(3) Remove axle shaft bearing with Bearing
Remover 6310 and Foot 6310-9 (Fig. 24).
INSTALLATION
(1) Wipe the axle tube bore clean. Remove any old
sealer or burrs from the tube.
(2) Install axle shaft bearing with Installer C-4198
and Handle C-4171. Drive bearing in until tool con-
tacts the axle tube.
NOTE: Bearing is installed with the bearing part
number against the installer.(3) Coat the lip of thenewaxle seal with axle
lubricant and install with Installer C-4076-B and
Handle C-4735-1.
NOTE: When tool contacts the axle tube, the seal is
installed to the correct depth.
(4) Install the axle shaft.
(5) Install differential cover and fill with gear
lubricant to the bottom of the fill plug hole.
PINION SEAL
REMOVAL
(1) Mark universal joint, companion flange and
pinion shaft for installation reference.
(2) Remove propeller shaft from the companion
flange.
(3) Remove the brake rotors to prevent any drag.
(4) Rotate companion flange three or four times
and record pinion rotating torque with an inch pound
torque wrench.
(5) Install two bolts into the companion flange
threaded holes, 180É apart. Position Holder 6719A
against the companion flange and install and tighten
two bolts and washers into the remaining holes.
(6) Hold the companion flange with Holder 6719A
and remove pinion nut and washer.
(7) Remove companion flange with Remover C-452
(Fig. 25).
Fig. 24 AXLE SHAFT BEARING REMOVER
1 - AXLE SHAFT TUBE
2 - NUT
3 - GUIDE PLATE
4 - GUIDE
5 - THREADED ROD
6 - ADAPTER
7 - FOOT
Fig. 25 COMPANION FLANGE PULLER
1 - COMPANION FLANGE
2 - PULLER
DRREAR AXLE - 9 1/4 3 - 95
AXLE SHAFT SEALS (Continued)

OVERDRIVE UNIT
REMOVAL
(1) Shift transmission into PARK.
(2) Raise vehicle.
(3) Remove transfer case, if equipped.
(4) Mark propeller shaft universal joint(s) and axle
pinion yoke, or the companion flange and flange
yoke, for alignment reference at installation, if neces-
sary.
(5) Disconnect and remove the rear propeller shaft,
if necessary. (Refer to 3 - DIFFERENTIAL & DRIV-
ELINE/PROPELLER SHAFT/PROPELLER SHAFT -
REMOVAL)
(6) Remove transmission oil pan, remove gasket,
drain oil and reinstall pan.
(7) If overdrive unit had malfunctioned, or if fluid
is contaminated, remove entire transmission. If diag-
nosis indicated overdrive problems only, remove just
the overdrive unit.
(8) Support transmission with transmission jack.
(9) Remove bolts attaching overdrive unit to trans-
mission (Fig. 118).
CAUTION: Support the overdrive unit with a jack
before moving it rearward. This is necessary to pre-
vent damaging the intermediate shaft. Do not allow
the shaft to support the entire weight of the over-
drive unit.
(10) Carefully work overdrive unit off intermediate
shaft. Do not tilt unit during removal. Keep it as
level as possible.(11) If overdrive unit does not require service,
immediately insert Alignment Tool 6227-2 in splines
of planetary gear and overrunning clutch to prevent
splines from rotating out of alignment. If misalign-
ment occurs, overdrive unit will have to be disassem-
bled in order to realign splines.
(12) Remove and retain overdrive piston thrust
bearing. Bearing may remain on piston or in clutch
hub during removal.
(13) Position drain pan on workbench.
(14) Place overdrive unit over drain pan. Tilt unit
to drain residual fluid from case.
(15) Examine fluid for clutch material or metal
fragments. If fluid contains these items, overhaul will
be necessary.
(16) If overdrive unit does not require any service,
leave alignment tool in position. Tool will prevent
accidental misalignment of planetary gear and over-
running clutch splines.
DISASSEMBLY
(1) Remove transmission speed sensor and o-ring
seal from overdrive case (Fig. 119).
(2) Remove overdrive piston thrust bearing (Fig.
120).
Fig. 118 Overdrive Unit Bolts
1 - OVERDRIVE UNIT
2 - ATTACHING BOLTS (7)
Fig. 119 Transmission Speed Sensor
1 - SOCKET AND WRENCH
2 - SPEED SENSOR
3 - O-RING
21 - 218 AUTOMATIC TRANSMISSION - 48REDR