2002 DODGE RAM automatic transmission

(9) Mark annulus gear and output shaft for assem-
bly alignment reference (Fig. 145). Use punch or
scriber to mark gear and shaft.
(10) Remove snap-ring that secures annulus gear
on output shaft (Fig. 146). Use two screwdrivers to
unseat and work snap-ring out of groove as shown.
(11) Remove annulus gear from output shaft (Fig.
147). Use rawhide or plastic mallet to tap gear off
shaft.
GEAR CASE AND PARK LOCK
(1) Remove locating ring from gear case.
(2) Remove park pawl shaft retaining bolt and
remove shaft, pawl and spring.
(3) Remove reaction plug snap-ring and remove
reaction plug.
(4) Remove output shaft seal.
CLEANING
Clean the geartrain and case components with sol-
vent. Dry all parts except the bearings with com-
pressed air. Allow bearings to air dry.
Fig. 142 Marking Direct Clutch Drum And Annulus
Gear For Assembly Alignment
1 - DIRECT CLUTCH DRUM
2 - HAMMER
3 - PUNCH
Fig. 143 Clutch Drum Inner Retaining Ring Removal
1 - INNER RETAINING RING
2 - DIRECT CLUTCH DRUM
3 - ANNULUS GEAR
Fig. 144 Clutch Drum Outer Retaining Ring Removal
1 - OUTER RETAINING RING
Fig. 145 Marking Annulus Gear And Output Shaft
For Assembly Alignment
1 - OUTPUT SHAFT
2 - HAMMER
3 - PUNCH
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 179
OVERDRIVE UNIT (Continued)

Do not use shop towels for wiping parts dry unless
the towels are made from a lint-free material. A suf-
ficient quantity of lint (from shop towels, cloths, rags,
etc.) could plug the transmission filter and fluid pas-
sages.
Discard the old case gasket and seals. Do not
attempt to salvage these parts. They are not reus-
able. Replace any of the overdrive unit snap-rings if
distorted or damaged.
Minor nicks or scratches on components can be
smoothed with crocus cloth. However, do not attempt
to reduce severe scoring on any components with
abrasive materials. Replace severely scored compo-
nents; do not try to salvage them.
INSPECTION
Check condition of the park lock components and
the overdrive case.
Check the bushings in the overdrive case. Replace
the bushings if severely scored or worn. Also replace
the case seal if loose, distorted, or damaged.
Examine the overdrive and direct clutch discs and
plates. Replace the discs if the facing is worn,
severely scored, or burned and flaking off. Replace
the clutch plates if worn, heavily scored, or cracked.
Check the lugs on the clutch plates for wear. The
plates should slide freely in the drum. Replace the
plates or drum if binding occurs.
Check condition of the annulus gear, direct clutch
hub, clutch drum and clutch spring. Replace the gear,
hub and drum if worn or damaged. Replace the
spring if collapsed, distorted, or cracked.
Be sure the splines and lugs on the gear, drum and
hub are in good condition. The clutch plates and
discs should slide freely in these components.
Inspect the thrust bearings and spring plate.
Replace the plate if worn or scored. Replace the bear-
ings if rough, noisy, brinnelled, or worn.
Inspect the planetary gear assembly and the sun
gear and bushings. If either the sun gear or the
bushings are damaged, replace the gear and bush-
ings as an assembly. The gear and bushings are not
serviced separately.
The planetary carrier and pinions must be in good
condition. Also be sure the pinion pins are secure and in
good condition. Replace the carrier if worn or damaged.
Inspect the overrunning clutch and race. The race
surface should be smooth and free of scores. Replace
the overrunning clutch assembly or the race if either
assembly is worn or damaged in any way.
Replace the shaft pilot bushing and inner bushing
if damaged. Replace either shaft bearing if rough or
noisy. Replace the bearing snap-rings if distorted or
cracked.
Check the machined surfaces on the output shaft.
These surfaces should clean and smooth. Very minor
nicks or scratches can be smoothed with crocus cloth.
Replace the shaft if worn, scored or damaged in any
way.
Inspect the output shaft bushings. The small bush-
ing is the intermediate shaft pilot bushing. The large
bushing is the overrunning clutch hub bushing.
Replace either bushing if scored, pitted, cracked, or
worn.
ASSEMBLY
GEARTRAIN AND DIRECT CLUTCH
(1) Soak direct clutch and overdrive clutch discs in
MopartATF +4, type 9602, transmission fluid. Allow
discs to soak for 10-20 minutes.
Fig. 146 Annulus Gear Snap-Ring Removal
1 - OUTPUT SHAFT
2 - ANNULUS GEAR
3 - SNAP-RING
Fig. 147 Annulus Gear Removal
1 - OUTPUT SHAFT
2 - ANNULUS GEAR
21 - 180 AUTOMATIC TRANSMISSION - 46REBR/BE
OVERDRIVE UNIT (Continued)

(2) Install new pilot bushing and clutch hub bush-
ing in output shaft if necessary (Fig. 148). Lubricate
bushings with petroleum jelly, or transmission fluid.
(3) Install annulus gear on output shaft, if
removed. Then install annulus gear retaining snap-
ring (Fig. 149).
(4) Align and install clutch drum on annulus gear
(Fig. 150). Be sure drum is engaged in annulus gear
lugs.
(5) Install clutch drum outer retaining ring (Fig.
150).
(6) Slide clutch drum forward and install inner
retaining ring (Fig. 151).(7) Install rear bearing and snap ring on output
shaft (Fig. 152). Be sure locating ring groove in bear-
ing is toward rear.
(8) Install overrunning clutch on hub (Fig. 153).
Note that clutch only fits one way. Shoulder on clutch
should seat in small recess at edge of hub.
(9) Install thrust bearing on overrunning clutch
hub. Use generous amount of petroleum jelly to hold
bearing in place for installation. Bearing fits one way
only. Be sure bearing is seated squarely against hub.
Reinstall bearing if it does not seat squarely.
Fig. 148 Output Shaft Pilot Bushing
1 - OUTPUT SHAFT HUB
2 - OVERRUNNING CLUTCH HUB BUSHING
3 - INTERMEDIATE SHAFT PILOT BUSHING
Fig. 149 Annulus Gear Installation
1 - SNAP-RING
2 - OUTPUT SHAFT FRONT BEARING
3 - ANNULUS GEAR
Fig. 150 Clutch Drum And Outer Retaining Ring
Installation
1 - ANNULUS GEAR
2 - OUTER SNAP-RING
3 - CLUTCH DRUM
Fig. 151 Clutch Drum Inner Retaining Ring
Installation
1 - ANNULUS GEAR
2 - INNER SNAP-RING
3 - CLUTCH DRUM
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 181
OVERDRIVE UNIT (Continued)

(10) Install overrunning clutch in output shaft
(Fig. 154). Insert snap ring pliers in hub splines.
Expand pliers to grip hub. Then install assembly
with counterclockwise, twisting motion.
(11) Install planetary gear in annulus gear (Fig.
155). Be sure planetary pinions are fully seated in
annulus gear before proceeding.
(12) Coat planetary thrust bearing and bearing
contact surface of spring plate with generous amount
of petroleum jelly. This will help hold bearing in
place during installation.
(13) Install planetary thrust bearing on sun gear
(Fig. 156). Slide bearing onto gear and seat it against
spring plate as shown. Bearing fits one way only. If it
does not seat squarely against spring plate, remove
and reposition bearing.
(14) Install assembled sun gear, spring plate and
thrust bearing (Fig. 157). Be sure sun gear and
thrust bearing are fully seated before proceeding.
Fig. 152 Rear Bearing And Snap-Ring Installation
1 - REAR BEARING
2 - SNAP-RING
Fig. 153 Assembling Overrunning Clutch And Hub
1 - CLUTCH HUB
2 - OVERRUNNING CLUTCH
Fig. 154 Overrunning Clutch Installation
1 - CLUTCH DRUM
2 - OVERRUNNING CLUTCH ASSEMBLY
3 - EXPANDING-TYPE SNAP-RING PLIERS
4 - CLUTCH DRUM
5 - ANNULUS GEAR
6 - OVERRUNNING CLUTCH ASSEMBLY SEATED IN OUTPUT
SHAFT
Fig. 155 Planetary Gear Installation
1 - PLANETARY GEAR
2 - ANNULUS GEAR
21 - 182 AUTOMATIC TRANSMISSION - 46REBR/BE
OVERDRIVE UNIT (Continued)

(15) Mount assembled output shaft, annulus gear,
and clutch drum in shop press. Direct clutch spring,
hub and clutch pack are easier to install with assem-
bly mounted in press.
(16) Align splines in hubs of planetary gear and
overrunning clutch with Alignment tool 6227-2 (Fig.
158). Insert tool through sun gear and into splines of
both hubs. Be sure alignment tool is fully seated
before proceeding.
(17) Install direct clutch spring (Fig. 159). Be sure
spring is properly seated on spring plate.
NOTE: The direct clutch in a 46RE transmission
uses 8 clutch discs.
Fig. 156 Planetary Thrust Bearing Installation
1 - SPRING PLATE
2 - PLANETARY THRUST BEARING
3 - SUN GEAR
Fig. 157 Sun Gear Installation
1 - SUN GEAR AND SPRING PLATE ASSEMBLY
Fig. 158 Alignment Tool Installation
1 - SPECIAL TOOL 6227-2
2 - PRESS PLATES
3 - ASSEMBLED DRUM AND ANNULUS GEAR
4 - SUN GEAR
Fig. 159 Direct Clutch Spring Installation
1 - SPECIAL TOOL 6227-2
2 - DIRECT CLUTCH SPRING
3 - CLUTCH HUB
4 - PRESS PLATES
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 183
OVERDRIVE UNIT (Continued)

(18) Assemble and install direct clutch pack on
hub as follows:
(a) Assemble clutch pack components (Fig. 160).
(b) Install direct clutch reaction plate on clutch
hub first. Note that one side of reaction plate is
counterbored. Be sure this side faces rearward.
Splines at rear of hub are raised slightly. Counter-
bore in plate fits over raised splines. Plate should
be flush with this end of hub (Fig. 161).
(c) Install first clutch disc followed by a steel
plate until all discs and plates have been installed.
(d) Install pressure plate. This is last clutch
pack item to be installed. Be sure plate is installed
with shoulder side facing upward (Fig. 162).
(19) Install clutch hub and clutch pack on direct
clutch spring (Fig. 163). Be sure hub is started on
sun gear splines before proceeding.
WARNING: THE NEXT STEP IN GEARTRAIN
ASSEMBLY INVOLVES COMPRESSING THE DIRECT
CLUTCH HUB AND SPRING. IT IS EXTREMELY
IMPORTANT THAT PROPER EQUIPMENT BE USED
TO COMPRESS THE SPRING AS SPRING FORCE IS
APPROXIMATELY 830 POUNDS. USE COMPRES-
SOR TOOL C-6227-1 AND A HYDRAULIC-TYPE
SHOP PRESS WITH A MINIMUM RAM TRAVEL OF 6
INCHES. THE PRESS MUST ALSO HAVE A BED
THAT CAN BE ADJUSTED UP OR DOWN AS
REQUIRED. RELEASE CLUTCH SPRING TENSION
SLOWLY AND COMPLETELY TO AVOID PERSONAL
INJURY.
Fig. 160 46RE Direct Clutch Pack Components
1 - CLUTCH DISCS (8) 3 - CLUTCH PLATES (7)
2 - PRESSURE PLATE 4 - REACTION PLATE
Fig. 161 Correct Position Of Direct Clutch Reaction
Plate
1 - REACTION PLATE COUNTERBORE
2 - DIRECT CLUTCH REACTION PLATE (FLUSH WITH END OF
HUB)
3 - CLUTCH HUB
21 - 184 AUTOMATIC TRANSMISSION - 46REBR/BE
OVERDRIVE UNIT (Continued)

(20) Position Compressor Tool 6227-1 on clutch
hub.
(21) Compress clutch hub and spring just enough
to place tension on hub and hold it in place.(22) Slowly compress clutch hub and spring. Com-
press spring and hub only enough to expose ring
grooves for clutch pack snap ring and clutch hub
retaining ring.
(23) Realign clutch pack on hub and seat clutch
discs and plates in clutch drum.
(24) Install direct clutch pack snap ring (Fig. 164).
Be very sure snap ring is fully seated in clutch drum
ring groove.
(25) Install clutch hub retaining ring (Fig. 165). Be
very sure retaining ring is fully seated in sun gear
ring groove.
(26) Slowly release press ram, remove compressor
tools and remove geartrain assembly.
Fig. 162 Correct Position Of Direct Clutch
1 - DIRECT CLUTCH PRESSURE PLATE
2 - CLUTCH PACK
3 - BE SURE SHOULDER SIDE OF PLATE FACES UPWARD
Fig. 163 Direct Clutch Pack And Clutch Hub
Installation
1 - CLUTCH HUB
2 - DIRECT CLUTCH PACK
3 - CLUTCH DRUM
Fig. 164 Direct Clutch Pack Snap-Ring Installation
1 - SPECIAL TOOL 6227-1
2 - DIRECT CLUTCH PACK SNAP-RING
Fig. 165 Clutch Hub Retaining Ring Installation
1 - SPECIAL TOOL 6227-1
2 - CLUTCH HUB RETAINING RING
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 185
OVERDRIVE UNIT (Continued)

GEAR CASE
(1) Position park pawl and spring in case and
install park pawl shaft. Verify that end of spring
with 90É bend is hooked to pawl and straight end of
spring is seated against case.
(2) Install pawl shaft retaining bolt. Tighten bolt
to 27 N´m (20 ft. lbs.) torque.
(3) Install park lock reaction plug. Note that plug
has locating pin at rear (Fig. 166). Be sure pin is
seated in hole in case before installing snap ring.
(4) Install reaction plug snap-ring (Fig. 167). Com-
press snap ring only enough for installation; do not
distort it.(5) Install new seal in gear case. Use Handle
C-4171 and Installer C-3995-A to seat seal in case.
(6) Verify that tab ends of rear bearing locating
ring extend into access hole in gear case (Fig. 168).
(7) Support geartrain on Tool 6227-1 (Fig. 169). Be
sure tool is securely seated in clutch hub.
(8) Install overdrive gear case on geartrain (Fig.
169).
Fig. 166 Reaction Plug Locating Pin And Snap-Ring
1 - REACTION PLUG SNAP-RING (DO NOT OVERCOMPRESS
TO INSTALL)
2 - LOCATING PIN
3 - PARK LOCK REACTION PLUG
Fig. 167 Reaction Plug And Snap-Ring Installation
1 - REACTION PLUG SNAP-RING
2 - SNAP-RING PLIERS
Fig. 168 Correct Rear Bearing Locating Ring
Position
1 - CASE ACCESS HOLE
2 - TAB ENDS OF LOCATING RING
Fig. 169 Overdrive Gear Case Installation
1 - GEARTRAIN ASSEMBLY
2 - GEAR CASE
21 - 186 AUTOMATIC TRANSMISSION - 46REBR/BE
OVERDRIVE UNIT (Continued)