2002 DODGE RAM Service Repair Manual

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Page 1801 of 2255

DODGE RAM 2002 Service Repair Manual OVERDRIVE GEARTRAIN
(1) Remove overdrive clutch wave spring (Fig.
126).(2) Remove overdrive clutch reaction snap-ring
(Fig. 127). Note that snap-ring is located in same
groove as wave spring.
(3) Remo

Page 1802 of 2255

DODGE RAM 2002 Service Repair Manual (6) Lift gear case up and off geartrain assembly
(Fig. 131).
(7) Remove snap-ring that retains rear bearing on
output shaft.
(8) Remove rear bearing from output shaft (Fig.
132).
DIRECT CLUTCH, HUB AN

Page 1803 of 2255

DODGE RAM 2002 Service Repair Manual (4) Remove direct clutch pack snap-ring (Fig. 134).
(5) Remove direct clutch hub retaining ring (Fig.
135).
(6) Release press load slowly and completely (Fig.
136).
(7) Remove Special Tool 6227-1. The

Page 1804 of 2255

DODGE RAM 2002 Service Repair Manual GEARTRAIN
(1) Remove direct clutch hub and spring (Fig. 137).
(2) Remove sun gear and spring plate. Then
remove planetary thrust bearing and planetary gear
(Fig. 138).(3) Remove overrunning clutch ass

Page 1805 of 2255

DODGE RAM 2002 Service Repair Manual (7) Remove direct clutch drum rear retaining ring
(Fig. 141).
(8) Remove direct clutch drum outer retaining ring
(Fig. 142).
(9) Mark annulus gear and output shaft for assem-
bly alignment reference (

Page 1806 of 2255

DODGE RAM 2002 Service Repair Manual (10) Remove snap-ring that secures annulus gear
on output shaft (Fig. 144). Use two screwdrivers to
unseat and work snap-ring out of groove as shown.
(11) Remove annulus gear from output shaft (Fig.
1

(10) Remove snap-ring that secures annulus gear
on output shaft (Fig. 144). Use two screwdrivers to
unseat and work snap-ring out of groove as shown.
(11) Remove annulus gear from output shaft (Fig.
145). 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.
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 dam-
aged.
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.
Fig. 144 Annulus Gear Snap-Ring Removal
1 - OUTPUT SHAFT
2 - ANNULUS GEAR
3 - SNAP-RING
Fig. 145 Annulus Gear Removal
1 - OUTPUT SHAFT
2 - ANNULUS GEAR
BR/BEAUTOMATIC TRANSMISSION - 47RE 21 - 353
OVERDRIVE UNIT (Continued)

Page 1807 of 2255

DODGE RAM 2002 Service Repair Manual 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

Page 1808 of 2255

DODGE RAM 2002 Service Repair Manual (6) Slide clutch drum forward and install inner
retaining ring (Fig. 149).
(7) Install rear bearing and snap-ring on output
shaft (Fig. 150). Be sure locating ring groove in bear-
ing is toward rear.

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