Dodge Dakota (R1). Manual — part 608
EXTENSION HOUSING SEAL
REMOVAL - YOKE SEAL 2WD
(1) Raise raise and support vehicle.
(2) Mark propeller shaft and axle yoke for align-
ment reference.
(3) Disconnect and remove propeller shaft.
(4) Remove old seal with Remover C-3985-B (Fig.
127) from transmission housing.
REMOVAL - YOKE BUSHING
(1) Raise and support vehicle.
(2) Mark reference lines on the propeller shaft and
remove shaft.
(3) Remove housing yoke seal.
(4) Insert Remover 6957 into rear housing and
tighten tool to bushing and remove bushing (Fig.
128).
INSTALLATION - YOKE SEAL 2WD
(1) Place seal in position on transmission housing.
(2) Drive new seal into transmission housing with
Installer C-3972-A and Handle C-4171 (Fig. 129).
(3) Carefully guide propeller shaft slip yoke into
housing and onto output shaft splines.
(4) Install propeller shaft with reference marks
aligned.
(5) Remove support and lower vehicle.
(6) Check transmission fluid level.
INSTALLATION - YOKE BUSHING
(1) Align bushing oil hole with oil slot in rear
housing.
(2) Tap bushing into place with Installer 6951 and
Handle C-4171.
(3) Install new oil seal in housing using Installer
C-3972-A (Fig. 130).
(4) Install propeller shaft with reference marks
aligned.
(5) Remove support and lower vehicle.
(6) Check transmission fluid level.
Fig. 127 TRANSMISSION YOKE SEAL
1 - REMOVER
2 - SEAL
Fig. 128 Bushing Removal - Typical
1 - REMOVER
2 - EXTENSION HOUSING BUSHING
Fig. 129 Transmission Housing Yoke Seal
1 - HANDLE
2 - INSTALLER
Fig. 130 Rear Housing Seal
1 - HANDLE
2 - INSTALLER
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MANUAL - NV3500
AN
FLUID
DESCRIPTION
The lubricant for the NV3550 is Mopar® Manual
Transmission Lubricant, P/N 4761526. This is the
only lubricant to be used, no other lubricants are
acceptable, or recommended.
The correct transmission lubricant level is to the
bottom edge of the fill plug hole (Fig. 131).
The transmission must be level to obtain an accu-
rate lubricant level check. A drive–on type of hoist is
recommended for this purpose.
The lubricant capacity is approximately 2.28 liters
(4.8 pints). This is the approximate quantity needed
to refill the transmission after a lubricant change or
overhaul.
The fill plug is located in the front housing and the
drain plug is on the bottom of the housing (Fig. 131).
Fig. 131 Drain and Fill Plug Locations
1 - DRAIN PLUG
2 - FILL PLUG
AN
MANUAL - NV3500
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AUTOMATIC TRANSMISSION - 42RE
TABLE OF CONTENTS
page
page
AUTOMATIC TRANSMISSION - 42RE
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . 103
ALUMINUM THREAD REPAIR. . . . . . . . . . . . . 103
ACCUMULATOR
BANDS
ELECTRONIC GOVERNOR
EXTENSION HOUSING BUSHING
EXTENSION HOUSING SEAL
FLUID AND FILTER
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . 144
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . 144
FLUID LEVEL CHECK. . . . . . . . . . . . . . . . . . . 144
FRONT CLUTCH
FRONT SERVO
GEARSHIFT CABLE
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . 153
GEARSHIFT CABLE . . . . . . . . . . . . . . . . . . . . 153
OIL PUMP
OIL PUMP VOLUME CHECK. . . . . . . . . . . . . . 156
OUTPUT SHAFT FRONT BEARING
OUTPUT SHAFT REAR BEARING
OVERDRIVE CLUTCH
OVERDRIVE SWITCH
OVERDRIVE ELECTRICAL CONTROLS . . . . . 162
OVERDRIVE UNIT
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AUTOMATIC TRANSMISSION - 42RE
AN
OVERRUNNING CLUTCH CAM/OVERDRIVE
PISTONS
PLANETARY GEARTRAIN/OUTPUT SHAFT
REAR CLUTCH
REAR SERVO
SHIFT MECHANISM
SOLENOID
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 199
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
SPEED SENSOR
THROTTLE VALVE CABLE
TORQUE CONVERTER
TORQUE CONVERTER DRAINBACK VALVE
TORQUE CONVERTER DRAINBACK VALVE . 208
TRANSMISSION RANGE SENSOR
TRANSMISSION RANGE SENSOR (TRS) . . . . 210
TRANSMISSION TEMPERATURE SENSOR
VALVE BODY
AUTOMATIC TRANSMISSION -
42RE
DESCRIPTION
The 42RE is a four speed fully automatic transmis-
sion (Fig. 1) with an electronic governor. The 42RE is
equipped with a lock-up clutch in the torque con-
verter. First through third gear ranges are provided
by the clutches, bands, overrunning clutch, and plan-
etary gear sets in the transmission. Fourth gear
range is provided by the overdrive unit that contains
an overdrive clutch, direct clutch, planetary gear set,
and overrunning clutch.
The transmission contains a front, rear, and direct
clutch which function as the input driving compo-
nents. It also contains the kickdown (front) and the
low/reverse (rear) bands which, along with the over-
running clutch and overdrive clutch, serve as the
holding components. The driving and holding compo-
nents combine to select the necessary planetary gear
components, in the front, rear, or overdrive planetary
gear set, transfer the engine power from the input
shaft through to the output shaft.
The valve body is mounted to the lower side of the
transmission and contains the valves to control pres-
sure regulation, fluid flow control, and clutch/band
application. The oil pump is mounted at the front of
the transmission and is driven by the torque con-
verter hub. The pump supplies the oil pressure nec-
essary for clutch/band actuation and transmission
lubrication.
AN
AUTOMATIC TRANSMISSION - 42RE
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