Dodge Dakota (R1). Manual

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

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

MANUAL - NV3500

21 - 77

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 181

OVERRUNNING CLUTCH CAM/OVERDRIVE

PISTON RETAINER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 182
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 182
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

PISTONS

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 185
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

PLANETARY GEARTRAIN/OUTPUT SHAFT

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 186
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 187
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

REAR CLUTCH

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 193
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 194
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

REAR SERVO

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 197
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 197
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

SHIFT MECHANISM

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 198
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

SOLENOID

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 199

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

SPEED SENSOR

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 199
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

THROTTLE VALVE CABLE

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 200
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 200

TORQUE CONVERTER

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 202
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 207

TORQUE CONVERTER DRAINBACK VALVE

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 208
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . 208

TORQUE CONVERTER DRAINBACK VALVE . 208

TRANSMISSION RANGE SENSOR

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 208
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . 210

TRANSMISSION RANGE SENSOR (TRS) . . . . 210

REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 212

TRANSMISSION TEMPERATURE SENSOR

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 213
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

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.

AUTOMATIC TRANSMISSION - 42RE

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Dodge Dakota (R1). Manual - part 608