Dodge 2001 Ram 1500 Owner's Manual page 2113

21 - 478 AUTOMATIC TRANSMISSION - 46RE
OVERRUNNING CLUTCH CAM/OVERDRIVE
PISTON RETAINER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 580
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 580
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 580
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 580
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 580
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 581
PARK/NEUTRAL POSITION SWITCH
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . 583
PARK/NEUTRAL POSITION SWITCH . . . . . . . 583
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 583
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 583
PISTONS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 584
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 584
PLANETARY GEARTRAIN/OUTPUT SHAFT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 585
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 585
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 586
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 587
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 588
REAR CLUTCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 591
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 592
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 592
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 593
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 593
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 593
REAR SERVO
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 594
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 594
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 594
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 595
SHIFT MECHANISM
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 595
AUTOMATIC TRANSMISSION -
46RE
DESCRIPTION
The 46RE (Fig. 1) is a four speed fully automatic
transmissions with an electronic governor. The 46RE
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
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 595
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 596
SOLENOID
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 596
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 597
SPEED SENSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 597
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 597
THROTTLE VALVE CABLE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 597
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 598
TORQUE CONVERTER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 600
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 605
TORQUE CONVERTER DRAINBACK VALVE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 605
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . 606
TORQUE CONVERTER DRAINBACK VALVE . 606
TRANSMISSION TEMPERATURE SENSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 606
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 606
VALVE BODY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 607
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 626
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 637
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 637
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 638
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 645
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 646
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.
BR/BE