Dodge 2001 Ram 1500 Owner's Manual page 2284

BR/BE
OVERRUNNING CLUTCH CAM/OVERDRIVE
PISTON RETAINER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 751
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 751
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 751
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 752
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752
PARK/NEUTRAL POSITION SWITCH
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . 755
PARK/NEUTRAL POSITION SWITCH . . . . . . . 755
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 755
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 755
PISTONS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 755
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 755
PLANETARY GEARTRAIN/OUTPUT SHAFT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 757
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 757
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 757
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 760
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 760
REAR CLUTCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 764
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 764
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 765
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 765
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 765
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 766
REAR SERVO
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 767
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 767
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 768
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 768
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 768
SHIFT MECHANISM
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 768
AUTOMATIC TRANSMISSION -
47RE
DESCRIPTION
The 47RE (Fig. 1) is a four speed fully automatic
transmissions with an electronic governor. The 47RE
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
AUTOMATIC TRANSMISSION - 47RE
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 768
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 769
SOLENOID
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 769
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 770
SPEED SENSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 770
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 770
THROTTLE VALVE CABLE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 770
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 771
TORQUE CONVERTER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 773
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 777
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 778
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 778
TORQUE CONVERTER DRAINBACK VALVE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 778
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 778
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . 778
TORQUE CONVERTER DRAINBACK VALVE . 778
TRANSMISSION TEMPERATURE SENSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 779
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 779
VALVE BODY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 780
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 783
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 798
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . 799
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 808
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 809
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 810
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 818
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 818
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.
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