2001 DODGE RAM Ac control

VALVE BODY UPPER HOUSING
(1) Note location of check balls in valve body upper
housing (Fig. 297). Then remove the one large diam-
eter and the six smaller diameter check balls.
(2) Remove governor plug and shuttle valve covers
(Fig. 299).
(3) Remove E-clip that secures shuttle valve sec-
ondary spring on valve stem (Fig. 298).(4) Remove throttle plug, primary spring, shuttle
valve, secondary spring, and spring guides (Fig. 299).
(5) Remove boost valve retainer, spring and valve
if not previously removed.
(6) Remove throttle plug and 1-2 and 2-3 governor
plugs (Fig. 286).
(7) Turn upper housing around and remove limit
valve and shift valve covers (Fig. 300).
(8) Remove limit valve housing. Then remove
retainer, spring, limit valve, and 2-3 throttle plug
from limit valve housing (Fig. 300).
(9) Remove 1-2 shift control valve and spring (Fig.
300).
(10) Remove 1-2 shift valve and spring (Fig. 300).
(11) Remove 2-3 shift valve and spring from valve
body (Fig. 300).
(12) Remove pressure plug cover (Fig. 300).
(13) Remove line pressure plug, sleeve, throttle
pressure plug and spring (Fig. 300).
Fig. 297 Check Ball Locations In Upper Housing
1 - SMALL DIAMETER CHECK BALLS (6)
2 - LARGE DIAMETER CHECK BALL (1)
Fig. 298 Shuttle Valve E-Clip And Secondary Spring
1 - E-CLIP
2 - SECONDARY SPRING AND GUIDES
3 - SHUTTLE VALVE
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 633
VALVE BODY (Continued)

Fig. 300 Upper Housing Shift Valve and Pressure Plug Locations
1 - UPPER HOUSING 8 - RETAINER
2 - 1-2 SHIFT VALVE AND SPRING 9 - 1-2 SHIFT CONTROL VALVE AND SPRING
3 - 2-3 SHIFT VALVE AND SPRING 10 - PRESSURE PLUG COVER
4 - 2-3 THROTTLE PLUG 11 - LINE PRESSURE PLUG
5 - LIMIT VALVE HOUSING 12 - PLUG SLEEVE
6 - LIMIT VALVE COVER 13 - THROTTLE PRESSURE SPRING AND PLUG
7 - LIMIT VALVE AND SPRING
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 635
VALVE BODY (Continued)

UPPER HOUSING VALVE AND PLUG
Refer to (Fig. 310), (Fig. 311) and (Fig. 312) to per-
form the following steps.
(1) Lubricate valves, plugs, springs with clean
transmission fluid.
(2) Assemble regulator valve line pressure plug,
sleeve, throttle plug and spring. Insert assembly in
upper housing and install cover plate. Tighten cover
plate screws to 4 N´m (35 in. lbs.) torque.
(3) Install 1-2 and 2-3 shift valves and springs.
(4) Install 1-2 shift control valve and spring.
(5) Install retainer, spring, limit valve, and 2-3
throttle plug from limit valve housing.
(6) Install limit valve housing and cover plate.
Tighten screws to 4 N´m (35 in. lbs.).
(7) Install shuttle valve as follows:
(a) Insert plastic guides in shuttle valve second-
ary spring and install spring on end of valve.
(b) Install shuttle valve into housing.
(c) Hold shuttle valve in place.
Fig. 309 Installing Lower Housing On Transfer Plate
And Upper Housing
1 - VALVE BODY SCREWS (13)
2 - LOWER HOUSING
3 - UPPER HOUSING
4 - TRANSFER PLATE
Fig. 310 Shuttle and Boost Valve Locations
1 - SPRING 8 - SHUTTLE VALVE COVER
2 - RETAINER 9 - SHUTTLE VALVE
3 - BOOST VALVE 10 - SHUTTLE VALVE PRIMARY SPRING
4 - BOOST VALVE PLUG 11 - GOVERNOR PLUG COVER
5 - SPRING GUIDES 12 - THROTTLE PLUG
6 - E-CLIP 13 - UPPER HOUSING
7 - SHUTTLE VALVE SECONDARY SPRING 14 - BOOST VALVE COVER
21 - 640 AUTOMATIC TRANSMISSION - 46REBR/BE
VALVE BODY (Continued)

(d) Compress secondary spring and install E-clip
in groove at end of shuttle valve.
(e) Verify that spring and E-clip are properly
seated before proceeding.
(8) Install shuttle valve cover plate. Tighten cover
plate screws to 4 N´m (35 in. lbs.) torque.(9) Install 1-2 and 2-3 valve governor plugs in
valve body.
(10) Install shuttle valve primary spring and
throttle plug.
(11) Align and install governor plug cover. Tighten
cover screws to 4 N´m (35 in. lbs.) torque.
Fig. 311 Upper Housing Control Valve Locations
1 - UPPER HOUSING 8 - MANUAL VALVE
2 - REGULATOR VALVE 9 - 1-2 GOVERNOR PLUG
3 - SWITCH VALVE 10 - GOVERNOR PLUG COVER
4 - REGULATOR VALVE SPRING 11 - THROTTLE PLUG
5 - KICKDOWN VALVE 12 - 2-3 GOVERNOR PLUG
6 - KICKDOWN DETENT 13 - SHUTTLE VALVE PRIMARY SPRING
7 - THROTTLE VALVE AND SPRING
BR/BEAUTOMATIC TRANSMISSION - 46RE 21 - 641
VALVE BODY (Continued)

Fig. 312 Upper Housing Shift Valve and Pressure Plug Locations
1 - UPPER HOUSING 8 - RETAINER
2 - 1-2 SHIFT VALVE AND SPRING 9 - 1-2 SHIFT CONTROL VALVE AND SPRING
3 - 2-3 SHIFT VALVE AND SPRING 10 - PRESSURE PLUG COVER
4 - 2-3 THROTTLE PLUG 11 - LINE PRESSURE PLUG
5 - LIMIT VALVE HOUSING 12 - PLUG SLEEVE
6 - LIMIT VALVE COVER 13 - THROTTLE PRESSURE SPRING AND PLUG
7 - LIMIT VALVE AND SPRING
21 - 642 AUTOMATIC TRANSMISSION - 46REBR/BE
VALVE BODY (Continued)

CAUTION: It is possible for the park rod to displace
into a cavity just above the pawl sprag during
installation. Make sure the rod is actually engaged
in the pawl and has not displaced into this cavity.
(8) Install accumulator springs and piston into
case. Then swing valve body over piston and outer
spring to hold it in place.
(9) Align accumulator piston and outer spring,
manual lever shaft and electrical connector in case.
(10) Then seat valve body in case and install one
or two bolts to hold valve body in place.
(11) Tighten valve body bolts alternately and
evenly to 11 N´m (100 in. lbs.) torque.
(12) Install new fluid filter on valve body. Tighten
filter screws to 4 N´m (35 in. lbs.) torque.
(13) Install throttle and gearshift levers on valve
body manual lever shaft.
(14) Check and adjust front and rear bands if nec-
essary.
(15) Connect solenoid case connector wires.
(16) Install oil pan and new gasket. Tighten pan
bolts to 17 N´m (13 ft. lbs.) torque.
(17) Lower vehicle and fill transmission with
MopartATF +4, type 9602, fluid.
(18) Check and adjust gearshift and throttle valve
cables, if necessary.
ADJUSTMENTS - VALVE BODY
CONTROL PRESSURE ADJUSTMENTS
There are two control pressure adjustments on the
valve body;
²Line Pressure
²Throttle PressureLine and throttle pressures are interdependent
because each affects shift quality and timing. As a
result, both adjustments must be performed properly
and in the correct sequence. Adjust line pressure first
and throttle pressure last.
LINE PRESSURE ADJUSTMENT
Measure distance from the valve body to the inner
edge of the adjusting screw with an accurate steel
scale (Fig. 325).
Distance should be 33.4 mm (1-5/16 in.).
If adjustment is required, turn the adjusting screw
in, or out, to obtain required distance setting.
NOTE: The 33.4 mm (1-5/16 in.) setting is an
approximate setting. Manufacturing tolerances may
make it necessary to vary from this dimension to
obtain desired pressure.
Fig. 322 Valve Body Harness Connector O-Ring Seal
1 - CONNECTOR O-RINGS
2 - VALVE BODY HARNESS CONNECTOR
3 - HARNESS
Fig. 323 Manual Lever Shaft Seal
1 - 15/16©© SOCKET
2 - SEAL
Fig. 324 Accumulator Piston Components
1 - INNER SPRING
2 - ACCUMULATOR PISTON
3 - OUTER SPRING
4 - SEAL RINGS
21 - 646 AUTOMATIC TRANSMISSION - 46REBR/BE
VALVE BODY (Continued)

AUTOMATIC TRANSMISSION - 47RE
TABLE OF CONTENTS
page page
AUTOMATIC TRANSMISSION - 47RE
DESCRIPTION..........................649
OPERATION............................651
DIAGNOSIS AND TESTING................657
AUTOMATIC TRANSMISSION.............657
PRELIMINARY........................657
ROAD TESTING.......................657
HYDRAULIC PRESSURE TEST...........658
AIR TESTING TRANSMISSION CLUTCH
AND BAND OPERATION.................661
CONVERTER HOUSING FLUID LEAK......662
DIAGNOSIS CHARTS...................663
STANDARD PROCEDURE.................673
ALUMINUM THREAD REPAIR.............673
REMOVAL.............................673
DISASSEMBLY..........................674
CLEANING.............................680
INSPECTION...........................681
ASSEMBLY............................681
INSTALLATION..........................688
SCHEMATICS AND DIAGRAMS.............690
SPECIFICATIONS........................702
SPECIAL TOOLS........................704
ACCUMULATOR
DESCRIPTION..........................707
OPERATION............................708
INSPECTION...........................708
BANDS
DESCRIPTION..........................709
OPERATION............................709
ADJUSTMENTS.........................709
ELECTRONIC GOVERNOR
DESCRIPTION..........................710
OPERATION............................711
REMOVAL.............................712
INSTALLATION..........................713
EXTENSION HOUSING BUSHING
REMOVAL.............................714
INSTALLATION..........................714
EXTENSION HOUSING SEAL
REMOVAL.............................714
INSTALLATION..........................715
FLUID AND FILTER
DIAGNOSIS AND TESTING................715
EFFECTS OF INCORRECT FLUID LEVEL . . . 715
CAUSES OF BURNT FLUID..............715
FLUID CONTAMINATION................715
STANDARD PROCEDURE.................715
FLUID LEVEL CHECK...................715FLUID AND FILTER REPLACEMENT.......717
TRANSMISSION FILL...................718
FRONT CLUTCH
DESCRIPTION..........................718
OPERATION............................718
DISASSEMBLY..........................719
INSPECTION...........................721
ASSEMBLY............................721
FRONT SERVO
DESCRIPTION..........................722
OPERATION............................723
DISASSEMBLY..........................723
CLEANING.............................723
INSPECTION...........................723
ASSEMBLY............................723
OIL PUMP
DESCRIPTION..........................724
OPERATION............................724
STANDARD PROCEDURE.................724
OIL PUMP VOLUME CHECK..............724
DISASSEMBLY..........................726
CLEANING.............................728
INSPECTION...........................728
ASSEMBLY............................729
OUTPUT SHAFT FRONT BEARING
REMOVAL.............................730
INSTALLATION..........................730
OUTPUT SHAFT REAR BEARING
REMOVAL.............................731
INSTALLATION..........................731
OVERDRIVE CLUTCH
DESCRIPTION..........................731
OPERATION............................731
OVERDRIVE SWITCH
DESCRIPTION..........................732
OPERATION............................732
DIAGNOSIS AND TESTING................732
OVERDRIVE ELECTRICAL CONTROLS.....732
REMOVAL.............................733
INSTALLATION..........................733
OVERDRIVE UNIT
REMOVAL.............................733
DISASSEMBLY..........................734
CLEANING.............................741
INSPECTION...........................741
ASSEMBLY............................742
INSTALLATION..........................750
21 - 648 AUTOMATIC TRANSMISSION - 47REBR/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..........................768OPERATION............................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
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 thelow/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/BEAUTOMATIC TRANSMISSION - 47RE 21 - 649