Automatic - 32Rh; Description - Jeep Wrangler 2001 Service Manual

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AUTOMATIC - 32RH

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . 89
PRELIMINARY . . . . . . . . . . . . . . . . . . . . . . . . . 89
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . 89
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . 105
ACCUMULATOR
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
BANDS
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 107
FLUID AND FILTER
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . 108
FLUID CONTAMINATION . . . . . . . . . . . . . . . . 108
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . 109
FLUID LEVEL CHECK. . . . . . . . . . . . . . . . . . . 109
TRANSMISSION FILL . . . . . . . . . . . . . . . . . . . 109
FLUID AND FILTER REPLACEMENT. . . . . . . . 110
FRONT CLUTCH
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
AUTOMATIC - 32RH
DESCRIPTION
This Service Manual Supplement includes
ONLY the information that is new or updated
for 2001 Model Year. All other Service Manual
information is in the 2000 Model Year Service
Manual.
When you are using this information you may
be referred to another section of the Service
Manual. The refer to is written differently than
in prior years.
OPERATION
The application of each driving or holding compo-
nent is controlled by the valve body based upon the
manual lever position,throttle pressure, and governor
pressure. The governor pressure is a variable pres-
sure input to the valve body and is one of the signals
that a shift is necessary. First through third gear are
2001 JEEP WRANGLER
AUTOMATIC - 32RH
TABLE OF CONTENTS
page
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 111
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
GEAR SHIFT CABLE
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 113
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 114
GOVERNOR AND PARK GEAR
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 114
ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
PARK/NEUTRAL POSITION SWITCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 116
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
REAR SERVO
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 116
ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
SHIFT MECHANISM
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 117
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
THROTTLE VALVE CABLE
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 117
obtained by selectively applying and releasing the
different clutches and bands. Engine power is
thereby routed to the various planetary gear assem-
blies which combine with the overrunning clutch
assembly to generate the different gear ratios. The
torque converter clutch is hydraulically applied and
is released when fluid is vented from the hydraulic
circuit by the torque converter control (TCC) solenoid
on the valve body. The torque converter clutch is con-
trolled by the Powertrain Control Module (PCM). The
torque converter clutch engages in third gear when
the vehicle is cruising on a level plane after the vehi-
cle has warmed up. The torque converter clutch will
disengage momentarily when an increase in engine
load is sensed by the PCM, such as when the vehicle
begins to go uphill or the throttle pressure is
increased. The torque converter clutch feature
increases fuel economy and reduces the transmission
fluid temperature.
AUTOMATIC - 32RH 21s - 83
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