Assembly; Output Speed Sensor Description; Operation; Removal - Chrysler Vehicle User Manual

TJ
OIL PUMP (Continued)
(7) Measure clearance between inner gear and
crescent. Clearance should be 0.093-0.385 mm
(0.0036-0.0151 in.).
(8) Position an appropriate piece of Plastigage
across both pump gears.
(9) Align the Plastigage to a flat area on the reac-
tion shaft support housing.
(10) Install the reaction shaft to the pump hous-
ing. Tighten the bolts to 27 N·m (20 ft. lbs.).
(11) Remove bolts and carefully separate the hous-
ings. Measure the Plastigage following the instruc-
tions supplied.
(12) Clearance between outer gear side and the
reaction shaft support should be 0.020-0.046 mm
(0.0008-0.0018 in.). Clearance between inner gear
side and the reaction shaft support should be 0.020-
0.046 mm (0.0008-0.0018 in.).

ASSEMBLY

(1) Assemble oil pump as shown in (Fig. 229)
(2) Install and torque reaction shaft support-to-oil
pump housing bolts to 28 N·m (20 ft. lbs.) torque.
Fig. 229 Oil Pump Assembly
1 - PUMP HOUSING
2 - OUTER PUMP GEAR
3 - INNER PUMP GEAR
4 - REACTION SHAFT SUPPORT
5 - SEAL RINGS (4)
6 - REACTION SHAFT
7 - CRESCENT
AUTOMATIC TRANSMISSION - 42RLE
OUTPUT SPEED SENSOR
DESCRIPTION
The Input and Output Speed Sensors (Fig. 230) are
two-wire magnetic pickup devices that generate AC
signals as rotation occurs. They are mounted in the
left side of the transmission case and are considered
primary inputs to the Transmission Control Module
(TCM).
Fig. 230 Input and Output Speed Sensors and
Transmission Range Sensor
1 - INPUT SPEED SENSOR
2 - OUTPUT SPEED SENSOR
3 - TRANSMISSION RANGE SENSOR

OPERATION

The Input Speed Sensor provides information on
how fast the input shaft is rotating. As the teeth of
the input clutch hub pass by the sensor coil, an AC
voltage is generated and sent to the TCM. The TCM
interprets this information as input shaft rpm.
The Output Speed Sensor generates an AC signal
in a similar fashion, though its coil is excited by rota-
tion of the rear planetary carrier lugs. The TCM
interprets this information as output shaft rpm.
The TCM compares the input and output speed
signals to determine the following:
• Transmission gear ratio
• Speed ratio error detection
• CVI calculation
The TCM also compares the input speed signal and
the engine speed signal to determine the following:
• Torque converter clutch slippage
• Torque converter element speed ratio

REMOVAL

(1) Raise vehicle.
(2) Place a suitable fluid catch pan under the
transmission.
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