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5. Remove the screws (7) holding the separator plate (1) onto the oil pump housing (4).
6. Remove the separator plate (1) from the oil pump housing (4).
7. Mark all gears for location. The gears are select fit and if the oil pump isto be reused, the gears must be
returned to their original locations.
8. Remove the oil pump gears (2, 6) from the oil pump housing (4).
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9. Remove the oil pump valve retainers (1) and asso-
ciated valve (2) and spring one at a time. Mark the
combination of components as a group and tag
them as to the location from which they were
removed.
10. Remove the T/C regulator valve (1), T/C limit
valve (2), and regulator valve (3).
CLEANING
Clean pump and support components with solvent and dry them with compressedair.
Page 3467 of 5267

INSPECTION
Check condition of the seal rings and thrust washer on the reaction shaft support. The seal rings do not need to be
replaced unless cracked, broken, or severely worn.
Inspect the pump and support components. Replace the pump or support if theseal ring grooves or machined sur-
faces are worn, scored, pitted, or damaged. Replace the pump gears if pitted, worn chipped, or damaged.
Inspect the pump reaction shaft support bushings. Replace either bushingonly if heavily worn, scored or damaged.
It is not necessary to replace the bushings unless they are actually damaged.
Inspect the valves and plugs for scratches, burrs, nicks, or scores. Minorsurface scratches on steel valves and
plugs can be removed with crocus cloth butdo not round off the edges of the valve or plug lands.Maintaining
sharpness of these edges is vitally important. The edges prevent foreign matter from lodging between the valves
and plugs and the bore.
Inspect all the valve and plug bores in the oil pump cover. Use a penlight to view the bore interiors. Replace the oil
pump if any bores are distorted or scored. Inspect all of the valve springs.The springs must be free of distortion,
warpageorbrokencoils.
Trial fit each valve and plug in its bore to check freedom of operation. Whenclean and dry, the valves and plugs
shoulddropfreelyintothebores.
ASSEMBLY
NOTE: Clean and inspect all components. Make sure that all passages are thoroughly cleaned and are free
from dirt or debris. Make sure that all valves move freely in their proper bore. Make sure that all gear pock-
ets and bushings are free from excessive wear and scoring. Replace the oil pump if any excessive wear or
scoring is found.
1. Install the T/C regulator valve (1), T/C limit valve
(2), and regulator valve (3).
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2. Lubricate the oil pump valves with MoparAT F + 4
and install the valve (2), spring, and retainer (1)
into the appropriate oil pump valve body (3) bore.
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3. Coat the gears (2, 6) with MoparATF +4 and install into their original locations.
4. Place the separator plate (1) onto the oil pump housing (4).
5. Install the screws (7) to hold the separator plate (1) onto the oil pump housing (4). Tighten the screws to 4.5 Nꞏm
(40 in.lbs.).
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6. Position the oil pump valve body (6) onto the locating dowels.
7. Seat the two oil pump halves together and install all bolts finger tight.
8. Torque all bolts down slowly starting in the center and working outward.The correct torque is 4.5 Nꞏm (40
in.lbs.).
9. Verify that the oil pump gears rotate freely and smoothly.
10. Position the reaction shaft support (5) onto the oil pump valve body (6).
11. Install and torque the bolts to hold the reaction shaft support (5) to the oil pump valve body (6). The correct
torque is 12 Nꞏm (105 in.lbs.).
Oil Pump Assembly
1 - PUMP HOUSING 4 - SEAL RING (5)
2 - SEAL 5 - REACTION SHAFT SUPPORT
3 - OIL FILTER SEAL 6 - PUMP VALVE BODY
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SEAL-OIL PUMP FRONT
REMOVAL
1. Remove transmission from the vehicle.
2. Remove the torque converter from the transmission.
3. Usingascrewmountedinaslidehammer,removetheoilpumpfrontseal.
INSTALLATION
1. Clean seal bore of the oil pump of any residue or
particles from the original seal.
2. Install new oil seal in the oil pump housing using
Seal Installer C-3860-A (1).
Page 3472 of 5267

SENSOR-OUTPUT SPEED
DESCRIPTION
The Input and Output Speed Sensors 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 Trans-
mission Control Module (TCM).
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, thoughitscoilisexcitedbyrotationofthe
rear planetary carrier lugs. The TCM interprets this information as outputshaftrpm.
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 transmis-
sion.
3. Remove the wiring connector from the output
speed sensor (1).
4. Remove the bolt holding the output speed sensor
(1) to the transmission case.
5. Remove the output speed sensor (1) from the
transmission case.