Dodge Neon / Neon SRT-4. Manual — part 339
forward. The piston should return to its starting
position when the air pressure is removed.
REVERSE CLUTCH
Apply air pressure to the reverse clutch apply pas-
sage and watch for the push/pull piston to move rear-
ward. The piston should return to its starting
position when the air pressure is removed.
2/4 CLUTCH
Apply air pressure to the feed hole located on the
2/4 clutch retainer. Look in the area where the 2/4
piston contacts the first separator plate and watch
carefully for the 2/4 piston to move rearward. The
piston should return to its original position after the
air pressure is removed.
LOW/REVERSE CLUTCH
Apply air pressure to the low/reverse clutch feed
hole (rear of case, between 2 bolt holes). Then, look
in the area where the low/reverse piston contacts the
first separator plate. Watch carefully for the piston to
move forward. The piston should return to its origi-
nal position after the air pressure is removed.
UNDERDRIVE CLUTCH
Because this clutch piston cannot be seen, its oper-
ation is checked by function. Air pressure is applied
to the low/reverse and the 2/4 clutches. This locks the
output shaft. Use a piece of rubber hose wrapped
around the input shaft and a pair of clamp-on pliers
to turn the input shaft. Next apply air pressure to
the underdrive clutch. The input shaft should not
rotate with hand torque. Release the air pressure
and confirm that the input shaft will rotate.
DIAGNOSIS AND TESTING - TORQUE
CONVERTER HOUSING FLUID LEAKAGE
When diagnosing converter housing fluid leaks,
three actions must be taken before repair:
(1) Verify proper transmission fluid level.
(2) Verify that the leak originates from the con-
verter housing area and is transmission fluid.
(3) Determine the true source of the leak.
Fluid leakage at or around the torque converter
area may originate from an engine oil leak (Fig. 7).
The area should be examined closely. Factory fill
fluid is red and, therefore, can be distinguished from
engine oil.
Fig. 5 Air Pressure Test Plate
1 - TOOL 6056
2 - ACCUMULATORS
Fig. 6 Testing Reverse Clutch
1 - TOOL 6056
2 - AIR NOZZLE
Fig. 7 Converter Housing Leak Paths
1 - PUMP SEAL
2 - PUMP VENT
3 - PUMP BOLT
4 - PUMP GASKET
5 - CONVERTER HOUSING
6 - CONVERTER
7 - REAR MAIN SEAL LEAK
21 - 140
40TE AUTOMATIC TRANSAXLE
PL/SRT-4
40TE AUTOMATIC TRANSAXLE (Continued)
Some suspected converter housing fluid leaks may
not be leaks at all. They may only be the result of
residual fluid in the converter housing, or excess
fluid spilled during factory fill, or fill after repair.
Converter
housing
leaks
have
several
potential
sources. Through careful observation, a leak source
can be identified before removing the transmission
for repair.
Pump seal leaks tend to move along the drive hub
and onto the rear of the converter (Fig. 7). Pump
o-ring or pump body leaks follow the same path as a
seal leak. Pump attaching bolt leaks are generally
deposited on the inside of the converter housing and
not on the converter itself. Pump seal or gasket leaks
usually travel down the inside of the converter hous-
ing (Fig. 7).
TORQUE CONVERTER LEAKAGE
Possible sources of torque converter leakage are:
• Torque converter weld leaks at the outside diam-
eter weld (Fig. 8).
• Torque converter hub weld (Fig. 8).
REMOVAL
(1) Disconnect battery cables.
(2) Remove hold down and battery.
(3) Remove battery tray.
(4) Remove air cleaner/throttle body assembly.
(5) Using Tool 8875A, disconnect oil cooler lines at
transaxle. (Refer to 7 - COOLING/TRANSMISSION -
STANDARD PROCEDURE)
(6) Disconnect input speed sensor connector.
(7) Disconnect output speed sensor connector.
(8) Disconnect solenoid/pressure switch assembly
connector.
(9) Disconnect gearshift cable from manual valve.
(10) Disconnect gearshift cable from upper mount
bracket. Secure cable out of the way.
(11) Remove starter motor upper mounting bolt.
(12) Raise vehicle on hoist.
(13) Remove halfshafts.
(14) Remove structural collar.
(15) Remove left lateral bending brace.
(16) Remove starter motor and position out of way.
(17) Remove power steering cooler-to-crossmember
fasteners. Secure cooler out of way.
(18) Remove right lateral bending brace-to-trans-
axle bolt.
(19) Remove converter dust shield.
(20) Remove torque converter-to-drive plate bolts.
(21) Remove both lower transaxle bellhousing-to-
engine bolts.
(22) Support engine with a screw jack and wood
block.
(23) Remove transaxle upper mount through-bolt.
Lower engine/transaxle assembly with screw jack.
(24) Obtain helper and transmission jack.
(25) Position
transmission
jack
to
transaxle.
Secure transaxle to jack.
(26) Remove two (2) transaxle bellhousing-to-block
bolts (upper).
(27) Remove transaxle from vehicle.
DISASSEMBLY
NOTE: If transaxle is being overhauled (clutch
and/or seal replacement) or replaced, it is neces-
sary to perform the PCM/TCM Quick Learn Proce-
dure.
(Refer
to
8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/POWERTRAIN/TRANSMIS-
SION CONTROL MODULE - STANDARD PROCE-
DURE)
NOTE: This procedure does not include final drive
(differential) disassembly.
(1) Remove input and output speed sensors.
(2) Remove
three
(3)
solenoid/pressure
switch
assembly-to-case bolts.
(3) Remove solenoid/pressure switch assembly and
gasket (Fig. 9).
Fig. 8 Converter Leak Points - Typical
1 - OUTSIDE DIAMETER WELD
2 - TORQUE CONVERTER HUB WELD
3 - STARTER RING GEAR
4 - LUG
PL/SRT-4
40TE AUTOMATIC TRANSAXLE
21 - 141
40TE AUTOMATIC TRANSAXLE (Continued)
(4) Remove oil pan-to-case bolts (Fig. 10).
(5) Remove oil pan (Fig. 11).
(6) Remove oil filter (Fig. 12).
(7) Turn manual valve fully clock-wise to get park
rod into position for removal.
(8) Remove valve body-to-case bolts (Fig. 13).
Fig. 9 Solenoid/Pressure Switch Assembly and
Gasket
1 - SOLENOID/PRESSURE SWITCH ASSEMBLY
2 - GASKET
Fig. 10 Remove Oil Pan Bolts
1 - OIL PAN BOLTS (USE RTV UNDER BOLT HEADS)
Fig. 11 Remove Oil Pan
1 - OIL PAN
2 - 1/8 INCH BEAD OF MOPAR
T
ATF RTV (MS-GF41)
3 - OIL FILTER
Fig. 12 Remove Filter and O-Ring
1 - OIL FILTER
2 - O-RING
21 - 142
40TE AUTOMATIC TRANSAXLE
PL/SRT-4
40TE AUTOMATIC TRANSAXLE (Continued)
CAUTION: Do not handle the valve body assembly
from the manual valve. Damage can result.
(9) Using a screwdriver, push park rod rollers
away from guide bracket (Fig. 14) and remove valve
body assembly (Fig. 15).
NOTE: Depending on engine application, some
accumulators will have two springs and others will
have one spring. The springs are color-coded
according to application and year. When disassem-
bling, mark accumulator spring location to ease
assembly.
(10) Remove underdrive and overdrive accumula-
tors (Fig. 16).
(11) Remove low/reverse accumulator snap ring
(Fig. 17).
Fig. 13 Remove Valve Body-to-Case Bolts
1 - VALVE BODY ATTACHING BOLTS (18)
2 - VALVE BODY
Fig. 14 Push Park Rod Rollers from Guide Bracket
1 - PARK SPRAG ROLLERS
2 - SCREWDRIVER
3 - PARK SPRAG GUIDE BRACKET
Fig. 15 Valve Body Removal/Installation
1 - VALVE BODY
Fig. 16 Underdrive and Overdrive Accumulators
1 - OVERDRIVE PISTON AND SPRING
2 - UNDERDRIVE PISTON AND SPRING
PL/SRT-4
40TE AUTOMATIC TRANSAXLE
21 - 143
40TE AUTOMATIC TRANSAXLE (Continued)
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