Dodge Durango (DN). Manual — part 54
Fig. 126 Upper Housing Shift Valve And Pressure Plug Locations
1 – UPPER HOUSING
2 – 1–2 SHIFT VALVE AND SPRING
3 – 2–3 SHIFT VALVE AND SPRING
4 – 2–3 THROTTLE PLUG
5 – LIMIT VALVE HOUSING
6 – LIMIT VALVE COVER
7 – LIMIT VALVE AND SPRING
8 – RETAINER
9 – 1–2 SHIFT CONTROL VALVE AND SPRING
10 – PRESSURE PLUG COVER
11 – LINE PRESSURE PLUG
12 – PLUG SLEEVE
13 – THROTTLE PRESSURE SPRING AND PLUG
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DISASSEMBLY AND ASSEMBLY (Continued)
VALVE BODY LOWER HOUSING
(1) Remove timing valve cover.
(2) Remove 3-4 timing valve and spring.
(3) Remove 3-4 quick fill valve, spring and plug.
(4) Remove 3-4 shift valve and spring.
(5) Remove converter clutch valve, spring and plug
(Fig. 127).
(6) Remove converter clutch timing valve, retainer
and valve spring.
Fig. 127 Lower Housing Shift Valves And Springs
1 – 3-4 ACCUMULATOR HOUSING
2 – 3-4 SHIFT VALVE AND SPRING
3 – PLUG
4 – SPRING RETAINER
5 – CONVERTER CLUTCH VALVE AND SPRING
6 – CONVERTER CLUTCH TIMING VALVE AND SPRING
7 – OVERDRIVE SEPARATOR PLATE
8 – CASE CONNECTOR
9 – CONVERTER CLUTCH SOLENOID
10 – OVERDRIVE SOLENOID
11 – TIMING VALVE COVER
12 – PLUG
13 – 3-4 TIMING VALVE AND SPRING
14 – LOWER HOUSING
15 – ACCUMULATOR END PLATE
16 – 3-4 ACCUMULATOR PISTON AND SPRING
17 – E-CLIP
18 – 3-4 QUICK FILL SPRING AND VALVE
19 – SOLENOID GASKET
20 – HARNESS
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21 - 83
DISASSEMBLY AND ASSEMBLY (Continued)
3-4 ACCUMULATOR HOUSING
(1) Remove end plate from housing.
(2) Remove piston spring.
(3) Remove piston. Remove and discard piston
seals (Fig. 128).
ASSEMBLY
CAUTION: Do not force valves or plugs into place dur-
ing reassembly. If the valve body bores, valves and
plugs are free of distortion or burrs, the valve body
components should all slide into place easily. In addi-
tion, do not overtighten the transfer plate and valve
body screws during reassembly. Overtightening can
distort the housings resulting in valve sticking, cross
leakage and unsatisfactory operation. Tighten valve
body screws to recommended torque only.
LOWER HOUSING
(1) Lubricate valves, springs, and the housing
valve and plug bores with clean transmission fluid
(Fig. 127).
(2) Install 3-4 timing valve spring and valve in
lower housing.
(3) Install 3-4 quick fill valve in lower housing.
(4) Install 3-4 quick fill valve spring and plug in
housing.
(5) Install timing valve end plate. Tighten end
plate screws to 4 N·m (35 in. lbs.) torque.
3-4 ACCUMULATOR
(1) Lubricate accumulator piston, seals and housing
piston bore with clean transmission fluid (Fig. 128).
(2) Install new seal rings on accumulator piston.
(3) Install piston and spring in housing.
(4) Install end plate on housing.
TRANSFER PLATE
(1) Install rear clutch and rear servo check balls in
transfer plate (Fig. 129).
(2) Install filter screen in upper housing separator
plate (Fig. 130).
(3) Align and position upper housing separator
plate on transfer plate (Fig. 131).
(4) Install brace plate (Fig. 131). Tighten brace
attaching screws to 4 N·m (35 in. lbs.) torque.
(5) Install remaining separator plate attaching
screws. Tighten screws to 4 N·m (35 in. lbs.) torque.
Fig. 128 Accumulator Housing Components
1 – ACCUMULATOR PISTON
2 – 3–4 ACCUMULATOR HOUSING
3 – TEFLON SEALS
4 – PISTON SPRING
5 – COVER PLATE AND SCREWS
Fig. 129 Rear Clutch And Rear Servo Check Ball
Locations
1 – REAR CLUTCH CHECK BALL
2 – REAR SERVO CHECK BALL
3 – TRANSFER PLATE
Fig. 130 Separator Plate Filter Screen Installation
1 – UPPER HOUSING SEPARATOR PLATE
2 – FILTER SCREEN
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DISASSEMBLY AND ASSEMBLY (Continued)
UPPER AND LOWER HOUSING
(1) Position upper housing so internal passages
and check ball seats are facing upward. Then install
check balls in housing (Fig. 132). Eight check balls
are used. The single large check ball is approxi-
mately 8.7 mm (11/32 in.) diameter. The single small
check ball is approximately 4.8 mm (3/16 in.) in
diameter. The remaining 6 check balls are approxi-
mately 6.3 mm (1/4 in.) in diameter.
(2) Position assembled transfer plate and upper
housing separator plate on upper housing (Fig. 133).
Be sure filter screen is seated in proper housing
recess.
(3) Install the ECE check ball into the transfer
plate (Fig. 119). The ECE check ball is approximately
4.8 mm (3/16 in.) in diameter.
(4) Position lower housing separator plate on
transfer plate (Fig. 134).
(5) Install lower housing on assembled transfer
plate and upper housing (Fig. 135).
(6) Install and start all valve body screws by hand
except for the screws to hold the boost valve tube
brace. Save those screws for later installation. Then
tighten screws evenly to 4 N·m (35 in. lbs.) torque.
Start at center and work out to sides when tighten-
ing screws (Fig. 135).
Fig. 132 Check Ball Locations In Upper Housing
1 – SMALL DIAMETER CHECK BALLS (6)
2 – LARGE DIAMETER CHECK BALL (1)
Fig. 131 Brace Plate
1 – BRACE
2 – TRANSFER PLATE
3 – SEPARATOR PLATE
Fig. 133 Installing Transfer Plate On Upper Housing
1 – FILTER SCREEN
2 – TRANSFER PLATE/SEPARATOR PLATE ASSEMBLY
3 – UPPER HOUSING
Fig. 134 Lower Housing Separator Plate
1 – BE SURE TO ALIGN BORES
2 – TRANSFER PLATE
3 – LOWER HOUSING (OVERDRIVE) SEPARATOR PLATE
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21 - 85
DISASSEMBLY AND ASSEMBLY (Continued)
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