1998 SSANGYONG MUSSO automatic transmission

AUTOMATIC TRANSMISSION 5A-87
Transmission Case
To teardown the transmission case, proceed as follows:
1. Remove the pin from the cross shaft inhibitor switch side
(4WD models) using tool No.0555-332942.
2. Remove the inhibitor switch from the case.
Remove the cross shaft seals with special tool No.0555-
331893.
3. Remove the circlip from the cross-shaft. Pull the shaft to
release the drive pin from the selector quadrant.
4. Using tool No. 0555-331897, press the pin from the cross-
shaft and withdraw the shaft from the case. Retrieve the
spring and pin
5. Remove the manual valve lever and the park rod.
6. Remove the 10 pin plug from the wiring loom bracket
adjacent to the inhibitor switch(RWD models),
7. Depress the tangs and withdraw the 10 pin connector from
the case. Remove the loom assembly.

5A-88 AUTOMATIC TRANSMISSION
8. Detach the No.7 solenoid wire from the front of the case.
9. Remove the parking pawl pivot pin and the pawl and spring
from the case.
10. Remove the shaft and the rear servo lever.
11. Remove the rear servo cover and piston assembly.
12. Remove the B1R circlip, valve and spring.
13. Remove both band adjustment shims.
14. Inspect the output shaft bushing in the case and replace if
necessary.
15. Inspect cooler line fittings and replace as necessary.
16. Inspect the case for damage.
17. To remove the park rod lever: Remove the circlip from the
inner end of the pivot shaft and tap the outer end of the
shaft until it moves free from the case, then using a wide
shallow tapered drift as a wedge, drive the pin out from
the inside of the case and remove the lever and spring.
Notice
Do not remove the park rod lever unless absolutely
necessary.

AUTOMATIC TRANSMISSION 5A-89
Forward Clutch Cylinder
To remove the forward clutch cylinder, refer to figure 8.4,
proceed as follows.
1. Place the assembly in a horizontal position.
2. Remove the thrust bearing and adjustment shims from the
input shaft.
3. Remove the circlip from the front of the clutch cylinder and
remove the input shaft.
4. Remove the overdrive shaft and the C1 clutch hub assembly
from the clutch cylinder.
5. Remove the C1 clutch plates from the cylinder.
6. Remove the circlip retaining the C3 clutch hub in the rear of
the clutch cylinder and remove the hub.
7. Remove the C2/C4 clutch hub assembly and remove the
thrust bearing from the C4 hub.
8. Remove the C2 clutch plates.
9. Invert the clutch cylinder and remove the C4 clutch sleeve,
clutch plates and the two wave washers. The 3-4 one way
clutch is located between the C2 and C4 clutch hubs, and
the hubs may be separated by rotating one hub clockwise
and withdrawing it from the other.
Figure 8.4 - Forward Clutch Cylinder Assembly

5A-90 AUTOMATIC TRANSMISSION
10. Remove the thrust block from the C4 clutch cylinder hub.
Notice
Make sure that the spring keeper is not caught in the circlip
groove, and that all the spring pressure is released, before
removing the tool.
11. Mount the clutch cylinder on tool No.0555-331899 with
the C2/C4 end uppermost and compress the piston return
spring. Remove the spring retaining circlip. Release the
tool and remove the circlip, keeper and spring.
12. Invert the clutch cylinder on the compressor tool and
remove the C1 clutch piston return spring in a similar
manner.
13. To remove the clutch pistons from the clutch cylinder, apply
air pressure to the apply ports in the bore of the cylinder.

AUTOMATIC TRANSMISSION 5A-91
C3 Clutch Cylinder
To remove the C3 clutch cylinder, proceed as follows:
1. Remove the forward sun gear and thrust bearing from the
C3 clutch cylinder.
2. Remove the nylon thrust bearing, bearing support, needle
thrust bearing and thrust block from the clutch cylinder hub.
3. Mount the clutch assembly on tool No.0555-331899 and
compress the piston return spring.
Remove the circlip and release the spring.
Notice
Make sure that the spring keeper has not been caught in
the circlip groove, and that all spring pressure has been
released, before removing the tool.
4. Remove the tool, circlip, keeper and spring.
5. Remove the sealing rings from the C3 clutch cylinder.
6. Remove the clutch plate retaining circlip and remove the
clutch plates.
7. To remove the clutch piston from the clutch cylinder, apply
air pressure to the port between the iron sealing rings on
the bearing journals of the cylinder.
8. Remove the reverse sun gear from the cylinder.

5A-92 AUTOMATIC TRANSMISSION
Planet Carrier and Centre Support
To remove the planet carrier and centre support, proceed as
follows.
1. Separate the planet carrier and centre support from the
output shaft. Remove the thrust bearings from the output
shaft and the planet carrier.
2. Separate the centre support from the planet carrier by
rotating it anti-clockwise.
3. Lift the one way clutch from the planet carrier.
4. Remove the circlip retaining the one way clutch outer race
in the planet carrier and remove the race.
5. Remove the one way clutch retainer from the planet carrier.
Pump
Note that the following valves are housed in the pump cover:
lSolenoid 7
lC1 bias valve
lConverter clutch control valve
lConverter clutch regulator valve
lPrimary regulator valve
To remove the pump, proceed as follows.
1. Remove the wiring loom retainer plate and remove
solenoid 7 with a T30 Torx bit.
2. Remove the five washer head bolts from the cover plate
using a multi-point 8 mm socket.
3. Remove the five Torx head screws from the cover plate
(Torx bit No. 30). Note that the odd screw holds the pump
body to the pump body cover.
Notice
Do not strike the converter support tube to loosen the
pump body.
4. Separate the pump body from the pump cover.
5. Lift the cover plate from the cover.
6. Remove the two ball check valves and one spring from
the pump cover.
Notice
Some of the valves and plugs are preloaded by springs
and may unexpectedly fall out of the cover when the pins
are removed.
7. Depress the plug inward and remove the retaining pin for
each of the four valves.
8. Remove the four valves, plugs and springs.
9. Remove the pump gears from the pump body.
10. Remove the lip seal from the front of the pump body.

AUTOMATIC TRANSMISSION 5A-93
Valve Body
To disassemble the valve body, proceed as follows.
1. Remove the detent spring and retainer plate using a T40 Torx bit.
Notice
Be aware that the manual valve will fall out of the valve body.
2. Take note of the angular relationship of the solenoid terminals
to the valve body, then slide the manual valve out of the lower
valve body.
3. Remove the solenoid and valve assembly as follows:
lsolenoid 1
lsolenoid 2
lsolenoid 3
lsolenoid 4
lsolenoid 5
lsolenoid 6
4. Place the valve body assembly on the bench with the upper
body uppermost.
5. Remove the 24 clamping screws with a No. 30 Ton bit. Separate
the upper and lower valve bodies by lifting the upper body and
the separator plate together.
6. Upper body over and place it on the bench with the separator
plate uppermost.
7. Lift the separator plate and gaskets from the upper valve body.
8. Remove the five nylon check balls exposed in the valve body.
9. Remove the retainer plate, plug, spring and reverse lockout
valve.
10. Remove the two filters (and the large nylon check ball) from the
lower valve body.
Notice
Once the pins are removed, the plates are loose in the valve
body and will drop out when the valve body is turned over.
11. Remove the keeper plates and pins from the 1-2,2-3,3-4, BAR
and CAR valves. The pins can be removed with a magnet.
12. Remove the 1-2,2-3 and 3-4 shift valves.
Notice
The plug is preloaded by the spring and may unexpectedly fall
out of the valve body.
13. Depress the 4-3 sequence valve plug and remove the keeper
plate.
14. Remove the plug, valve and spring.
15. Depress the solenoid 5 valve. Remove the keeper pin and
remove the valve and spring.
Notice
The valve is preloaded by the spring and may unexpectedly fall
out of the valve body.
16. Depress the line pressure release valve, remove the keeper
pin, disc (if fitted), spring and valve.
17. Drive out the roll pin and remove the spring and ball check valve
adjacent to the BAR valve.

5A-94 AUTOMATIC TRANSMISSION
ASSEMBLY PROCEDURE
The transmission is assembled in modular fashion and details
of assembly for each module are given under the appropriate
subject. Refer to table 8.1 (at the end of Section 8.3) for the
torque specifications to be applied, and to table 9.10 in section
9.6 for details of all special tools required, when performing
assembly procedures. Technicians overhauling these
transmissions will also require a selection of good quality Torx
bit sockets, in particular numbers 30,40 and 50, and an 8 mm,10
mm and 12 mm double hex socket.
Transmission
Notice
1. Ensure that the B1R circlip is fitted to the case. (If this is not
fitted, the valve will peen its way into and through the
separator plate.)
2. Ensure that the ‘E’ clip is fitted to the cross shaft.
3. Ensure that all aspects of the parking mechanism are
working.
To assemble the transmission, proceed as follows:
1. Turn the transmission case upside down on the bench and
mount it to the transmission cradle No.0555-331895.
2. Install all fittings, plugs and the breather, applying a sealant
where applicable, Tighten the fittings to specifications.
Ensure that the breather is clear, and check that the lube
fitting in the rear of the case is fitted and clear of obstruction.
3. Assemble the B1R valve and spring, and secure with the
irclip. Refer to Ensure that the circlip is completely seated
in its groove.
4. Install the rear servo lever and pivot pin.
Notice
The lever must pivot freely on its pin.