clutch SSANGYONG MUSSO 1998 Workshop Repair Manual

5D1-6 TRANSFER CASE (PART TIME 4408)
Diagnostic Table
Connect a service connector. If turn the ignition switch ‘ON’
‘4WD CHECK’ indicator light will come on for 0.6 second and
turn off for 3 seconds and then display a defective code 3
times continuously.
No.Defective Code
Malfunctioning Part
1
2
3
4
5TCCU
Shift Motor
Synchronizer Clutch
Speed Sensor
Hub Solenoid
4WD
CHECK
Light
ON
OFF
Defective Code
4WD
CHECK
Light
ON
OFF
Defective Code
4WD
CHECK
Light
ON
OFF
Defective Code
4WD
CHECK
Light
ON
OFF
Defective Code
4WD
CHECK
Light
ON
OFF
Defective Code

TRANSFER CASE (PART TIME 4408) 5D1-15
1 Nut
2 Spring Washer
3 Oil Seal
4 Companion Flange
5 Snap Ring
6 Torsional Damper
7 Pipe Plug
8 Bolt
9 Bolt
10 Speed Sensor and Harness
Bracket
11 Speed Sensor Assembly
12 Speed Sensor
13 O-Ring
14 Locking Clip
15 Connector
16 Motor Assembly
17 Oil Seal
18 Bearing
19 Bolt
20 Tag
21 Decal
22 Wiring Harness Clip
23 Bolt
24 Cover Assembly
2 5 Nut
26 Snap Ring
27 Bearing
28 Needle Bearing
29 Cover
30 Clutch Coil Assembly
31 Speed Gear
32 Oil Seal
33 Return Spring
34 Magnet
35 Clutch Housing36 Lock-up Assembly
37 Snap Ring
38 Lock-up Hub
39 Sleeve Return Spring
40 Lock-up Collar
41 Rail Shaft
42 Lock-up Fork
43 Snap ring
44 Spacer
45 Driven Sprocket
46 Driven Sprocket
47 Drive Chain
48 Shaft and Pump Assembly
49 Screw
50 Pump Housing
51 Pump Gear Set
52 Pump Cover
53 Spring Pin
54 Hose Clamp
55 Hose Coupling
56 Oil Strainer
57 Output Shaft
58 Reduction Hub
59 Shift Fork Assembly
60 Shift Fork Facing
61 Pin, Roller and Retainer
62 Pin
63 Cam Roller
64 Retainer
65 Reduction Shift Fork
6 6 Nut
67 Plane Washer
68 Oil Seal
70 Companion Flange
71 Spacer
72 Front Output Assembly73 Breather Hose
74 Bolt
75 Front Adapter Assembly
76 Snap Ring
77 Oil Seal
78 Spiral Pin
79 Front Adapter
80 Snap Ring
81 Bearing
82 Input Shaft Assembly
83 Sleeve Assembly
84 Needle Bearing
85 Input Shaft
86 Thrust Washer
87 Retaining Ring
88 Thrust Plate
89 Sun Gear
90 Gear Carrier Assembly
91 Planet Carrier
92 Pinion Shaft
93 Thrust Washer
94 Pinion Gear
95 Needle Roller Bearing
96 Pinion Needle Spacer
97 Electric Shift Cam
98 Torsion Spring
99 Spacer
100 Shift Shaft
101 Case Assembly
102 Oil Seal
103 Snap Ring
104 Bearing
105 Dowel Pin
106 Ring Gear
107 Case

TRANSFER CASE (PART TIME 4408) 5D1-17
1. Remove the 9 bolts, wiring harness clip and
identification tag.
Notice
Identification tag has information required for ordering
replacement parts, so be careful not to lose it.
2. Using a ‘-‘ driver, pry and disconnect the sealant
bond of the cover and required case.
3. Remove the oil seal, bearing, 3 nuts and clutch coil
assembly of the electric shift unit.
<Cover Assembly>
14 Bolt
15 Wiring Clip
16 Identification Tag
17 Cover Assembly
18 Oil Seal
19 Bearing
2 0 Nut
21 Clutch Coil Assembly
22 Snap Ring
23 Ball Bearing4. Remove the snap ring and pull out the ball bearing
from the cover to remove the speed gear.
5. Pull out the needle bearing from the cover.
6. Pull out the oil seal from the slot in cover.
7. Remove the magnet form the slot in case.
8. Remove the return spring from the rail shaft.
9. Be careful not to damage the metal surface when
removing the sealant of the cover and case.
24 Needle Bearing
25 Cover
26 Magnet
27 Speed Gear
28 Oil Seal
29 Return Spring
38 Rail Shaft
55 Output Shaft
111 Transfer Case

5D1-18 TRANSFER CASE (PART TIME 4408)
<Lock-up Shift Parts>
1. Remove the retaining ring and clutch housing from the shift
collar hub.
2. Remove the shift collar hub from the output shaft.
3. Separate the 2WD - 4WD lock-up assembly and lock-up
fork from the output shaft and remove the rail shaft.
4. To remove the 2WD - 4WD lock-up assembly, separate the
return spring, lock-up hub and snap ring from the lock-up
collar.
30 Retaining Ring
31 Clutch Housing
32 Shift Collar Housing
33 2WD/4WD Lock-up Assembly
34 Snap Ring
35 Lock-up Hub
36 Return Spring
37 Lock-up Collar
38 Rail Shaft
39 Lock-up Fork
55 Output Shaft
40 Snap Ring
41 Spacer
42 Drive Sprocket
43 Driven Sprocket
44 Drive Chain
55 Output Shaft(Rear)
71 Output Shaft(Front)
<Drive Chains>
1. Remove the snap ring and spacer from the output shaft.
2. Remove the drive chain, driven sprocket and drive sprocket
from the output shaft.
3. Separate the chain and sprocket when removing the
assembly.
<Pump Parts>
1. Remove the 4 bolts and retainer and separate the output
shaft and rear pump cover.
2. Loosen the hose clamp and remove the hose coupling from
the pump housing.
3. Remove the hose clamp, hose coupling and strainer.
4. Remove 2 pump pins and spring from the output shaft.
5. Separate the front pump and remove the output shaft.
45 Shaft and Pump Assembly
46 Bolt
47 Pump Retainer
48 Rear Pump Cover
49 Hose Clamp
50 Hose Coupling
51 Pump Housing
52 Pump Pin
53 Spring
54 Front Pump Cover
55 Output Shaft
56 Strainer

TRANSFER CASE (PART TIME 4408) 5D1-31
Lockup Shift
1. Install the lockup hub and return spring to the lockup collar
and insert the snap ring.
2. Install the rail shaft through reduction shift fork assembly
previously installed and into the blind hole in case.
3. Engage the lockup fork into the 2WD/4WD groove and
check operation.
4. Install the shift collar hub to the output shaft spline.
5. Install the previously assembled electric shift cam and
assemble the clutch housing as follows.
lRotate the shift cam assembly to right so that the end of
the torsion spring contacts with reduction shift fork side.
lHolding the rail shaft, lift up the fork assembly slightly.
Adjust electric shift cam assembly so that the roller on
reduction shift fork assembly is in groove in shift cam
and button on lockup fork is on cam end.
lInstall the clutch housing over shift collar hub and insert
the retaining ring into the clutch collar hub groove.
30 Retaining Ring
31 Clutch Housing
32 Shift Collar Housing
33 2WD/4WD
Lockup Assembly
34 Snap Ring
38 Rail Shaft
39 Lockup Fork
59 Reduction Shift Fork Assembly
100 Electric Shift Cam
101 Torsion Spring35 Lockup Hub
36 Return Spring
37 Lockup Collar
38 Rail Shaft
39 Lockup Fork
55 Output Shaft

5D1-32 TRANSFER CASE (PART TIME 4408)
Cover
1. Position the cover to be the open end up on the work table.
2. Position the end of needle bearing to be identification mark
up and press into the cover until upper end of bearing is
40.47 - 40.97mm below cover face that contacts with transfer
case.
3. Press the ball bearing into the cover and install the snap
ring .
4. Install remaining parts as follows.
lInstall the 4 O-rings on the stud bolts of the clutch coil
assembly.
lInstall the clutch coil assembly inside the cover and
tighten 3 nuts.
18 Oil Seal
19 Bushing
20 Nut
21 Clutch Coil Assembly
22 Snap Ring
23 Ball Bearing
24 Needle Bearing
25 Cover
Tightening Torque 8 - 11 Nm
lInstall the bearing and motor bearing into the cover.

5D1-36 TRANSFER CASE (PART TIME 4408)
TRANSFER CASE CONTROL UNIT
(TCCU)
System Description
TCCU is located under the front left handed seat and permits
the vehicle to shift from two-wheel drive to four-wheel drive
(and back shift) according to driver’s switch operation during
driving (For the shifting between 4WD HIGH and 4WD LOW,
stop the vehicle).
1. Shifting from 2H to 4H
lPosition the transfer case switch from '2H' to '4H'.
lShifting is possible during driving.
l'4WD Hl' indicator light will turn on.
2. Shifting from 4H to 2H
lPosition the transfer case switch from '4H' to '2H'.
lShifting is possible during driving.
l'4WD Hl' indicator light will turn off.
3. Shifting between 4H and 4L
lShifting is possible when the vehicle is almost stopped
(below approx. 2 km/h), so it would be better stop the
vehicle.
lIn case of manual transmission equipped vehicle, apply
clutch pedal.
lIn case of auto transmission equipped vehicle, put the
lever position into 'N'.
lPosition the transfer case switch '4H' to '4L' or '4L' to
'4H'.
lAccording to the shifted position, indicator light will turn
on.
Notice
If there are malfunctions during shifting,'4H' or '4L' indicator
light will blink.

TRANSFER CASE (PART TIME 4408) 5D1-37
Inspection and Repair
1. 4H and 4L indicator light inspection
lWhen turn the ignition switch to "ON" position, 4H and
4L indicator light will turn on for 0.6 second and will turn
off immediately.
Notice
If indicator light does not turn on, check bulb, wiring harness
and TCCU.
2. TCCU inspection
Pin No.
Operation Condition
4H or 4L
2H
4H indicator light ON
4H indicator light OFF
2H or 4H
4L
Clutch pedal applied
Clutch pedal released
4L indicator light ON
4L indicator light OFF
Motor OFF
Motor ON
Motor OFF
Motor ON
Auto locking hub ON
Auto locking hub OFFVoltage(V)
4.75 - 5.35
0 - 0.50
< 1.00
> 11.00
4.75 - 5.35
0 - 0.50
< 0.50
> 11.00
< 1.00
> 11.00
< 1.00
> 11.00
< 1.00
> 11.00
> 11.00
< 1.00 J1 - 7
J1 - 8
J1 - 13
J1 - 14
J1 - 15
J1 - 16
J1 - 17
J1 - 23
Notice
lDC 12V for the TCCU operation should be maintained.
lIn case of J1-8 and J1-15, indicator light will turn on for 0.6
second when turn the ignition switch ON.
lIf 4H and 4L indicator lights remain turned on when turn the
ignition switch on or during driving, perform the TCCU
diagnosis.

5D2-4 TRANSFER CASE (TOD)
FUNCTION DESCRIPTION
lTOD System Select Mode (4H and 4L)
4H is the mode when drive normally of which gear ratio is 1:1 and 4L mode distributes power to front and rear
wheels 50:50 of which gear ratio is 2.48:1.
lTOD System Function (select 4H mode)
TOD system controls clutch mechanism to comply with rotation in front and rear propeller shaft and if its difference
exceeds the permissible range, corresponding power is distributed into front wheel through EMC (Electro-Magnetic
Clutch).
Hall effect sensor signals speed on front and rear propeller shafts going through with TOD control unit.
Transfercase clutch coil is activated by variable current on exceeding difference of speed in front and rear propeller
shafts.
lFunction of 4L Mode
When select 4L mode, EMC is locked to apply maximum torque into front and rear propeller shafts. Shift motor
rotates also 4L position by rotation of cam thus propeller shaft torque changes from 1:1 to 2.48:1 by planetary
gear set.
lShift Motor
It locates backside transfer case, which drives rotary helical cam.
When mode select switch changes to 4L, shift fork is on position for 2.48:1 by rotation of helical cam.
lTransfer Case
TOD transfer case distributes power into front and rear axle by operation of 4H/4L switch and shift motor.
Shifting 4H to 4L, is performed towards reducing HI-LO collar by means for connection HI-LO shift fork with
output shaft in order to join with planetary gear. Torque transmits input shaft then sun gear rotating front planetary
gear. Front planetary gear join with output shaft and drives LO position.

TRANSFER CASE (TOD) 5D2-5
Definitions
Rear Speed Sensor A Hall Effect speed sensor which produces a square wave. 0-5Vdc signal in
response to a rotating 30 tooth wheel coupled to the rear propshaft inside the
Transfer Case. Each rotation of the rear propshaft will result in 30 speed sensor
pulse.
Front Speed SensorA Hall Effect speed sensor which produces a square wave. 0-5Vdc signal in
response to a rotating 30 tooth wheel coupled to the front propshaft inside the
Transfer Case. Each rotation of the front propshaft will result in 30 speed sensor
pulse.
EMC An Electromagnetic clutch used to control the amount of torque applied to the
front propshaft.
TOD
TMTorque on DemandTM.
Duty Cycle Duty Cycle is the time the EMC is on divided by the period in which it is being
modulated.
Touch-off A minimum amount of duty cycle applied to the EMC.
Front OverrunA condition where the front propshaft is turning at a rate which is faster than the
rear propshaft.
Rear Overrun A condition where the rear propshaft is turning at a rate which is faster than the
front propshaft.
High RangeThe highest (numerically lowest = 1 :1) gear ratio between the input and outputs
of the Transfer Case.
Low RangeThe lowest (numerically highest = 2.48:1) gear ratio between the input and outputs
of the Transfer Case.
4H/4L Switch A switch which selects the desired gear ratio.
Shift Motor Electric motor which changes the Transfer Case range.
Position Encoder A set of 4 Gray code switches which provide feedback to the TCCU indicating the
position of the Shift Motor.
Clutch Interlock Switch A switch on vehicles equipped with a manual transmission which indicates that
the clutch pedal is depressed.
Neutral Safety Switch A switch on vehicles equipped with an automatic transmission which indicates
that the transmission is in neutral.
Shift Inhibit Speed The vehicle speed above which Transfer Case shifts are disallowed. Vehicle speed
is indicated by propshaft speed measurement.