1989 MITSUBISHI GALANT Service Repair Manual

33B-110 ACTIVE-ELECTRONIC CONTROL SUSPENSION - i=ttbborber
SHOCK ABSORBER ASSEMBLYhl33MA-A[EMOVAL
AND INSTALLATION
1989 models
40-50 Nm
29-36 ft.lbs.
Removal
l *
l *
8-10 Nm
steps
1.Air tube2.O-ring3.Bush4.Actuator connector5.Actuator6. Rear height sensor rod
6
17-26 Nm 9127 ft.lbs;.i
1990 modelsz??
4.8-7.2 Nm
4-5 ftlbs.
\
6 80-100
Nm*
58-72

ft.lbs.*
7. Shock at%orber
upper mounting nuts
8. Shock absorber lower mounting bolts
9. Shock absorber assemblyWA0331
NOTE *: Points marked with an asterisk should first
be tightened
provisionally, then tightened fully when the vehicle is
empty.
SERVICE POINTS OF REMOVALm33hlsN
9. REMOVAL OF SHOCK ABSORBER ASSEMBLY
(1) Jack up the torsional axle and arm assembly and keep it lifted up to some degree.
Caution
1.Always insert a wooden block between the jack receptacle and the axle beam and place the jack
at the centre of the axle beam.
2. Make sure that the jack does not contact the lateral rod.
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Shock AbsorberACTIVE-ELECTRONIC CONTROL SUSPENSION - Assembly339-111
(2) Remove the shock absorber upper mounting nuts andthe lower mounting bolts, and then remove the shock
absorber assembly.
Apply rubber greaseI
Air tubeabsorber assembly side 12A0327
Vehicle-height switch
741IOO08INSPECTION
M33McA8
CHECKING FOR SHOCK ABSORBER ASSEMBLY AIR LEAK-
AGE
For information concerning checking for air leakage of the
shock absorber assembly, refer to the section concerning the
strut assembly
(P.33B-98.)
CHECKING ACTUATOR
For information concerning the checking of the actuator, refer
to the troubleshooting guide and the service adjustment procedures section.
SERVICE POINTS OF INSTALLATION
M33MEAF
1. CONNECTION OF AIR TUBE (1) After applying a coating of rubber grease to the O-ring, install the O-ring, bush and joint at the shock absorber
assembly side.
Caution
1.The O-ring might be damaged if it is installed at
the air tube side and then the insertion is made.
2. The bush must be installed so that the projec-
tion part is facing in the direction indicated in
the illustration.
(2) First insert the air tube until resistance is felt, and then push in the tube until the painted place on the air tube.
Caution
Air leakage may occur if the air tube connection is
not complete and secure.
(3) In order to prevent double-folding of the air spring diaphragm after reconnection of the air tube. the
vehicle-height switch should be pressed (wrth the
vehicle lifted) two seconds or more so as to
Supply air
to the air spring.
NOTE
By using the switch as described above, air should be
introduced to the rear air springs and front air springs, in
that sequence, for five seconds each.
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339-l 12ACTIVE-ELECTRONIC CONTROL SUSPENSION - :i%rher
DISASSEMBLY AND REASSEMBLYM33MLbA
Disassembly stepsl +
I. Joint** 2. O-ring3. Actuator bracket
mounting nut
4. Actuator bracket
+e I)+ 5. Piston rod tightening nut
6. Washer
7. Upper bushing
(A)I)+ 8. Bracket assembly 9. Spring pad
10, Upper bushing (B)11. Collar
l a 12. Coil spring 13. Shock absorber
I\
cd 1
d~-xi Nm-2m
\
33-40 tt.lbs. w 3
45-55
’a-a?!3Nm -==‘33-40 If+Ihc -5
\
\8
\
‘\ -9 12AO329
MB991237
MB991 239
12LO253
SERVICE POINTS OF DISASSEMBLY hl33MVA8
5. REMOVAL OF PISTON ROD TIGHTENING NUT (1) Compress the
coil spring using the special tool.
Caution
Do not use an air tool to tighten the bolt of the
special tool.
(2) While holding the piston rod, remove the piston rod tightening nut.

Shock AbsorberACTIVE-ELECTRONIC CONTROL SUSPENSION - Assemblv33B-113
seat
12AOO49
, BracketTSB Revision
12AO310
1
O-ring
INSPECTIONM33MOAB
l Check the rubber parts for damage.
lCheck the coil springs for crack, damage or deterioration.
0Check the shock absorber for oil leakage malfunction and
abnormal sound.
SERVICE POINTS OF REASSEMBLY
M33MWAB
12. INSTALLATION OF COIL SPRING (1) Use the special tool (MB991237
and MB991239)
to
compress the coil spring and insert it in the shock
absorber.
(2) Align the edge of the coil spring to the position of the
shock absorber spring seat as shown.
8. INSTALLATION OF BRACKET ASSEMBLY/5.
PISTON
ROD TIGHTENING NUT
(I) With the position of the bracket assembly as shown in the figure, tighten the tightening nut to the specified
torque.
(2) Install the coil spring so that the lower edge fits into
the spring seat groove and the upper edge fits into the
spring pad groove, then remove the special tool
(MB991 237 and MB991 239).
2. INSTALLATION OF
O-RING/l. JOINT
Apply a coating of rubber grease to the O-ring, install it to the joint, and then install to the piston rod.

33B-114 ACTIVE-ELECTRONIC CONTROL SUSPENSION - ~:h%pension
REAR SUSPENSION ASSEMBLYM33GA-A
REMOVAL AND INSTALLATION
50-60 Nm
17-26 Nm 36-43 ftlbs.
12-19
ft.lbs. 2
,
9-14
‘Nm7-10 ftlbs.
Vehicles with A.B.S. 9-14 Nm
7-10 ft.lbs.
12A0366
Removal steps1. Parking brake cable
2. Brake tube and hose bracket
3. Rear disc brake
4. Brake disc
5. Hub cap
l + 6. Flange nut
7. Washer
8. Speed sensor
9. Rear axle assembly
10. Dust shield 200-260
Nm
12A0355
%I*Removal of Trunk Room Srde Tnm
Post-installation Operationl installation of Trunk Room SideTrim. (Refer to GROUP 52-Trims.)l Check the Brake Disc Runout, andAdjust.(Refer to GROUP
35-ServiceAdjustment. Procedures.)l Check the Rear Disc Brakes Drag-ging Torque, and Adjust.(Refer to GROUP
35-ServiceAdjustment Procedures.)achecking Parking Brake LeverStroke.(Refer to GROUP
36-ServiceAdjustment Procedures.)@Check the Rolling Diaphragm forDouble-folding.(Refer to P.33B-89.)
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ACTIVE-ELECTRONIC CONTROL SUSPENSION - ~~%f;pension 33B-115
Removal
8-10 Nm
loo-120 Nm*72-87 ftlbs.’
steps
l * 11.Air tube12.Joint13.O-ring14.Bush15.Actuator connector
40-50 Nm
29-36
fi*‘v’g
SO-100
Nm*
58-72 ft.lbs.*
I
18
12AO337
16.Actuator17.Rear heiaht sensor rod mounting bolt (1989 models)
::**+*
17-l.Rear height sensor rod mounting nut
(From 1990 models)18.Lateral rod mounting bolt (body side)
19.Shock absorber upper mounting nuts20.Trailling arm mounting bolts21. Rear suspension assembly
NOTE *: Points marked with an asterisk shoud first be tightened
provisionally, then tightened fully when the vehicle is
empty.
1989 models
-From 1990 models
17-26 Nm12-19 ftlbs. 17
12AoG37
SERVICE POINTS OF REMOVAL
M33GBBE
18. REMOVAL OF LATERAL ROD MOUNTING BOLT (BODY SIDE)
(1) Remove the lateral rod from the body.
(2) Secure and hold the lateral rod to the axle beam with wire, etc.
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33B-116 ACTIVE-ELECTRONIC CONTROL SUSPENSION - z%rension
‘3.
Apply rubber grease
1Paint
Install at the shockabsorber side.
12A0327
19. REMOVAL OF SHOCK ABSORBER UPPER MOUNTING
NUTS/PO. TRAILING ARM MOUNTING
BOLTS/Zl.
REAR SUSPENSION ASSEMBLY
(1) Jack up the torsion axle and arm assembly in order to raise it slightly.
Caution 1. Always insert a wooden block between the jack receptacle and the axle beam and place the jack
at the centre of the axle beam.
2. Make sure that the jack does not contact the lateral rod.
(2) Remove the shock absorber mounting bolts and the trailing arm mounting bolts.
(3) Lower the jack slowly, and then remove the rear
suspension assembly.
INSPECTION
M33GCBC
l Check the trailing arm and axle beam for deformation or
damage.
l Check the torsion bar for damage.
l Check the lateral rod for damage or deformation.
l Check the bushings for cracking, deterioration, or unusual
wear.
BUSHING REPLACEMENT
TRAILING ARM BUSHING
Refer to
P.33B-121.
LATERAL ROD BUSHINGRefer to
P.33B-118.
SERVICE POINTS OF INSTALLATIONM33GDSC
11. CONNECTION OF AIR TUBE
(1) After applying a coating of rubber grease to the O-ring, install the O-ring, bush and joint at the shock absorber
assembly side.
Caution
1. The O-ring may be damaged if it is installed at the air tube side when the connection is made.
2. The bush must be installed so that the projec- tion part is facing in the direction indicated in
the illustration.
(2) First insert the air tube until resistance is felt, and then push in the tube until the painted place on the air tube.
Caution
Air leakage may occur if the air tube
connectYon is
not complete and secure.
1 TSB RevisionI

ACTIVE-ELECTRONIC CONTROL SUSPENSION - ii%%;%% god 336417
12AOO88
LATERAL ROD
REMOVAL AND INS
TALLATION
i
80-100
Nm*
‘3J@a-

-
58-72 ft.lbs.*
6. INSTALLATION OF THE FLANGE NUT
After tightening the flange nut, align with the indentationin the spindle, and crimp.
MBJUA-A
6’ rrom IJJU mooers1989 models
9-14Nms 7v7-10 ft.lbs.12A0602
Removal steps
*I)111.Rear height sensor rod mounting bolt (1989 models)
Rear height sensor rod mounting nut (From 1990 models)
l
+ 2.Rear height sensor bracket mounting
bolt
3.Rear height sensor bracket B4.Rear heigh sensor bracket A
::Spacer Lateral rod mounting bolt (body side)
++ 7. Lateral rod mounting bolt (axle beamNOTEside)+: Points marked with an asterisk should first be tightenedLateral rod
provisionally, then tightened fully when the vehicle is9.Lateral rod bushingempw.
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n
I