1989 MITSUBISHI GALANT Service Repair Manual

34-16 REAR SUSPENSION - Torsion Axle and Arm Assemblv
L
.ubrication points
12ElOl
SERVICE POINTS OF REMOVALM34PBAC
12. REMOVAL OF SHOCK ABSORBER LOWER MOUNTING
BOLT/ 13. TRAILINGARM
MOUNTINGBOLT
14. TORSION AXLE AND ARM ASSEMBLY
(1) Jack up the torsion axle and arm assembly in order to
raise it slightly.
I
Caution
1.Always insert a wooden block between the jack
receptacle and the axle beam and place the jackh
at the center of the axle beam.
2.Be sure that the jack does not contact the lateral
rod.
(2) Remove the shock absorber’s mounting bolts and the trailing arm mounting bolt.
(3) Lower the jack slowly, and then remove the torsion axle and arm assembly.
INSPECTION
l Check the trailing arm and axle beam for deformation or
damage.
0 Check the torsion bar for damage.
lCheck the bushings for cracking, deterioration, or unusual
wear.
NOTE
For information concerning the replacement of the trailing
arm bushing, refer to
P.34-8.
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REAR SUSPENSION -Torsion Axle and Arm Assembly34-17
Lateral rodmounting bolt
1 Turn 180” or more ant1
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SERVICE POINTS OF INSTALLATIONMtOPDAH
11. INSTALLATION OF LATERAL ROD MOUNTING BOLT
Install the lateral rod mounting bolt from the direction
shown in the illustration.
4. INSTALLATION OF WHEEL BEARING NUT (1) After tightening the wheel bearing nut to 20
Nm (14 ft.lbs.),
turn the hub a few times to seat the bearing.
(2)In order to seat the bearing properly, turn the hub (brake
drum) 180” or more and then return it 360” or more;
repeat this procedure again three or more times.
(3) Return the wheel bearing nut to 0 Nm
(0 ftlbs.).
(4) After tightening the wheel bearing nut at a torque of 10 Nm (7
ftlbs.), rotate the hub again in the same way as
described in step (2) so as to seat the bearing.
(5) Then once again tighten the wheel bearing nut to 10 Nm (7 ft.lbs.).
(6) Install the lock cap and cotter pin.
(7) If the position of the cotter pin is not matched with the holes of the lock cap, reposition the lock cap so that the
holes align. If this can not be accomplished, back off the
nut by not more than 15”.
Caution
Check to be sure that the lock nut cannot be
loosened manually.
(8) After setting the cotter pin in place, seat the bearing in
the same manner as in step (2).

34-18 REAR SUSPENSION - Torsion Axle and Arm Assembly

WA-A
17-26 Nm
12-19 ftlbs.50-60 N
m
9-14 Nm
7-10 ft.lbs.200-2iO Nm144-189 ftlbs.
12A0355
loo-120 Nm*72-87 ft.lbs.*
*Check the Brake Disc Runout. and
*Check the Rear Disc Brakes Drag-ging Torque, and Adjust. (Refer to
Procedures.)*Checking Parking Brake LeverStroke. (Refer to GROUP 36-Service Adjustment Procedures.)
Removal steps
1. Parking brake cable
2. Brake tube and hose bracket
*I)12. Shock absorber lower mounting bolt
3. Rear disc
brake
(Refer to P.34-16.)
4. Brake disc4*13. Trailing
arm
mounting
bolt (Refer
to
P.34-
5. Hubcap16.)
l
6. Flange nut (Refer to GROUP 33B-Rear4*14. Torsion axle and arm assembly (Refer to
Suspension Assembly.)P.34-16.)
7. Washer
l *
8.
Speed sensor 9. Rear axle assembly10. Dust shield
11. Lateral rod mounting bolt (Refer to P.34-14.)
NOTE*:Indicates part which should be temporarily tightened, andthen fully tightened with the vehicle in the unladencondition.
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REAR SUSPENSION - Specifications34-19
SPECIFICATIONS
GENERAL SPECIFICATIONS M34cA-0
Items Specifications
Suspension system Double wishbone suspension type
Coil spring Wire dia. x
O.D. x
free length mm (in.)
11.0 x 106.0 x
389.5 (.43 x 4.17 x
15.3)
Coil spring identification colour
Pink x

1
Spring constant N/mm
(Ibs./in.) 20.0 (112.0)
Shock absorber Type
Hydraulic, cylindrical, double-acting type
Max. length mm
(in.) 583 (23.0)
Min. length mm (in.) 391 (15.4)
Stroke mm (in.) 192 (7.6)
Damping force [at 0.3m/sec.
(0.9
ft./sec.)l
ExpansionN (Ibs.) 1,200 (265
)
Contraction
N (Ibs.) 450 (99
)
SERVICE SPECIFICATIONS Items
Standard value
Toe-in
Camber mm (in.)
Lower and upper arm ball joint starting torque
Protruding length of stabilizer link installation nut
Stabilizer link ball joint starting torque Nm
(inlbs.)
mm (in.)
Nm
(inlbs.)
Specifications
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. .
3+3 (.12+.12)
-1”00’+30’
2-9 (17-78)
9-l 1 (.354-.433)
1.7-3.2 (15-28)

34-20
REAR SUSPENSION - SDecifications
TORQUE SPECIFICATIONSM34cGB
Items
Rear suspension assembly Center exhaust pipe to main muffler installation boltHook installation bolt
Hanger installation bolt
Center exhaust pipe to front exhaust pipe installation nut
Rear shock absorber installation nut
Differential carrier to differential support member
Differential support member to body
Brake tube bracket to rear shock absorber
Differential carrier to propeller shaft
Crossmember bracket to body
Crossmember bracket to crossmember Rear brake assembly installation bolt
Upper and lower arm
Upper arm to crossmember
Upper arm to knuckle
Lower arm to crossmember
Lower arm to knuckle
Trailing arm
Companion flange to rear axle shaft
Companion flange to drive shaft
Trailing arm to crossmember
Upper arm to knuckle
Lower arm to knuckle
Rear shock absorber (lower)
Rear brake assembly installation bolt
Rear speed sensor jhock
absorber assembly
Shock absorber installation nut
Shock absorber installation bolt Brake tube bracket to rear shock absorber
Piston rod tightening nut
itabilizer bar
Differential support member to body
Crossmember bracket to crossmember
Crossmember bracket to body
Stabilizer link to stabilizer bar
Nmftlbs.
30-4022-2
9
IO-157-11
IO-157-11
30-4022-2

9
40-5029-3

6
80-10058-72
110-13080-94
17-26
12-19
30-3522-2
5
70-8551-61
110-13080-94
50-6036-4

3
140-160101-116
60-7243-5

2
90-I 1065-80
60-7243-5

2
160-220116-159
55-65
40-47
140-160101-116
60-7243-5
2
60-7243-5

2
90-I 1065-80
50-6036-4

3
9-14
7-10
40-5029-3
6
90-I 1065-80
17-26
12-19
20-2514-18
110-13080-94
110-13080-94
70-8551-61
35-4
5
25-33
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REAR SUSPENSION - Special Tools34-21
SPECIAL TOOLS
M34DA-B
nnl
NameI II‘S
MB991 113-01
OPTIONAL: AVAILABLE FROM O.T.C.
Removal of the rear axle shaft MB99021 l-01
MB990847-01
Lower armbushing
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34-22REAR SUSPENSION - Special Tools/Troubleshooting
OPTIONAL: AVAILABLE FROM O.T.C.
TROUBLESHOOTING
Symptom
Squeaks or otherabnormal noiseProbable cause
Remedy
Loose rear suspension installation bolts and nuts Retighten
Malfunction of shock absorber
Worn bushings Replace
Upper arms and/or lower arms deformed or
damaged
Poor ride
3ody tilting Trailing arms deformed or damaged Crossmember
deformed or damaged
Excessive tire inflation pressure
Malfunction of shock absorber
Weak or broken springs
Stabilizer bar and/or stabilizer link deformed or
damaged
Weak or deteriorated bushings
Weak or broken springs
Upper arms and/or
lower arms deformed or
damaged Adjust the pressure
Replace
Replace
Trailing arms deformed or damaged
Crossmember deformed or damaged
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REAR SUSPENSION - Service Adjustment Procedures34-23
12AOO83
12A0081
SERVICE ADJUSTMENT. PROCEDURES
REAR WHEEL ALIGNMENT INSPECTION mm
The rear suspension assembly must be free of worn, loosen or
damaged parts prior to measurement of wheel alignment.
TOE-IN
(1) Measure the toe-in with a toe-in gauge.
Standard value:
3+3 mm (.12+.12 in.)
(2) If the toe-in is not within the standard value, adjust it by moving the mounting bolts located on the crossmember
side of the trailing arm.
NOTE
Make the adjustment by moving the left and the right bolts
equally.
Movement of one division on the scale will cause toe-in
variation of about 2 mm
(.08 in.).
CAMBER
(1) Measure the camber with a camber/caster/kingpin gauge.
Standard value:
-1”OO’f30’
(2) If the camber is not within the standard value, adjust it bymoving the mounting bolt located on the crossmember
side of the upper arm.
NOTE
Movement of one division on the scale will cause camber
variation of about 15’.
Caution
1. As toe-in will vary 0.9 mm LO35 in.) for every
camber scale adjustment, adjust the toe after
adjusting camber.
2. The difference between the left and the right camber shall be less than 15’.
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