MITSUBISHI ECLIPSE 1991 Service Manual

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REAR
SUSPENSION
LATERAL ROD.................................................11
REAR AXLE HUB............................................14
REARSUSPENSIONASSEMBLY..................5
SERVICE ADJUSTMENT PROCEDURES.......3Rear Hub Rotary-Sliding Resistance
(Torque)Adjustment.....................................4Rear Wheel Alignment Inspection
...............3Wheel Bearing End Play Adjustment
..........3
SHOCKABSORBERASSEMBLY...................8
SPECIAL TOOL................................................3
SPECIFICATIONS.............................................2
GeneralSpecifications..................................2
ServiceSpecifications...................................2Torque Specifications
...................................2
TORSION AXLE AND ARM ASSEMBLY......12
TROUBLESHOOTING......................................3
REARSUSPENSIONASSEMBLY . . . . . . . . . . . . . . . . . .21
SHOCK ABSORBER ASSEMBLY...................32
SERVICE ADJUSTMENT PROCEDURES.......20Rear WheelAlignment
Inspection................20
SPECIAL TOOLS.............................................18
SPECIFICATIONS.............................................16
GeneralSpecifications..................................16
ServiceSpecifications...................................16LTorqueSpecifications...................................17
Lubricant.......................................................17
STABILIZER BAR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
TRAILING ARM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
TROUBLESHOOTING......................................19
UPPER AND LOWER ARM............................25
CONTENTSN17AA-

17-2REAR SUSPENSION - SpecificationsSPECIFICATIONS

GENERAL SPECIFICATIONS
LN17CAA
ItemsVehicles with 1.8L EngineVehicles with 2.0L DOHC
Engine
jSuspension system
3-link, torsion axle with coil spring type
Coil spring
Wire dia.
x O.D. x free length
mm (in.) 10.1 x 105.1 x 336.510.2 x 105.2 x 316.5
(40 x 4.14 x 13.25)(40 x 4.14 x 12.46)
[Coil spring identification color]
[Light Blue
x 11[Orange x 11Spring constant
N/mm
(Ibs./in.) 20 (112.0)23 (128.8)
Shock absorber
TypeHydraulic, cylindrical, double-acting type
Max. length
mm (in.) 495 (19.5)485 (19.1)
Min. length
mm (in.) 315 (12.4)315 (12.4)
Strokemm (in.) 180 (7.1)170 (6.7)Damping force [at 0.3 m/set. (0.9
ft./set.)]
ExpansionN (Ibs.)800 (176)
ContractionN (Ibs.)300 (66)
Wheel bearing
TypeUnit ball bearing
SERVICE SPECIFICATIONS
Items
Standard valueToe-in (Left-right difference)
Camber
LimitWheel bearing end play
Rear hub rotary-sliding resistance
Rear hub rotary-sliding torque
NOTEToe-in and camber cannot be adjusted.mm (in.)
mm (in.)
N (Ibs.)
Nm
(ftlbs.)
TORQUE SPECIFICATIONS
Specifications
0+3 (Of.1 18)
-45’
f 30’
0.01 (004) or less
31
(7) or less
1.8
(1.30) or lessNI’ICB-A
ItemsNmft.lbs.
Wheel bearing nut
Shock absorber upper mounting nut
Shock absorber lower mounting nut
Lateral rod mounting nut (body side)
Lateral rod mounting bolt (axle beam side)
Trailing arm mounting bolt
Piston rod tightening nut
Brake hose and tube bracket mounting bolt
Caliper assembly mounting nut
Rear speed sensor mounting bolt
200-260
40-50
80- 100
80-100
100-120
100-120
20-2517-26
50-609-14144-188
29-36
58-72
58-72
72-87
72-87
14-18
12-19
36-43
I7-10
Nl7CGA

Special Tools/Troubleshooting/REAR SUSPENSION - Service Adjujltment Procedures
SPECIAL TOOLN17DA.A
ToolNumberName1 Use1
L-451 4
Spring compressorRemoval and installation of the coil spring
bodyTROUBLESHOOTINGNI’IEA-A
Symptom
Squeaks or other
abnormal noiseProbable cause
Loose rear suspension installation bolts and nuts
Malfunction of shock absorber
Worn bushings
Remedy
Retighten
Replace
Poor rideExcessive tire inflation pressure
Malfunction of shock absorberWeak or broken springs
Adjust the pressure
Replace
Body tiltingWeak or deteriorated bushings
Weak or broken springs
Replace
SERVICE ADJUSTMENT PROCEDURES
REAR WHEEL ALIGNMENT INSPECTIONN17FAAC
The rear suspension assembly must be free of worn, loosen or
damaged parts prior to measurement of rear wheel alignment.
Standard value:
Toe-in (Left-right difference)
Of3 mm (Of.118 in.)
Camber-45’ + 30’
NOTEThe rear wheel alignment is set at the factory and cannot be
adjusted.If toe-in or camber is not within the standard value, replace
bent or damaged parts.
WHEEL BEARING END PLAY ADJUSTMENT,7FBA0
1.Inspect the play of the bearings while the vehicle is jacked
up and resting on floor jack.
2.Remove the hub cap and then release the parking brake.
3. Remove the caliper assembly and the brake disc.
4. Check the bearing’s end play.
Place a dial gauge against the hub surface; then move the
hub in the axial direction and check whether or not there isend play.
Limit: 0.01 mm
(.004 in.) or less
NOTE12AO531If the limit value is exceeded, the lock nut should be
tightened to the specified torque and check the end play
again.
5.Replace the rear hub bearing unit if an adjustment cannot
be made to within the limit.

17-4REAR SUSPENSION - Service Adjustment Procedures
12A0533
3REAR HUB ROTARY-SLIDING
RESISTANCE
(TORQUE) ADJUSTMENTN17FCAC -
1.Inspect the play of the bearings while the vehicle is jacked.
up and resting on floor jack.
2. Release the parking brake.
3. Remove the caliper assembly and the brake disc.
4. After turnina the hub a few times to seat the bearing,
attach a spriig balance to the hub bolt, and, pulling at a 9@angle from the hub bolt, measure to determine whether or
not the rotary-sliding resistance of the rear hub (the
rotary-sliding torque of the rear hub) is the standard value.
Limit:
Rear hub rotary-sliding resistance
31N (7 Ibs.) or less
Rear hub rotary-sliding torque1.8 Nm (1.30
ft.lbs.) or less
NOTEIf the limit value is exceed, loosen the nut and then tighten
it to the specified torque, and check the rear hub
rotary-sliding torque again.
5. Replace the rear hub bearing unit if an adjustment cannot
+.be made to within the limit.
A

REAR SUSPENSION - Rear Suspension Assembly17-5
REAR SUSPENSION ASSEMBLYu
-%. REMOVAL AND INSTALLATIONN17GAA
---i
--..17-26 Nm12-19
ft.lbs.9-14 Nm
7- 10 ft.lbs.
Pre-removal Operationl Removal of the Hole Cover(Refer to GROUP 23-Trims.)
Post-installation Operation@Installation of the Hole Cover
(Refer to GROUP
23-Trims.)l Checking and Adiustment of BrakeDisc De‘ilection ’(Refer to GROUP 5-Service Adjust-ment Procedures.)
l Checking and Adjustment of RearDisc Brake Dragging Torque
(Refer to GROUP &Service Adjust-ment Procedures.)
l Parking Brake Lever Stroke Adjust-ment
(Refer to GROUP 5-Service Adjust-ment Procedures.)
Removal steps
W l1. Rear speed sensor
2. Parking brake cable3. Brake hose and tube bracket
4.
Calioer assemblv
200-280 Nm144-168 ftlbs.
llAO293
40-50 Nm
29-36 ltlbs.80-100
Nm*58-72 ft.lbs.*5. Brake disc
’6.Hubcapl +7. Wheel bearing nut8.Tongued washer9. Rear hub bearing unit
10.Dust shield
4*11. Lateral rod mounting bolt (body side)12.Cap
t:
13. Shock absorber upper mounting nut
14. Trailing arm mounting bolt
4*15. Rear suspension assembly
NOTE(I) Reverse the removal procedures to reinstall.
(2) +e : Refer to “Service Points of Removal”.(31 ~~ : Refer to “Service Points of Installation”.
(4) q : Non-reusable parts
(5)
*: Indicates parts which should be temporarily tight-ened, and then fully tightened with the vehicle Inthe unladen condition.12AO336

17-6REAR SUSPENSION - Rear Suspension AssemblyAxle beam
Drive out
BayArbor
Race
BearingSERVICE POINTS OF REMOVAL
Nl7QBh
1.REMOVAL OF REAR SPEED SENSOR ABS>Refer to GROUP
5-Wheel Speed Sensor.
11. REMOVAL OF LATERAL ROD MOUNTING BOLT
(1) Remove the lateral rod mounting bolt.
(2) Secure and hold the lateral rod to the axle beam with
wire, etc.
13. REMOVAL OF SHOCK ABSORBER UPPER ‘MOUNTINGNUTS/14. TRAILING ARM MOUNTING BOLTS/15
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 jackat the center of the axle beam.
2. Make sure that the jack does not contact the
lateral rod.(2) Remove the shock absorber
m,ounting nuts and trailing
arm mounting bolts.
(3) Lower the jack slowly, and then remove the rear
suspension assembly.
#-
INSPECTIONNl7QCAL
lCheck 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.
lCheck the bushings for cracking, deterioration, or unusual
wear.
BUSHING REPLACEMENTNl)GTAE
TRAILING ARM BUSHING(1) Drive out the trailing arm bushing as shown in the
illustration.
Caution
The bearing within the special tool should be installed,
as shown in the figure, at the race surface nut side of7
the bearing.

-.REAR SUSPENSION
- Rear Suspension Assembly
Press in
BearingChamfered side
12l.0247CROSS SECT. A-A
Wheel, bearing
nut
pindle(2) Press in the bushing into the trailing arm (from
ahechamfered side of the trailing arm).
(3) Be careful that the bushing hole is at the position’ indicatedin the figure and that the difference in bushing projection
distances does not exceed the following value.
: :
Ll -L2= 0 + 1.0 mm (0 * .04 in.)
LATERAL ROD BUSHING (BODY SIDE)(1) Drive out the lateral rod bushing as shown in the figure.
(2) Press in the bushing using the special tool so that the
amount of projection is equal at
the’, left and right. .
NOTEThe replacement of the lateral rod bushing at the axle
beam side is made by the same procedures described in
steps
(1) and (2) above.
SERVICE POINTS OF INSTALLATIONNI’IGDAU
7. INSTALLATION OF WHEEL BEARING NUTAfter tightening the wheel bearing nut, align with the
spindle’s indentation and crimp.
1. INSTALLATION OF REAR SPEED SENSOR ABS>Refer to GROUP
5-Wheel Speed Sensor.

17-8REAR SUSPENSION - Shock Absorber AssemblySHOCK ABSORBER ASSEMBLY
REMOVAL AND INSTALLATIONN17NA-A
Post-installation Operation
Removal steps
1. Cap
::2. Shock absorber upper mounting nut
3. Shock absorber lower mounting bolta*4. Shock.absorber
NOTE(I) Reverse the removal procedures to reinstall.(2) ** : Refer to “Service Points of Removal”.
(3) *: Indicates parts which should be temporarily tight-
ened, and then fully tightened with the vehicle in
the unladen condition.
40-50 Nm29-36 ft.lbs.
12A0530
SERVICE POINTS OF REMOVALNI’INBAA
2. REMOVAL OF SHOCK ABSORBER UPPER MOUNTINGNUT/3. SHOCK ABSORBER LOWER MOUNTING
BOLT/4. SHOCK ABSORBER(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 jackat the center of the axle beam.
2.Be sure that the jack does not contact the lateral
rod..
(2) Remove the shock absorber’s upper mounting nuts andlower mounting bolt, and then remove the shock
absorber.

REAR SUSPENSION - ‘Shock Absorber Asset&y“fg$
DISASSEMBLY AND REASSEMBLYNI’IOM-A
Disassembly steps
+e ~~ ?. Piston rod tightening nut
2. Washer
3. Upper bushing (A)
e+ 4. Bracket assembly
5. Upper spring pad
6. Upper bushing
(B)7. Collarl + 8. Cup assembly
l + 9. Dust cover
10. Bump rubber
l 4 11. Coil spring12. Shock absorber
NOTE(1) Reverse the disassembly procedures to reassemble.(2) +I) : Refer to “Service Points of Disassembly”.(3)~~ : Refer to “Service Points of Reassembly”.(4)q : Non-reusable parts
\@3----612AO328
12Y626
SERVICE POINTS OF DISASSEMBLYNI’IGNAAI
1. REMOVAL OF PISTON ROD TIGHTENING NUT(1) Before removing the piston rod tightening nut,
compress the coil spring using the special tools.
CautionDo 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.
INSPECTION
Nl?GOAAll Check the rubber parts for damage.
lCheck the coil springs for crack, damage or deterioration.

L
)il spri
12A0049
REAR SUSPENSION - Shock Absorber Assembly
SERVICE POINTS OF REASSEMBLYNl7QPA2
11. INSTALLATION OF COIL SPRING(1) Use the special tool
(L-4514) to compress the coil ,“3”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.
Cup assembly
1
Dd cover
IBracket assembly
1 Shock absorber lower bushing12R01409. INSTALLATION OF DUST
COVEW8. CUP ASSEMBLY
As shown in the illustration, fit the dust cover to the cup
assembly.
4. INSTALLATION OF BRACKET ASSEMBLY/l. PISTON
ROD TIGHTENING NUT(1) With the position of the bracket assembly as shown in
the figure, tighten the tightening nut to the specified*c,
torque.
(2)Install the coil spring so that the lower edge fits into thespring seat groove and the upper edge fits into the
spring pad groove, then remove the special tool
(L-4514).