1991 MITSUBISHI 3000GT brake

34-24REAR SUSPENSION - Rear Suspension Assembly
REAR SUSPENSION ASSEMBLY
REMOVAL AND INSTALLATION
M34GA-B
L
Rel
145 Nm9- 33 ftlbs.
1. Shock absorber mounting nuts (upper)*
2. ECS connector
*Pre-removal Operationl Removal of the Rear Side Trim Absorber Lid
(RefertoGROUP52A-Trims.)l Removal of the Center Exhaust Pipe and Main Muffler
(Refer to GROUP 15
- Exhaust Pipe and Main Muffler.)
5. Brake caliper*
1,50-60NmI36 - 43 ft.lbs.35 Nm
$8 Nm“?C,ILc. ashwez I,..“=.BP’----12Nm9 ftlbs.
15..e12FO1088. Pressure tube assembly to pipe assembly
connection
<4WS>9. Feed pipe assembly to suction hose connec-
tion
<4WS>10. Return pipe assembly to rubber hose con-
nection t4WS>11. Power cylinder tie rod coupling nut <4WS>*12. Differential carrier to propeller shaft coupling
bolt and nut
Post-installation Operationl installation of the Center Exhaust Pipe and Main Muffler
(Refer to GROUP 15
- Exhaust Pioe and Main Muffler.)
l Installation of the Rear Side Trim Absorber Lid
(Refer to GROUP
52A-Trims.)13. Center bearing mounting nut
14. Harness connector connection
CABS>*15. Parking brake cable and ABS sensor fixingl Refilling and Bleeding of the Power Steering System
(Refer to GROUP
37A- Service AdjustmentProcedures.)bolt
*16. Cable band*
17. Crossmember bracket*
18. Crossmember mounting nut (on differential
side)”19. Rear suspension assemblyl Checking Wheel Alignment
(Refer to P.34-23.)
l Bleeding of 4WS System
(Refer to GROUP 37B
- Service Adjustment
Procedures.)
l Operation Inspection of the 4WS System
(Refer to GROUP 37B - Service AdiustmentProcedures.)
NOTEParts marked with * are symmetrical.
,* Checking the Parking Brake Lever Stroke
(Refer to GROUP 36 -Service Adjustment
Procedures.)i
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34-30REAR SUSPENSION - Trailing Arm
TRAILING ARMM34TA-B1
REMOVAL AND INSTALLATIONN/A
$icJ
14 ft.lbs.T/C vehicles26-30Nm
50-60Nm936 - 43 ftlbs.\19 - 22 ft.lbs.
55-65Nm40 - 47ft.lbs.
200
- 240 Nm*145- 174ft.lbs.* I
P100 Nm
72 ft.lbs.
58 Nm’ <842 ft.lbs.Removal steps
*I)
*I)
+*+*
1. Rear brake caliper assembly
2. Rear brake disc
3. Drive shaft to companion flange mounting
bolt and nut
4. Self-locking nut
5. Companion flange
6. Rear axle shaft
7. Parking brake cable end
8. Parking brake cable clamp bolt
9. Rear speed sensor
(ABS)IO. Rear speed sensor cable and parking brake
cable bands (ABS)II. Dust shield
12. Self-locking nut (upper arm)
13. Self-locking nut (lower arm)
14. Tie rod end mounting
nut15. Trailing arm mounting bolt and nut
16. Rear shock absorber mounting bolt
17. Trailing arm
NOTEFor tightening points marked with *, first temporarily tighten
and then ground the vehicle to torque to specification where the
vehicle is empty.‘7
il 6’
12FOO89
Post-installation Operationl Check of Wheel Alignment
(Refer to P.34-23)l Check of Parking Brake Lever Stroke(Refer to GROUP 36 - Service Adiustment
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34-34REAR SUSPENSION - Stabilizer Bar
STABILIZER BAR
REMOVAL AND INSTALLATION
100 Nm72 ft.lbs.
42 Nm4
30 ft.lbs._
/IIO-130Nm80 - 94 ftlbs.
70-85 Nm51- 61 ftlbs.
Removal steps
l *1. Self-locking nut*l a2. Self-locking nut*
3. Joint cup A*
4. Stabilizer rubber*
5. Joint cup
B”I)* 6. Stabilizer link*
7. Joint cup A*
8. Stabilizer rubber*
9. Tie rod end mounting nut*
IO. Parking brake cable bracket mounting bolt”11. 4WS prping fixing bolt <4WS>12. Rear shock absorber mounting bolt
13. Power cylinder mounting bolt
<4WS>14. Crossmember bracket*
15. Crossmember mounting nut*
16. Stabilizer bracket*
17. Bushing*
18. Stabilizer bar
NOTEParts marked with * are symmetrical12L0217
Nm.Ibs.
M341A.B12A0113
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L,
SERVICE
BRAKES
CONTENTSM35AA..
ANTI-LOCK BRAKING SYSTEM TROUBLESHOOTING7Actuator Test Function
. . . . ..___..._____.__................................ I 2, 36Check Using Self Diagnosis Function __._.....,_._.._____........ 11, 28
Diagnosis Code Chart ..,,........,......_..................................,. 1 I, 28
How to Use the Troubleshooting Flow Chart
_____.___......._._.7Method of Clearing Diagnosis Code Memory._.,._...... 12, 30
Particular Phenomena of the Anti-lock Braking System
7Troubleshooting (ABS-AWD) ._______._.._...........................,... 26
Troubleshooting (ABS-FWD) ______.._._........_...........,.....,.....,....8
TroubleshootingMethods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
BRAKE LINE . . . . . . .._.......................................................................71
BRAKEPEDAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
ELECTRONIC CONTROL UNIT (ABS). . . . .._._..___..__._............93/
L
FRONT DISC BRAKE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73G SENSOR (AWD-ABS)’
____.____.___.__._._.................,,......,.....,.... 92
HYDRAULIC UNIT (ABS) .___.._._._._.______.............,...,,..........~ .,_____86
MASTER CYLINDER AND BRAKE BOOSTER ..__.._____.._____67SPECIFICATIONS ._....._.___.....................................
REAR DISC BRAKE . . . . . . .._..._._.___................................................81
SERVICE ADJUSTMENT PROCEDURES..___........45Bleeding48
Brake Booster Operating Inspection.
46
Brake Drum Inside Diameter Check. . .56
BrakeFluidLevelSensor Check.46
Brake Lining and Brake Drum Connection Check56Brake
Linrng Thickness Check............................................Brake Pedal Inspection and Adjustment............................Check Valve Operation Check............................................Front Brake Disc Run-out Check........................................Front Brake Disc Run-out Correction................................Front Disc Brake Pad Check and Replacement................Inspection of Front Brake Disc Thickness........................Inspection of Hydraulic Unit................................................Inspectton of Power Relay....................................................Inspection of Valve Relay and Motor Relay (ABS)............Measurement of Wheel Speed Sensor Output Voltage
Proportioning Valve Function Test
....................................Rear Brake Disc Run-out Check........................................Rear Brake Disc Run-out Correction................................Rear Brake Disc Thickness Check....................................Rear Disc Brake Pad Check and Replacement................Remedy in Case of DischargedBattery............................56
45
46
52
53
48
5258
62
62
57
47
55
55
55
53
62
SPECIAL TOOLS ..__.......___..........................................................General Specifications
........................................................Lubricants............................................................................Sealants and Adhesives........................................................Service Specifications........................................................3
TROUBLESHOOTING............................................................5
WHEEL SPEED SENSOR (ABS)............................................88
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(1)A Supplemental Restraint System (SRS), which uses a driver-side air bag, has been installed in the 3000GT.(2)The SRS includes the following components: impact sensors, SRS diagnosis unit: SRS warning light, air bagmodule, clock spring, interconnecting wiring. Other SRS-related components (that may have to be
removed/installed in connection with SRS service or maintenance) are indicated in the table of contents byan asterisk (*).
WARNING!(1)Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to
personal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (fromrendering the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at anauthorized MITSUBISHI dealer.
(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B
-Supplemental Restraint System (SRS), before beginning any service or maintenance of any component of theSRS or any SRS-related component.
i

35-2SERVICE BRAKES - Specifications
SPECIFICATIONSrvKwx.- -
GENERAL SPECIFICATIONSItems
FWDAWD
Master cylinderTypeTandem type
(with level sensor)Tandem type
(with level sensor)
I.D. mm (in.)
25.4
(1) or 26.9 (1 %s)*26.9 (1 '/l6)Brake boosterTypeVacuum type, tandemVacuum type, tandem
Effective dia. of power cylinder
mm (in.)
180 (7.0) + 205 (8.0) or203 (8.0) + 230 (9.0)
203 (8.0) + 230 (9.0)”
Boosting ratio
6.0 [at 247 N (54
Ibs.)] or7.0
[Brake pedal depressing force]
7.0 [at 261 N (58 Ibs.)]”[at 261 N (58 Ibs.)]Proportioning valve
Split point
MPa (psi)3.75 - 4.25 (533 - 604)3.75 - 4.25 (533 - 604)
Decompression ratio
0.370.37
Front brakesTypeFloating caliper, 2-piston,Rigid caliper, 4-piston,
ventilated disc (M-R57W)ventilated disc
(M-R66Z)Disc effective dia.mm (in.)
227
(9.0)249 (9.8)Disc thickness
mm (in.)24
(.94)30 (1.18)
Pad thicknessmm (in.)
16 (.63)15 l.59)
Wheel cylinder I.D.mm (in.)
42.8(1"/16)X240.4(1'g/32)x2 +42.8(1"/16)~2
Clearance adjustment
AutomaticAutomatic
Rear brakesTypeFloating caliper, l-piston,
ventilated disc
(M-R45V)Floating caliper, 1 -piston,
ventilated disc (M-R58V)Disc effective dia.mm (in.)
228
(9.0)237 (9.4)Disc thicknessmm (in.)
18 (.71)20 (.79)Pad thickness
mm (in.)15.5
(.61)15.5 (.61)Wheel cylinder I.D.mm (in.)
34.9 (13/8)38.1 (1%)
Clearance adjustmentAutomaticAutomatic
Rotor teeth
Front wheel side
4747Rear wheel side
4747Speed sensor
Magnet coil typeMagnet coil type
NOTE*:ABS
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SERVICE BRAKES - Specifications
SERVICE SPECIFICATIONS
3msFWDAWD
andard value
Brake pedal heightmm (in.)
177 - 182 (7.0 - 7.2)
177 - 182 (7.0 - 7.2)Brake pedal free playmm (in.)
3-8(.1 -.3)3-8(.1 -.3)Brake pedal to floorboard clearance
mm (in.)
80 (3.1) or more
80 (3.1) or more
Pad thicknessmm (in.)
10.0 (.39)10.0 (.39)Front disc thickness
mm (in.)
24.0
t.94)30.0 (1.18)
Rear disc thickness
mm (in.)
18.0 (71)
20.0 (.79)Proportioning valve pressure
MPa (psi)
Split point
3.75 - 4.25 (533 - 604)3.75 - 4.25 (533 - 604)
Output pressure [input pressure]
5.23 - 5.73 (744 - 815)f8.0 (I, 138)]5.23 - 5.73 (744- 815)18.0 (1,138)]Booster
push;; (To,,;?aster cylinder piston
clearance
7
+ 8 inch brake booster
0.55 - 0.75 (.022 - ,030)-8 + 9 inch brake booster
0.65
- 0.85 (.026 - ,033)0.65 - 0.85 (026 - ,033)Disc brake drag force (tangential force of
wheel mounting bolts)
N (Ibs.)70 (15.4) or less
70 (15.4) or less
[Disc brake dragging torque[Nm (ft.lbs.)]
[4 (3) or less][4 (3) or less]
Speed sensor’s (ABS) internal resistance
kQFront
1.4-2.2
0.8 - 1.2
Rear1.3-2.1
0.8- 1.2
Rear speed sensor pole piece-to-rotor
tooth surface clearancemm (in.)
-28.15-28.45(1.11 -1.12)
Clearance between the
spmefm;l[yle piece
and the toothed rotor
Front0.3 - 0.9 (.012 - ,035)-
Rear0.2 - 0.7 (008 - .028)-nit
Left/right proportioning valve output
pressure difference
MPa (psi)0.4 (57)
0.4 (57)Front disc run-outmm (in.)
0.1
(.004) or less
0.1 (.004) or less
Pad thicknessmm (in.)
2.0
(08)2.0 (08)Front disc thicknessmm (in.)
22.4
(.88)28.4 (1.12)Front hub end playmm (in.)
0.05
(.002)0.05 (.002)Rear disc thicknessmm (in.)
16.4
(65)18.4 (.72)Rear disc run-outmm (in.)
0.08
(0031) or less
0.08 (.0031) or less
Rear hub end playmm (in.)
0.05
(002)0.8 (.031)
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35-4LUBRICANTSItems
Brake fluid
SERVICE BRAKES - Specifications / Special ToolsSpecified lubricant
Conforming to DOT3
M3!3xh~
dInside of shim A and shim B, or inside of inner shim A,
inner shim B, and outer shimBrake grease SAE J310,
NLGI No.1Guide pin and lock pin sliding part
Piston boot inner surface
Pin boot inner surfaceRepair kit grease
SEALANTS AND ADHESIVESM3S.X..
Items
Thread part fittingSpecified sealant
3M ATD Part No.8663 or equivalent
SPECIAL TOOLSM35DA- _MB991 359
MB991 377Adapter harness
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SERVICE BRAKES - Special Tools / TroubleshootingTROUBLESHOOTING
MJSEAASSymptomProbable cause
Remedy
Vehicle pulls to oneGrease or oil on pad or lining surface
Replace
side when brakes are
appliedInadequate contact of pad
Correct
Auto adjuster malfunction
Adjust
Insufficient brakingLow or deteriorated brake fluidAdd or refill
power
Air in brakesystemBleed air
Overheated brake rotor due to dragging of padCorrect
Grease or oil on pad surfaceReplace
Inadequate contact of padCorrect
Brake booster malfunctionCorrect
Auto adjuster malfunctionAdjust
Clogged brake lineCorrect
Proportioning valve malfunctionReplace
Increased pedal strokeAir in brake systemBleed air
(Reduced pedal to
floorboard clearance)Worn padReplace
Broken vacuum hoseReplace
Brake fluid leaksCorrect
Excessive push rod to master cylinder clearanceAdjust
Faulty master cylinderReplace
Brake dragWorn brake pedal return springReplace
Insufficient push rod to master cylinder clearanceAdjust
Defective master cylinder piston return springReplace
Clogged master cylinder return portCorrect
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