1991 MITSUBISHI 3000GT Service Manual

SERVICE BRAKES - Service Adjustment Procedures35-6316R067C
16R06703. Check continuity of the relays both when they are ener-
gized and de-energized.
Motor Relay
When de-energizedBetween
termrnals @30-600and@When energized
between terminals
@and@Between
termrnals @
and @
Between terminals @
and @No contrnurty(mmContinuity
(approx.
ORI
vVhen de-energizedBetween terminals @60-120~~and QBetween terminals @
and
@IContinuity
(approx. On)Between terminals @
and @
flo;rntinuityccWhen energizedBetween terminals @and
oetween terminals@
yo;;ntinuityco
@and@Between terminals @ andContrnuity@(approx. OR
1 TSB Revision

35-64SERVICE BRAKES - Brake Pedal
BRAKE PEDAL
REMOVAL AND INSTALLATIONM35GA-
-

Post-installation Operationl Installation of Steering Column
Assembly
(Refer to GROUP
37A-SteeringWheel and Shaft.)l Clutch Pedal Adjustment
(Refer to GROUP 21 -Clutch Pedal.)
l Brake Pedal Adjustment
(Refer to
P.3545.)
Stop light switch removal steps
I. Stop light switch connector
2. Stop light switch
Brake pedal removal steps
I)* 3. Return spring
4. Cotter pin
5. Washer
6. Clevis pin
9. Brake pedal assembly
(parts from step
10 to step 21)10. Brake pedal shaft bolt
13. Brake pedal
14. Bushing
15. Spacer
l * l * 20. Clutch pedal (Refer to Group 2
Pedal.)1 -Clutch
21. Brake pedal support member
30 Nmftlbs.
’ 12Nm9 ft.lbs.
c-iA.14
14FO10614
l?
14AO2564 5
%
,36il4”OOS,
. .
I
I~
d
I
I
I
I
I~11~
d,
TSB Revision

SERVICE BRAKES - Brake Pedal35-65
‘Ii14 Nm
i3Nmy9 ftlbs.
6
h 14FOlO8. .22ttJbs.
--2
-.113Nm14 Nm
9 ft.lbs.
10 klbs.
Stop light switch removal steps1. Stop light switch connector
2. Stop light switch
Brake pedal removal steps
l *3. Return spring
4. Cotter pin
5. Washer\12 Nlm9 ftllbs.6. Clevis pin
7. Cotter pin
8. Shift lock cable connection
9. Brake pedal assembly (parts from step
10 to
step 21)
/’/’10.
11.
12.13.
14.
15.
16.
17.
18.
19.
21.Brake pedal shaft bolt
Lever assembly installation nut
Lever assembly
Brake assembly
Bushing
Spacer
Cotter pin
Link assembly
Lever assemblyBushinq
Brake pedal support member
/
14FO107
TSB Revision

35-66SERVICE BRAKES - Brake Pedal
14LO142No continuity Continuity
4mm
(.I6 in.)14LO171
:Vehicles with cruise control>a
b14LO17C
Brake pedal
14FOO76
INSPECTIONM35GCANl Check the bushing for wear.
l Check the brake pedal for bend or twisting.
l Check the brake pedal return spring for damage.
‘LJ)STOP LIGHT SWITCH
(I) Connect a circuit tester to the stop light switch.
(2) The
stolj light
switch is in good condition if there is no
continuity when the plunger is pushed in to a depth of
within 4 mm
(.16 in.) from the outer case edge surface, and
if there is continuity when it is released.
For vehicles with the cruise control system, the check for
continuity should be made at connectors “a” and “b” of the
stop light switch.
SERVICE POINT OF INSTALLATIONM35GDBG3. INSTALLATION OF RETURN SPRING
Install the return spring with the shorter hook on the brake
pedal.
TSB Revision

Brake tube flare nut15Nm
11 ft.lbs.
m14FO38

Post-installation Operationl Supplying Brake Fluid
l-----l
l Bleeding(Refer to P.35-48.)l Adjustment of Brake Pedal
(Refer to P.35-45.)

81
‘414ux216 1
Sealant: 3M ATDPart No.
-----I8663 or equivalent
SERVICE BRAKES - Master Cylinder and Brake Booster35-67
MASTER CYLINDER AND BRAKE BOOSTER
L
REMOVAL AND INSTALLATION
14 NmIO ft.lbs.
10 Nm
7 ft.lbs.
Master cylinder removal steps
*I)1. Low-pressure hose
2. Brake fluid level sensor connector
3: Brake tube connection
4. Master cylinder
l e .Adjustment of clearance between brake
booster push rod and primary piston
Brake booster removal steps
4.Master cylinder5.Vacuum hose6.Vacuum tubel a7. Vacuum hose with check valve8.Fitting9.Cotter pin10.Washer11.Clevis pin.
12.Sealer13.Spacer
14.Brake booster
lb14FOlll
9 10
bpr.
m
cl11
1 t
TSB Revision

35-68
SERVICE BRAKES - Master Cvlinder and Brake Booster
Vacuum hosemm (in.
Brake booster
20
- 23 t.79 - .9114A039i
SERVICE POINT OF REMOVALM35lBAK1. MOVING LOW-PRESSURE HOSE
Remove the nuts and bolts securing low-pressure hose
shown in the illustration, and using a wire, suspend the
hose from the hood to a position where it does not hamper
the removal and installation of the brake booster.
Caution
Move the hose slowly with care not to bend it.
SERVICE POINTS OF INSTALLATIONM35lDAUVALVE
(1) In the case of AWD, insert the vacuum hose of the
not to allow it to contact the check valve. Then, secure
the hose with hose clip.
connected until it contacts the hexagonal edge of the
fitting, and then should be secured by the hose clip.
If the check valve is defective, replace the vacuum
hose.BOOSTER PUSH ROD AND PRIMARY PISTON
Adjust the clearance (A) between the brake booster push
(I) Measure the dimension (B) between the master cylin-
der end face and piston.
NOTETo obtain
(B), first take measurement with a square
placed on the master cylinder end face. Then, subtract
the thickness of the square to arrive at (B).
(2) Obtain the dimension
(C) between the brake booster
mounting surface on the master cylinder and the end
face.
TSB Revision

SERVICE BRAKES - Master Cylinder and Brake Booster35-69light
scale14AO471
DISASSEMBLY AND REASSEMBLY
Brake fluid: Conforming to DOT3
Disassembly steps
1. Reservoir cap assembly
2. Diaphragm
3. Reservoir cap4. Filter
5. Brake fluid level sensor
6. Float7. Reservoir stopper bolt
8. Reservoir
9. Reservoir seal
*I)IO. Piston stopper bolt
11. Gasket
a*12. Piston stopper ring
13. Primary piston assembly
a*14. Secondary piston assembly
15. Master cylinder body(3) Measure the dimension
(D)der mounting surface on brake booster and the push
rod end.
NOTETo obtain
(D), first take measurement with a square
placed on the brake booster. Then, subtract the thick-
(D).
(3),push rod and primary piston.
Standard value: A (A
=- C - D)
7
+ 8 inch brake booster
0.55
- 0.75 mm (.022 - .030 in.)
8
+ 9 inch brake booster
0.65
- 0.85 mm (.026 - .033 in.)
(5) If the clearance is not within the standard value range,
adjust by changing the push rod length by turning the
adjustable end of the push rod.
Caution
Improper clearance may cause excessive brake
drag.M35HA-
-
14FOll3
Do not disassemble the primary ancH secondary
piston assembly.
1 TSB’ Revision

35-70SERVICE BRAKES - Master Cylinder and Brake Booster
SERVICE POINTS OF DISASSEMBLYMBSHBAF10. DISASSEMBLY OF PISTON STOPPER BOLT
Remove the piston stopper bolt, while depressing the
piston.
12. DISASSEMBLY OF PISTON STOPPER RING
Remove the piston stopper ring, while depressing the
piston.
14. DISASSEMBLY OF SECONDARY PISTON ASSEMBLY
NOTEIf it is hard to remove the secondary piston from the
cylinder, gradually apply compressed air from the outlet
port on the secondary end of the master cylinder.
INSPECTIONM35HDAF
lCheck the inner surface of master cylinder body for rust or
pitting.
lCheck the primary and secondary pistons for rust, scoring,
wear, damage or wear.
l Check the diaphragm for cracks and wear.
‘.‘d I
TSB Revision