2005 MITSUBISHI 380 brake

CLUTCH CONTROL
CLUTCH21A-5
CLUTCH CONTROL
REMOVAL AND INSTALLATIONM1211001900255
Pre-removal Operation
Clutch Fluid DrainingPost-installation Operation
Clutch Fluid Supplying
Clutch Line Bleeding (Refer to P.21A-3).
Clutch Pedal Adjustment (Refer to P.21A-2).
Clutch master cylinder removal
steps
1. Reservoir hose and brake fluid
reservoir connection
2. Clutch damper
<> >>A<<3. Clutch pipe assembly
Brake master cylinder assembly
and brake booster (Refer to
GROUP 35A, Master cylinder
assembly and brake booster
35A-26.)
4. Clevis pin5. Clutch master cylinder
6. Sealer
7. Reservoir hose
Clutch release cylinder removal
steps<> >>A<<8.Clutch tube assembly
9.Clutch release cylinder
Clutch line removal steps
<> >>A<<10.Clutch hose bracket
<> >>A<<11. Clutch hoseClutch master cylinder removal
steps (Continued)

35-1
GROUP 35
SERVICE BRAKES
CONTENTS
BASIC BRAKE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35A
ANTI-LOCK BRAKING SYSTEM (ABS). . . . . . . . . . . . . . . . . . .35B

35A-1
GROUP 35A
BASIC BRAKE
SYSTEM
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .35A-2
BASIC BRAKE SYSTEM DIAGNOSIS35A-3
INTRODUCTION TO BASIC BRAKE
SYSTEM DIAGNOSIS . . . . . . . . . . . . . . . . 35A-3
BASIC BRAKE SYSTEM DIAGNOSTIC
TROUBLESHOOTING STRATEGY . . . . . . 35A-3
SYMPTOM CHART. . . . . . . . . . . . . . . . . . . 35A-3
SYMPTOM PROCEDURES . . . . . . . . . . . . 35A-3
SPECIAL TOOLS . . . . . . . . . . . . . . . .35A-12
ON-VEHICLE SERVICE . . . . . . . . . . .35A-13
BRAKE PEDAL CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 35A-13
BRAKE BOOSTER OPERATING TEST . . . 35A-14
CHECK VALVE OPERATION CHECK . . . . 35A-15
BLEEDING . . . . . . . . . . . . . . . . . . . . . . . . . 35A-16
BRAKE FLUID LEVEL SENSOR CHECK. . 35A-17
DISC BRAKE PAD CHECK AND
REPLACEMENT . . . . . . . . . . . . . . . . . . . . . 35A-17
DISC BRAKE ROTOR CHECK . . . . . . . . . . 35A-19
MASTER CYLINDER FUNCTION CHECK . 35A-23
BRAKE PEDAL. . . . . . . . . . . . . . . . . .35A-24
REMOVAL AND INSTALLATION . . . . . . . . 35A-24
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 35A-25
MASTER CYLINDER ASSEMBLY
AND BRAKE BOOSTER . . . . . . . . . .35A-26
REMOVAL AND INSTALLATION . . . . . . . . 35A-26
MASTER CYLINDER . . . . . . . . . . . . . . . . . 35A-28
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 35A-29
DISC BRAKE ASSEMBLY . . . . . . . . .35A-30
REMOVAL AND INSTALLATION . . . . . . . . 35A-30
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 35A-32
DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . 35A-33
DISASSEMBLY AND ASSEMBLY 35A-36
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 35A-38
SPECIFICATIONS . . . . . . . . . . . . . . .35A-40
FASTENER TIGHTENING
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . 35A-40
GENERAL SPECIFICATIONS . . . . . . . . . . 35A-40
SERVICE SPECIFICATIONS . . . . . . . . . . . 35A-41
LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . . 35A-41

GENERAL DESCRIPTION
BASIC BRAKE SYSTEM35A-2
GENERAL DESCRIPTIONM1351000100440
The brake system has been designed to give greater
reliability and durability and to provide excellent brak-
ing performance.
FEATURES
.
Improved braking performance
1. An 8+9 inch tandem brake booster provides suffi-
cient braking force in sudden braking range.
2. 296mm front ventilated disc brakes provide sta-
ble braking force and improved braking feel.
3. 303mm rear ventillated disc brakes are used.
.
Improved stability
1. A 4-wheel anti-lock braking system (4ABS) pre-
vents slipping caused by the vehicle wheels lock-
ing up, in order to maintain a stable vehicle
posture and steering performance.
2. An electronic brake-force distribution (EBD)
makes it possible to maintain the maximum
amount of braking force even when the vehicle's
load is unevenly distributed. 3. Front- and rear-wheel X-type brake line layout
are used.
4. Ventilated discs brakes improve anti-fading per-
formance.
.
Improved serviceability
1. A diagnosis function for the ABS system makes
inspection easier.
2. An outer disc separated hub and rotor make
removal and installation easier.
3. The master cylinder reservoir is utilised for both
brake and clutch fluid on manual transmission
vehicles.
4. The master cylinder filter is coloured black for
improved viewing.
5. The ABS-ECU and hydraulic unit are integrated
to make them more compact and light weight.
CONSTRUCTION DIAGRAM

BASIC BRAKE SYSTEM DIAGNOSIS
BASIC BRAKE SYSTEM35A-3
BASIC BRAKE SYSTEM DIAGNOSIS
INTRODUCTION TO BASIC BRAKE SYSTEM DIAGNOSISM1351009700319
Hydraulic brakes are composed of the brake pedal,
master cylinder, brake booster and disc brakes. Mal-
functions such as insufficient braking power or the
generation of noise may occur due to wear, damage
or incorrect adjustment of these components.
BASIC BRAKE SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGYM1351009800316
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you
have exhausted most of the possible ways to find a
basic brake system fault.
1. Gather information from the customer.2. Verify that the condition described by the
customer exists.
3. Find the malfunction by following the symptom
chart.
4. Verify malfunction is eliminated.
SYMPTOM CHARTM1351009900324
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Vehicle Pulls to One Side when Brakes are Applied
.DIAGNOSIS
STEP 1. Check for oil, water, etc., on the pad
contact surface of all brakes.
Q: Is oil, water, etc., on the pad contact surface?
YES :
Replace the part and determine the
source/cause of foreign material. Then go to
St e p 5.
NO : Go to Step 2. SYMPTOM INSPECTION
PROCEDUREREFERENCE
PA G E
Vehicle pulls to one side when brakes are applied 1
P.35A-3
Insufficient braking power 2
P.35A-4
Increased pedal stroke (Reduced pedal-to-floor board clearance)3
P.35A-5
Brake drag 4
P.35A-6
Scraping or grinding noise when brake are applied 5
P.35A-7
Squealing, groaning or chattering noise when brake are applied 6
P.35A-8
Squealing noise when brakes are not applied 7
P.35A-9
Groaning, clicking or rattling noise when brakes are not applied8
P.35A-11

BASIC BRAKE SYSTEM DIAGNOSIS
BASIC BRAKE SYSTEM35A-4
STEP 2. Check disc brake pistons for smooth
operation.
(1) With engine not running, depress the brake pedal
rapidly several times to deplete booster vacuum
reserves.
(2) Test each disc brake assembly one at a time.
a. Remove the lower caliper bolt, then remove
caliper from mount.
b. Have an assistant slowly depress the brake
pedal. Confirm piston(s) extend slowly and
smoothly with no jumpiness. Repeat for each
disc brake assembly.
Q: Do (does) the piston(s) move correctly?
YES :
Go to Step 3.
NO : Disassemble and inspect the brake
assembly (Front: refer to P.35A-33, Rear:
refer to P.35A-36). Then go to Step 5.
STEP 3. Check brake disc(s) for runout.
Refer to P.35A-19.
Q: Is runout outside of specifications?
YES :
Repair or replace the brake disc(s) as
necessary. Then go to Step 5.
NO : Go to Step 4.
STEP 4. Check brake discs for correct thickness.
Refer to P.35A-19.
Q: Is the thickness outside of specifications?
YES :
Repair or replace the brake disc(s) as
necessary. Then go to Step 5.
NO : Perform the brake line bleeding. Then go to
St e p 5.
STEP 5. Retest the system.
Q: Is the symptom eliminated?
YES :
The procedure is complete.
NO : Start over at Step 1. If a new symptom
appears, refer to the appropriate symptom
chart.
INSPECTION PROCEDURE 2: Insufficient Braking Power
.
DIAGNOSIS
STEP 1. Check that the specified brake fluid is
used, its level is correct, and no contamination is
found.
Q: Is there a fault?
YES :
Refill or replace with the specified brake
fluid DOT 3 or DOT 4. Bleed the brakes if
necessary (Refer to P.35A-16). Then go to
Step 7.
NO : Go to Step 2.
STEP 2. Check for spongy (not firm) brakes.
(1) With engine not running, depress the brake pedal
rapidly several times to deplete the booster
vacuum reserve.
(2) With the brake pedal fully released, depress the
brake pedal slowly until it stops.
(3) With a measuring device (ruler, etc.) next to the
brake pedal, depress the pedal firmly and
measure the distance the pedal traveled.
Q: Is the distance greater than 20 mm (0.8 inch)?
YES :
Bleed the brakes to remove air in the fluid
(Refer to P.35A-16). Then go to Step 7.
NO : Go to Step 3.
STEP 3. Check the brake booster function.
Refer to P.35A-14.
Q: Is there a fault?
YES :
Replace the brake booster. Then go to Step
7.
NO : Go to Step 4.

BASIC BRAKE SYSTEM DIAGNOSIS
BASIC BRAKE SYSTEM35A-5
STEP 4. Check for pinched or restricted brake
tube or hose.
Q: Is there a pinched or restricted brake tube or hose?
YES :
Replace that complete section of brake tube
or brake hose. Then go to Step 7.
NO : Go to Step 5.
STEP 5. Check for oil, water, etc., on the pad
contact surfaces of all brakes.
Q: Is oil, water, etc., on the pad contact surface?
YES :
Replace the part and determine the
source/cause of foreign material. Recheck
symptom. Then go to Step 7.
NO : The procedure is complete. If condition
persists for vehicles without ABS, go to Step
6.
STEP 7. Recheck symptom.
Q: Is the symptom eliminated?
YES :
The procedure is complete.
NO : Start over at step 1. If a new symptom
surfaces, refer to the appropriate symptom
chart.
INSPECTION PROCEDURE 3: Increased Pedal Stroke (Reduced Pedal-to-Floor Board Clearance)
.
DIAGNOSIS
STEP 1. Check for spongy (not firm) brakes.
(1) With engine not running, depress the brake pedal
rapidly several times to deplete booster vacuum
reserve.
(2) With the brake pedal fully released, depress the
brake pedal slowly until it stops.
(3) With a measuring device (ruler, etc.) next to the
brake pedal, depress the pedal firmly and
measure the distance the pedal traveled.
Q: Is the distance greater than 20 mm (0.8 inch)?
YES :
Bleed the brakes to remove air in the fluid
(Refer to P.35A-16). Then go to Step 7.
NO : Go to Step 2.
STEP 2. Check the pad for wear.
Refer to P.35A-17.
Q: Is the pad thickness outside of specifications?
YES :
Replace the part. Then go to Step 7.
NO : Go to Step 3.
STEP 3. Check the vacuum hose and check valve
for damage.
Refer to P.35A-15.
Q: Is there a damage?
YES :
Replace the part. Then go to Step 7.
NO : Go to Step 4.
STEP 4. Check the master cylinder function.
Refer to P.35A-23.
Q: Is there a fault?
YES :
Repair it. Then go to Step 7.
NO : Go to Step 5.
STEP 5. Check for brake fluid leaks.
Q: Is there a leak?
YES :
Check the connection for looseness,
corrosion, etc. Clean and repair as
necessary. If leaking in any tube or hose
section, replace the complete tube or hose.
Then go to Step 7 .
NO : Go to Step 6.
STEP 6. Check for excessive clearance between
the push rod and primary piston.
Refer to P.35A-26.
Q: Is the clearance outside of specifications?
YES :
Adjust the clearance. Then go to Step 7.
NO : Go to Step 7.
STEP 7. Recheck symptom.
Q: Is the symptom eliminated?
YES :
The procedure is complete.
NO : Start over at step 1. If a new symptom
surfaces, refer to the symptom chart.

BASIC BRAKE SYSTEM DIAGNOSIS
BASIC BRAKE SYSTEM35A-6
INSPECTION PROCEDURE 4: Brake Drag
.
DIAGNOSIS
STEP 1. Check the parking brake operating lever return.
Q: Is the operation faulty?
YES : Repair it. Then go to Step 9.
NO : Go to Step 2.
STEP 2. Check the brake shoe springs for breakage.
Q: Are the brake shoe springs broken?
YES : Replace the spring. Then go to Step 9.
NO : Go to Step 3.
STEP 3. Check the amount of grease at each sliding
section.
Refer to GROUP 36, Parking Brake Lining and Drum P.36-8.
Q: Is the grease amount low?
YES : Apply grease. Then go to Step 9.
NO : Go to Step 4.
STEP 4. Check the parking brake pull amount.
Refer to GROUP 36, On-vehicle Service
Parking Brake lever
Stroke Check and Adjustment P.36-3.
Q: Is there a fault?
YES : Adjust it. Then go to Step 9.
NO : Go to Step 5.
STEP 5. Check for insufficient clearance between the push
rod and primary piston.
Refer to P.35A-26.
Q: Is there a fault?
YES : Adjust the clearance. Then go to Step 9.
NO : Go to Step 6.