Power Brake Unit; Power Brake Unit Inspection - Mazda 6 2002 Workshop Manual

POWER BRAKE UNIT REMOVAL/INSTALLATION
1. Remove the master cylinder. (See
2. Remove the wiper arm. (See
3. Remove the cowl grille. (See
4. Remove the wiper motor. (See
5. Remove the cowl panel. (See
6. For L.H.D., remove the A/C bracket.
7. For L.H.D., remove the ABS/TCS HU/CM or DSC HU/CM . (See
INSTALLATION.) (See
8. For R.H.D., remove the alternator cover.
9. For R.H.D., remove the insulator.
10. For R.H.D., remove the vacuum pipe bracket.
11. Remove in the order indicated in the table.
1 Vacuum hose
2 Snap pin
3 Clevis pin
4 Nut
5 Fork
6

Power brake unit

7 Gasket
8 Nut
12. Install in the reverse order of removal.
End Of Sie

POWER BRAKE UNIT INSPECTION

Warning
• • • • The following inspection methods are the simple inspection methods to judge the function of
power brake.
• • • • If there is malfunction in power brake unit, replace the power brake unit as a component.
Power Brake Unit Function Check (Simple Method)
Step 1
1. With the engine stopped, depress the pedal a few times.
2. With the pedal depressed, start the engine.
3. If the pedal moves down slightly immediately after the engine starts, the unit is operating.
Step 2
1. Start the engine.
2. Stop the engine after it has run for 1 or 2 minutes.
3. Depress the pedal with the usual force.
4. If the first pedal stroke is long and becomes shorter with subsequent strokes, the unit is operating.
• If a problem is found, inspect for damage of the vacuum hose, and vacuum tank. Repair if necessary, and
inspect it again.
Step 3
1. Start the engine.
2. Depress the pedal with usual force.
3. If the pedal height does not change, the unit is operating.
4. Hold the pedal down for about 30 seconds.
5. If the pedal height does not change, the unit is operating.
P–14
CONVENTIONAL BRAKE SYSTEM
P–10 MASTER CYLINDER
T–57 WINDSHIELD WIPER ARM AND BLADE
S–50 COWL GRILLE
T–56 WINDSHIELD WIPER MOTOR
S–119 COWL PANEL
P–38 DSC HU/CM REMOVAL/INSTALLATION.
REMOVAL/INSTALLATION.)
REMOVAL/INSTALLATION.)
REMOVAL/INSTALLATION.)
REMOVAL/INSTALLATION.)
P–28 ABS (ABS/TCS) HU/CM REMOVAL/
A6E691243800W02
REMOVAL/INSTALLATION.)
A6E691243800W01
A6E6912W044