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ROAD TEST PROCEDURES BRAKESYSTEM NOTE: ABORT ROAD TEST IF BRAKE PEDAL IS LOW OR FEELS UNSAFE AND PERFORM BRAKE INSPECT.

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Presentation on theme: "ROAD TEST PROCEDURES BRAKESYSTEM NOTE: ABORT ROAD TEST IF BRAKE PEDAL IS LOW OR FEELS UNSAFE AND PERFORM BRAKE INSPECT."— Presentation transcript:

1 ROAD TEST PROCEDURES BRAKESYSTEM NOTE: ABORT ROAD TEST IF BRAKE PEDAL IS LOW OR FEELS UNSAFE AND PERFORM BRAKE INSPECT

2 BEFORE TEST DRIVE 1)CHECK BRAKE FLUID LEVEL 2)CHECK PEDAL HEIGHT 3)CHECK EMERGENCY BRAKE FOR PROPER OPERATION

3 BEGIN ROAD TEST DRIVE VEHICLE ABOUT 5 MILES PER HOUR LIGHTLY PRESS BRAKE PEDAL AND LISTEN FOR ANY ABNORMAL SOUNDS. DRIVE VEHICLE ABOUT 5 MILES PER HOUR LIGHTLY PRESS BRAKE PEDAL AND LISTEN FOR ANY ABNORMAL SOUNDS. DOES VEHICLE STOP? DOES VEHICLE STOP? IF CUSTOMER IS COMPLAINING ABOUT NOISE DRIVING NEXT TO A BUILDING MAY HELP YOU HEAR IT! IF CUSTOMER IS COMPLAINING ABOUT NOISE DRIVING NEXT TO A BUILDING MAY HELP YOU HEAR IT!

4 CONTINUE ROAD TEST NOW LET’S INCREASE OUR SPEED TO 25 MILES PER HOUR. LIGHTLY APPLY THE BRAKES. NOW LET’S INCREASE OUR SPEED TO 25 MILES PER HOUR. LIGHTLY APPLY THE BRAKES. DOES THE VEHICLE PULL TO THE RIGHT OR LEFT? DOES THE VEHICLE PULL TO THE RIGHT OR LEFT? DOES THE BRAKE PEDAL FEEL FIRM? DOES THE BRAKE PEDAL FEEL FIRM? DOES THE VEHICLE STOP? DOES THE VEHICLE STOP? HEAR ANY STRANGE NOISES? HEAR ANY STRANGE NOISES?

5 CONTINUE ROAD TEST LET’S RAISE OUR SPEED TO 55 MILES PER HOUR AND APPLY THE BRAKES LIGHTLY. LET’S RAISE OUR SPEED TO 55 MILES PER HOUR AND APPLY THE BRAKES LIGHTLY. DOES THE STEERING WHEEL SHAKE? DOES THE CAR PULL LEFT OR RIGHT? DOES THE VEHICLE STOP? DO YOU HEAR ANY ABNORMAL NOISE?

6 SERIOUS TESTING NOW WE NEED TO CHECK THE BRAKES FOR STOPPING POWER!! THIS SHOULD BE PERFORMED WITH EXTREME CAUTION!! NOW WE NEED TO CHECK THE BRAKES FOR STOPPING POWER!! THIS SHOULD BE PERFORMED WITH EXTREME CAUTION!! FIND A SAFE PLACE TO PERFORM THIS TEST. BEGIN BY GETTING UP TO 45 MILES PER HOUR.CHECK MIRROR FOR TRAFFIC BEHIND YOU!! FIND A SAFE PLACE TO PERFORM THIS TEST. BEGIN BY GETTING UP TO 45 MILES PER HOUR.CHECK MIRROR FOR TRAFFIC BEHIND YOU!! YOU DO NOT WANT TO BE REARENDED!! YOU DO NOT WANT TO BE REARENDED!! IF IT IS CLEAR APPLY BRAKES FIRMLY. IF IT IS CLEAR APPLY BRAKES FIRMLY. NEXT PAGE NEXT PAGE

7 SERIOUS TESTING PART 2 DID VEHICLE STOP IN STRAIGHT LINE? DID VEHICLE STOP IN STRAIGHT LINE? DID PEDAL PULSE OR KICKBACK? DID PEDAL PULSE OR KICKBACK? WAS STOPPING DISTANCE ACCEPTABLE? WAS STOPPING DISTANCE ACCEPTABLE? DID ONE WHEEL SLIDE? DID ONE WHEEL SLIDE? DID ALL WHEELS BRAKE EVENLY? DID ALL WHEELS BRAKE EVENLY? DID YOU CRASH OR GET REARENDED? DID YOU CRASH OR GET REARENDED?

8 BRAKE CONCERNS BRAKE FLUID LOW BRAKE FLUID LOW 1) POSSIBLE LEAK 2) NORMAL IF BRAKE LINING WORN PEDAL HEIGHT TOO LOW PEDAL HEIGHT TOO LOW 1) BRAKES OUT OF ADJUSTMENT 2) MISADJUSTED MASTER CYLINDER FREEPLAY 3) BENT OR DAMAGED PEDAL ASSEMBLY

9 BRAKE CONCERNS 2 BRAKE PEDAL TOO HIGH BRAKE PEDAL TOO HIGH 1) MISADJUSTED MASTER CYLINDER FREEPLAY EMERGENCY BRAKE PULLS OUT OVER 4 CLICKS EMERGENCY BRAKE PULLS OUT OVER 4 CLICKS 1) BRAKES OUT OF ADJUSTMENT 2) CABLES STRETCHED OR BROKEN 3) EMERGENCY CABLES NEED ADJUST

10 BRAKE CONCERNS 3 ONE WHEEL LOCKS AND SLIDES ONE WHEEL LOCKS AND SLIDES 1) BRAKE LINING CONTAMINATED 2) BRAKE HOSE DETERIORATED 3) AIR IN SYSTEM VEHICLE PULLS LEFT OR RIGHT VEHICLE PULLS LEFT OR RIGHT 1) LINING CONTAMINATION 2) BRAKE ADJUSTMENT OR AIR IN SYSTEM 3) BRAKE HOSES DEFECTIVE 4) ALIGNMENT INCORRECT (WORN PARTS) 5) TIRES

11 BRAKE CONCERNS 4 BRAKE PEDAL FEELS SPONGY BRAKE PEDAL FEELS SPONGY 1) AIR IN SYSTEM 2) BRAKE HOSES DEFECTIVE 3) HYDRAULIC SYSTEM LEAK BRAKE PEDAL PULSATION BRAKE PEDAL PULSATION 1) NORMAL IF ABS EQUIPPED 2) WARPED ROTORS OR DRUMS

12 BRAKE CONCERNS 5 GRINDING NOISES GRINDING NOISES 1) LININGS METAL TO METAL 2) FOREIGN OBJECT IN BRAKES 3) BROKEN BRAKE HARDWARE 4) ROTORS OVERHEATED OR SCORED

13 BRAKE CONCERNS 6 IF YOU CRASHED OR GOT REARENDED 1) CALL 911 2) CALL YOUR BOSS 3) CALL YOUR INSURANCE AGENT 4) CALL A CAB LOOK FOR NEW JOB!! LOOK FOR NEW JOB!!

14 THE END ANY QUESTIONS ANY QUESTIONS ASK INSTRUCTOR ASK INSTRUCTOR


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