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NCT Manual. - National Car Testing Service

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NATIONAL CAR TEST (<strong>NCT</strong>) MANUAL 2012<br />

53<br />

BRAKE MASTER CYLINDER/SERVO/VALVES/CONNECTIONS<br />

Method of <strong>Testing</strong><br />

Master Cylinder and Reservoirs<br />

1. Examine for security.<br />

2. Check for leaks.<br />

Servos<br />

Examine servo for security of mounting.<br />

Valves<br />

1. Examine all valves for security of mounting.<br />

2. With brakes applied, check for leaks.<br />

3. Check that load sensing/brake proportioning valves are not damaged, leaking or inoperative and are correctly adjusted.<br />

NOTES<br />

1. Visual inspection. Check for completeness and full connection of linkage, leaks, and if possible, correct<br />

movement. (Brakes are applied with vehicle on lift.)<br />

ITEM<br />

Master Cylinder/Reservoirs<br />

Servo<br />

Valves<br />

Load Sensing and Brake<br />

Proportioning Valves<br />

REASONS FOR FAILURE<br />

1 Insecurely mounted/mounting panel cracked.<br />

2 Leaking or defective.<br />

3 Insecure or defective.<br />

4 Damaged, badly corroded or leaking.<br />

5 Missing, insecurely mounted, leaking or defective.<br />

6 Missing, bypassed, linkage sticking, damaged, leaking<br />

or inoperative or obviously incorrectly adjusted.<br />

83

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