Calibration of alignment gauges

1 Clamp the centre of the calibration bar in a vice.

2 Attach an alignment gauge onto each end of the calibration bar.

3 Using the spirit bubble gauge, level both of the measuring gauges and tighten the clamping thumbscrews.

4 Attach the elastic (rubber) calibration cord between adjacent uncoloured holes formed in each rotor.

5 Adjust measuring scale by slackening the two wing nuts positioned beneath each measuring scale, then move the scale until the zero line aligns exactly with the red hairline on the pointer lens. Carefully retighten the wing nuts so as not to move the scale.

6 Detach the calibration cord from the rotors and remove the measuring gauges from calibration bar.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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