Komatsu PC450-8 Operation & Maintenance Manual page 439

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HIGH REACH DEMOLITION EQUIPMENT 27M

Adjustment of boom angle warning sensor.

1. Loosen bolt (A) and adjust so that clearance between the

proximity switch and plate (1) is 5 - 8 mm.

2. Raise the boom to the maximum height, then gradually lower

it and stop the boom at the position where the indicator of the

inclination gauge is on line (P) between the green range and

3. Loosen bolt (B) and move plate (2) to the left or right to fix

dimension (L) so that the buzzer sounds at this position.

Set clearance so that there is no contact even when the boom is

This adjustment should only be performed by Komatsu Certi-

fied Mechanics. Failure to adjust properly may result in an

unsafe operating condition.

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