Doosan DX300L Excavator Swing Speed & Deceleration Force Test Guide

This instruction show you guide on how to perform swing speed and deceleration force test for Doosan DX300LC excavator.

Extend the bucket cylinder completely and retract the arm cylinder, as shown in Figure 6, to test swing speed. The lowest point of the bucket will be approximately 1.5 m (3') off the ground.

 

Use paint marks at the same point on the turntable and 

undercarriage, or select alternate measuring locations and use a stopwatch to time 3 full 360° rotations. The time required for 3 revolutions should be between 15.5 and 17.5 seconds in Standard Mode, 15.5 and 17.5 seconds in Power Mode.

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Swing Deceleration Force Test
With the boom, arm and bucket in the same position as for the swing speed test, rotate the turntable so that the boom is evenly centered between the side frames, pointing straight ahead.Locate the 90° reference point, perpendicular to the boom. Mark the turntable and undercarriage with paint at the 90° point.
Make several attempts to rotate the turntable exactly 90°,starting from the boom straight ahead position. Engage the swing lever and brake at the 90° point.

Record how far the turntable drifts past the stop point,measuring the distance between paint marks. Maximum distance should be less than 1200 mm (47-1/4"), in both Power
Mode and Standard Mode.


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