Kato SR-300L, Instruction Manual

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18-4-2 Extension and retraction of the boom sections 3 and 4
(611A-0044-0E)
Start these operations when the boom section 2 is fully extended switching the boom extension/retraction switch to the
boom sections 3 and 4 side.
Extend : Set the crane operation switch to the "ON" position and depress the boom extension/retraction pedal
forward.
Retract : Set the crane operation switch to the "ON" position and depress the boom extension/retraction pedal
backward.
If the boom section 2 is not fully extended, the boom sections 3 and 4 cannot extend even if the
boom extension/retraction switch is set to the boom sections 3 and 4 side.
(611A-0045-0E)
(1) Extending the boom sections 3 and 4
1) Set the crane operation switch to the "ON" position.
2) Fully extend the boom section 2.
3) Set the boom extension/retraction switch to the boom sections 3 and 4 side.
4) Check that the main and auxiliary hooks are lowered sufficiently below the boom.
5) Move the boom extension/retraction pedal to the extension side.
(2) Retracting the boom sections 3 and 4
1) Set the crane operation switch to the "ON" position.
2) Set the boom extension/retraction switch to the boom sections 3 and 4 side.
3) Check that the main and auxiliary hooks are not lowered more than necessary below the boom.
4) Move the boom extension/retraction pedal to the retraction side.
5) If you wish to go on to retract the boom section 2, first confirm that the boom sections 3 and 4 are completely
retracted then return the pedal briefly to the neutral position before switching the boom extension/retraction
switch to the boom section 2 side to retract the boom section 2.