Crane Operation
Operator’s Manual for Crawler Crane
4.5.1 Operation of travel gear
4.5.1.1 Components of travel gear
The travel gear comprises drive sprocket, driven sprocket, track-carrier roller, track roller
and track pad, crawler carrier as well as traveling reducer. Both right crawler carrier and
left crawler carrier are fitted with an independent traveling reducer. The hydraulic oil in
traveling motor is supplied by superstructure main pump through main valve and centre
revolving joint.
Figure 4-29 Travel gear
4.5.1.2 Operation of travel gear
The traveling movements are controlled by left and right control levers. The movements
“left crawler forwards” and “left crawler backwards” are controlled by left control lever, and
the movements “right crawler forwards” and “right crawler backwards” are controlled by
right control lever. In this way, the crane can carry out such movements as traveling
straight ahead/backwards, steering during traveling and turning on spot.
Figure 4-30 Operation of travel gear
4-40
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