Machine Operation
SY50U Excavator OMM
4-40
Operation and Maintenance Manual — 0120
SANY
1. Position the boom and arm at an angle (1) between 90°
and 110°.
2. Pivot the upper structure to position the boom over the
track that is stuck.
3. Curl the bucket so the back of the bucket touches the
ground.
4. Lower the boom to raise the track.
5. Remove mud buildup by operating the lifted track
forward and backward.
6. Place cribbing under the stuck track while lifted to provide a firm surface if necessary.
7. Raise the boom to lower the track onto the cribbing.
8. Drive the machine to solid ground at low speed.
Two Tracks Stuck
1. Position the boom and arm at an angle between 90° and 110°.
2. Pivot the upper structure to position the boom over the front of the machine.
3. Curl the bucket so the back of the bucket touches the ground.
4. Lower the boom to raise the front of the tracks.
5. Place cribbing under the tracks to provide a firm surface if necessary.
6. Raise the boom to lower the tracks onto the cribbing.
7. Cut the bucket into the ground in front of the machine. Retract the arm (as with normal excavating) while
driving the machine forward out of the mud.
If the machine does not move, tow the machine. See “Towing the Machine” on page
WARNING!
•
Rotating tracks are dangerous. Stay away from rotating tracks.
•
Use caution when placing cribbing under the track. The machine is supported only by the
boom and could drop without warning.
Failure to follow these warnings could result in death or serious injury.
Fig. 4-55
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