Komatsu PC400 - How to Escape from Mud

12. OPERATION
12.13 HOW TO ESCAPE FROM MUD
Always operate carefully to avoid getting stuck in mud. If the
machine does get stuck in mud, use the following procedures to get
the machine out.
12.13.1 WHEN ONE SIDE IS STUCK
When only one side is stuck in mud, use the bucket to raise the
track, then lay boards or logs and drive the machine out. If neces-
sary, put a board under the bucket also.
NOTICE
When using the boom or arm to raise the machine, always have
the bottom of the bucket in contact with the ground. (Never push
with the teeth). The angle between the boom and arm should be 90”
to 110”.
The same applies when using the inverting bucket.
12.13.2 WHEN BOTH SIDES ARE STUCK
When the tracks on both sides are stuck in mud and the machine
will not move, lay boards as explained above, and dig the bucket into
the ground in front. Then pull in the arm as in normal digging
operations and putthe travel levers in the FORWARD position to pull
the machine out.
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