Komatsu PC400LC-5 Operation & Maintenance Manual page 129

13. TRANSPORTATION
INCREASING TRACK GAUGE
Remove center frame mounting bolts @ (one side, front + rear:
Center frame
8) from the front and rear of the track frame on the side to be
extended.
Attach steps @ (front and rear) at the side of the track frame.
Swing the upper structure to the side opposite track frame @to
be extended until the upper structure is at a right angle to the
~~~lo I 1 -A
tracks.
REMARK
Height H of the track frame being raised should be less than 50
mm (2 in). Take care not to raise the track frame so much that the
stopper bolt is distorted.
Pull the machine forward with the arm, and the track frame will
slide sideways.
I
Extend the track frame until it comes into contact with the
stopper, then lower the machine slowly to the ground. Install
bolts @ (one side, front + rear: 22) and tighten to specified
torque.
Tightening torque: 2750 k 300 Nm
(280 ? 30 kgm, 2025 f 220 Ibft)
Follow the same procedure to extend the track frame on the
other side.
The track gauge should be changed on level, hard ground.
When changing the track gauge, it is dangerous to operate any
cylinder suddenly. Always operate the control levers slowly.
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