Komatsu WA470-6 2006, Operation & Maintenance Manual

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3.4 Transportation Operation
3-152
WA470-6H – VEAM946100
Unloading
1. Load and unload on firm level ground only. Maintain a safe
distance from the edge of a road.
2. Apply the brakes on the trailer securely and insert blocks
under the tires to ensure that the trailer does not move.
Then fix the ramps in line with the centers of the trailer and
the machine.
Be sure that the two sides are at the same height as one
another.
Make the angle of the ramps a maximum of 15º.
Set the distance between the ramps to match the center of
the tires.
If the ramp sags appreciably, reinforce it with blocks, etc.
3. Remove the chains and wire ropes fastening the machine.
4. Set the frame lock bar to FREE position (F).
5. Start the engine.
Warm the engine up fully.
6. Check that the work equipment control lever is at the HOLD
position, then set the safety lock lever to the FREE position.
7. Set the parking brake switch to OFF position (B) to cancel
the parking brake.
8. Determine the direction of the ramps, then drive the machine
slowly down the ramps to unload the machine.
GK032225
Block
Blocks
Ramp
Distance
between ramps
Max. 15°
GK047005
Free
Lock
GK038007
Free
Lock
GK038008
ON OFF