Komatsu WA500-6H, Operation & Maintenance Manual

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3.4 Transportation Operation
3-162
WA500-6H – VEAM430100
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.
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 work equipment lock lever to the FREE
position.
7. Depress the right brake pedal, then set the parking brake
switch to OFF position (B) to release the parking brake.
Keep the right brake pedal depressed.
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°
GK050172
Lock
Free
GK050006
Free
Lock
GK050128
B