Komatsu GD555-5 Operation & Maintenance Manual page 206

OPERATION
OPERATION
RIPPER OPERATIONS - WITH FRAME STRAIGHT
CAUTION
When using the ripper, set the frame straight.
For heavy-duty conditions, use 1 to 3 shanks.
For general soil condition, use 3 to 5 shanks.
Keep the ripper at a depth where there is no tire slip and where the
engine horsepower can be used to its full.
Travel in a straight line at approximately 2 to 4 km/h (1.2 to 2.5
MPH), and gradually insert the points into the ground.
On slopes, carry out ripping downhill to use the weight of the
machine.
NOTICE
To prevent damage, raise the ripper from the ground before turning the
machine.
Carry out cross ripping only when there is a special purpose.
When breaking up a paved surface, raise the ripper after digging
up the ground the surface.
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