Komatsu D475A-5E0 Operation & Maintenance Manual page 355

Bulldozer
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EFFECTIVE METHOD OF OPERATION FOR DUAL TILTDOZER
HARD SOIL (HARD CLAY, SHALE, ETC.)
If digging is performed in F pitch, and the chassis is raised and the
blade is tilted, the end bit will dig in better.
PUSHING-UP SOIL
1. Dig (A) with STRAIGHT PITCH (1).
When digging gradually (A), use REAR PITCH (2).
If the ground is hard, use FORWARD PITCH (3).
2. Haul (B) with REAR PITCH (2).
If there is any spillage of soil over the top of the blade, change to STRAIGHT PITCH (1).
3. Dump the soil (C) with FORWARD PITCH (3).
This dumps the soil more effectively, and less soil is carried back.
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