Komatsu D51EX-24, Operation & Maintenance Manual

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MACHINE OPERATIONS AND CONTROLS
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE
METHOD FOR WALK-AROUND CHECK
Check for wear of the point at the tip of the shank, check the mounting condition, and check for damage to the
rivets.
If any problem is found, replace or repair it.
PRECAUTIONS FOR OPERATION
• Lower the ripper gradually when starting to move the machine off. Drive the machine at low speed. When
the optimum digging depth is reached, set the ripper control lever to HOLD position.
Do not dig the shank in deep when starting digging operations.
• During ripping operations, never turn the machine suddenly or travel in reverse. When turning the machine
suddenly or traveling in reverse, raise the shank from the ground surface.
• When performing digging operations with only one shank, always use the center shank. Remove both side
shanks.
• The point end touches the ground at the start of an uphill and at the end of a downhill. If the ground is hard
at this time, the ripper may be damaged. To prevent this, raise the shank to the highest position.
ADJUST WORK EQUIPMENT
METHOD FOR ADJUSTING DIGGING DEPTH
There are mounting pin holes on the shank. Select one of them, depending on the digging depth.
Pin hole position Use
Maximum digging depth
( mm)
(A)
When there
is special
need to dig
deeply
508
(B)
When nor-
mal
428
When changing the digging depth, do as follows.
HANDLE HYDRAULIC RIPPER ATTACHMENTS AND OPTIONS
6-6