Komatsu D31EX-21, Operation & Maintenance Manual, Page: 245 / 256

ATTACHMENTS, OPTIONS
HANDLING HYDRAULIC RIPPER
6-5
OPERATION 6
CHECK BEFORE STARTING ENGINE, ADJUST 6
WALK-AROUND CHECK
1. 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 abnormality is found, replace or repair.
PRECAUTIONS WHEN OPERATING 6
q
Travel in low speed and lower the ripper gradually when starting to move the machine off. When the optimum
digging depth is reached, move the control lever to the HOLD position.
Do not dig the shank in deep when starting digging operations.
q
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.
q
When carrying out digging operations with only one shank, always use the center shank. Remove both side
shanks.
q
When starting to travel up a steep slope or when reaching the bottom of the slope, the point may touch the
ground. On hard ground, there is danger of the point breaking if it touches the ground, so raise the shank to
the maximum height.
ADUSTING POSTURE OF WORK EQUIPMENT 6
REPLACEMENT OF POINT
A point is installed to protect the shank. If the point is worn,
replace it as follows.
1. Put a pin remover in contact with the pin marked by the
arrow and tap with a hammer to remove.
2. Replace the point.
3. Insert the pin half way, then knock it in fully with a hammer.