Section-XIV. HYDRAULIC CYLINDERS
hoses and fittings from the cylinders to be re-
The hydraulic cylinders used on the pneu-
b. Hydraulic Boom Cylinders. See figure
matic drill are all essentially identical in opera-
3-17 and remove the boom swing cylinder and
tion and design. The two cylinders used on the
the boom lift cylinder.
hydraulic boom assembly (boom swing and
c. Power Dump and Swing Cylinders. See
both horizontally and vertically. The two cylin-
the swing cylinder from the power dump and
ders used on the power dump and swing assem-
d. Drill Guide Extension Cylinder. See
position of the drill guide. The remaining
cylinder is a part of the power guide extension
moves the drill guide up and down within the
clamps of the extension mounting.
the hydraulic cylinders.