Figure 3-7. Air line lubricator fitting adjustment.
Inspect the pneumatic hoses and fittings for loose.
connections. Report defective hoses to organizational
Section VII. MAINTENANCE OF LIFT, SWING, FEED AND LEVELING
The lift and swing mechanism consists of a
pivot, boom assembly and dump assembly.
The feed and leveling mechanism consists of the
feed assembly, centralizer, feed chain, drill trunnion and
Lift and Swing Components
Inspect all pivot points, bushings and pins on the lift and
swing mechanism for damage or excessive wear. Report
all defects to organizational maintenance.
Feed and Leveling Components
Inspect the centralizer to make sure the arms
operate freely. Keep arm pivot areas free of dirt and
Inspect the feed chain for proper adjustment.
The chain should have a slight sag at all times. If
Inspect the drill trunnion for proper operation.