ORGANIZATIONAL MAINTENANCE INSTRUCTIONS
Section I. SERVICE UPON RECEIPT OF EQUIPMENT
Unpacking the Equipment
General. The pneumatic rock drill assembly is
shipped in two crates. The boom assembly is removed
and crated separately.
Uncrate the rock drill crawler assembly as
illustrated in figure 4-1.
Use a suitable hoist with a capacity of at
least 24,000 pounds and remove the rock drill crawler
assembly from the crate base as illustrated in figure 4-2.
Remove the steel bands securing the drill
and feed control valve to the crate base and remove the
Remove the rock drill feed assembly from
the shipping crate as illustrated in figure 4-3.
Remove the preservative tape from the
rock drill cylinder rods and the feed control valve.
Inspection and Servicing.
Make a complete inspection of the rock
drill for any damage that may have occurred during
Inspect the drill feed, deck, frame and
crawler for damage and loose or missing hardware.
Inspect the air motor, hydraulic pump,
tramming motors, hydraulic valves, drill motor and
centralizer for secure mounting.
Check the hydraulic pump, hydraulic and
air control valves, hydraulic cylinders, final drives and drill
motor for damage.
Inspect all hydraulic and pneumatic lines
and hoses for damage and loose connections.
Check all operating controls for damage
and proper operation.
Refer to LO 5-3820-241-12 and lubricate
the rock drill.
Perform the before operation preventive
maintenance services (para 3-4).
Inspect and adjust the lubricator fitting
Check the feed chain for proper tension.
Adjust the feed chain if necessary (para 4-23).
Check the crawler tracks for proper
adjustment. Adjust the tracks if necessary (para 3-27),
Feed Assembly Installation.
Connect the air supply to the rock drill as
outlined in paragraph 2-3. Refer to paragraph 2-5 and
position the tilt and swing mechanism in the horizontal
Connect a suitable hoise to the feed
assembly as outlined in paragraph 4-1.
Lift the feed assembly and install it on the
tilt and swing mechanism frame as illustrated in figure
Install the drill and feed control valve and
connect the hoses as illustrated in figure 4-5.