CHAPTER 4 ORGANIZATIONAL MAINTENANCE INSTRUCTIONS Section I.  SERVICE UPON RECEIPT OF EQUIPMENT 4-1. Unpacking the Equipment a. General.    The  pneumatic  rock  drill  assembly  is shipped in two crates.   The boom  assembly  is  removed and crated separately. b. Uncrating. (1) Uncrate the rock drill crawler assembly as illustrated in figure 4-1. (2) 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. (3) Remove the steel bands  securing  the  drill and feed control valve to the crate base and remove the valve. (4) Remove the rock drill feed assembly from the shipping crate as illustrated in figure 4-3. (5) Remove   the   preservative   tape   from   the rock drill cylinder rods and the feed control valve. 4-2. Inspection and Servicing. a. Inspection. (1) Make  a  complete  inspection  of  the  rock drill   for   any   damage   that   may   have   occurred   during shipment. (2) Inspect   the   drill   feed,   deck,   frame   and crawler for damage and loose or missing hardware. (3) Inspect   the    air    motor,    hydraulic    pump, tramming    motors,    hydraulic    valves,    drill    motor    and centralizer for secure mounting. (4) Check  the  hydraulic  pump,  hydraulic  and air control valves, hydraulic cylinders, final drives and drill motor for damage. (5) Inspect  all  hydraulic  and  pneumatic  lines and hoses for damage and loose connections. (6) Check  all  operating  controls  for  damage and proper operation. b. Servicing. (1) Refer  to  LO  5-3820-241-12  and  lubricate the rock drill. (2) Perform   the   before   operation   preventive maintenance services (para 3-4). (3) Inspect   and   adjust   the   lubricator   fitting (para 3-20). (4) Check  the  feed  chain  for  proper  tension. Adjust the feed chain if necessary (para 4-23). (5) Check     the     crawler     tracks     for     proper adjustment.  Adjust the tracks if necessary (para 3-27), 4-3. Installation a. Feed Assembly Installation. (1) 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 position. (2) Connect    a    suitable    hoise    to    the    feed assembly as outlined in paragraph 4-1. (3) Lift the feed assembly and install it on the tilt  and  swing  mechanism  frame  as  illustrated  in  figure 4-4. (4) Install  the  drill  and  feed  control  valve  and connect the hoses as illustrated in figure 4-5. 4-1