SECTION III. PREPARATION FOR USE AND SHIPMENT 3-1. GENERAL.      The   air   compressor    unit    is    60 inches  (1524  mm)  long,  50  inches  high  (1270  mm),  48 inches    (1219    mm)    wide,    and    weighs    1542    pounds (680.4Kg).    The  compressor  unit  is  shipped  completely assembled   and   tested.      There   are,   however,   certain steps  which  shall  be  taken  prior  to  putting  the  unit  into operation. This section contains step-by-step procedures  to  be  followed  when  preparing  the  unit  for use, storage, or shipment. 3-2. PREPARATION   FOR   USE.      To   prepare   the comppressor unit for use, proceed as follows: a. Remove all crating, blocking, and protective material from compressor unit. WARNING Wear goggles to prevent electrolyte from coming    into    contact    with    eyes.        To prevent serious burns wear rubber gloves and apron when filling battery. b. Fill  each  battery  cell  with   electrolyte   to   a level of 1/4 inch to 1/2 inch above the top of the battery plates.  Using a hydrometer, check the battery cells for a specific gravity of 1.250 or higher. c. To deprocess the compressor unit, refer to DA  Form  2258,  Preservation  and  Depreservation  Guide for Vehicles and Equipment. d. Inspect    unit    for    any    damaged    gauges, meters, valves, loose connections or mountings, loose or missing   hardware,   frayed   insulation   on   wiring,   or   any other  damage.    Check  all  air  tubing  and  hose  for  firm connections and damage that may have resulted from a chaffing condition.  If damaged tube or hose assemblies exist, replace the damaged items as required. WARNING Connect ground battery cable last. e. Connect  battery  cables.    Unit  is  designed for negative ground. f. Remove  fuel  tank  filler  cap  and  fill  tank  to capacity   with   recommended   fuel   (refer   to   Table   1-1). Replace filler cap. g. Close    all    control    valves    on    the    control panel. h. Perform   procedures   contained   in   PRIOR TO  OPERATION  (Section  IV)  and  INSPECTION  AND PREVENTIVE    MAINTENANCE    (Section    V),    refer    to Table 5-2. 3-3. PREPARATION FOR STORAGE OR SHIPMENT. Preparation for storage or shipment of the air compressor   unit   shall   be   in   accordance   with   MIL-D- 52838(ME). 3-1/(3-2 Blank)