TM 10-3930-669-34 2-18.  GENERAL INSPECTION INSTRUCTIONS. a. Cleaning.    Clean  all  parts  before  inspection.    Check  for  defects  such  as  physical  distortion,  wear,  cracks,  and burrs.  If any defect is found, correct it before assembly. b. Sealing  Surfaces.    Inspect  all  surfaces  in  contact  with  grease,  packings,  or  seals  for  nicks  and  burrs.    If  ,  any defect is found, correct it before assembly. c. Bearings.  Inspect bearings for rusting, pitting, rolling, peening, scoring, burning, brinnelling, and fatigue cracking. d. Gear and Splined Shafts.  Inspect gears and splined shafts for wear, pitting, rolling, peening, scoring, burning, brinnelling, and fatigue cracking. e. Tubing  and  Hoses.    Inspect  all  hose  surfaces  for  broken  or  frayed  fabric.    Check  for  breaks  caused  by  sharp kinks or contact with other parts of the forklift.  Inspect copper tubing lines for kinks.  Inspect fitting threads for damage. Replace any defective parts.  After assembly and during initial forklift operation period, check for leaks. f. Electrical   Parts.      Inspect   all   wiring   harnesses   for   broken,   chafed,   or   burned   wiring.      Inspect   all   terminal connectors for loose or broken parts. g. Metal Parts.  Visually inspect all castings and weldments for cracks.  Parts that carry a great load should receive magnetic particle inspection.  Critical non-ferrous parts may be inspected with fluorescent penetrate. h. Drain Plugs.  When removing drain plugs from transmission, engine, hydraulic system components, or axle differential  and  planetary  hubs,  check  amount  of  sediment  on  plugs.    Accumulations  of  grit  or  fine  metal  particles  may indicate actual or potential component failure.  A few fine particles are normal.  This inspection helps to determine if there are defective parts prior to internal inspection of the component and to predict degradation of the equipment. 2-19.  GENERAL REPAIR INSTRUCTIONS. a. Burrs.  Remove burrs from surface with a fine-cut file or crocus cloth. b. Exterior  Parts.    Chassis  and  exterior  painted  parts  may  be  resurfaced  when  paint  is  damaged  or  where  parts have been repaired. NOTE Polished  or  machined  steel  parts  not  protected  by  cadmium,  tin,  copper,  or  other  plating  or surface   treatments   require   protection.      Bare   metal   surfaces   must   be   free   of   moisture   when protective coating is applied. c. Protecting Parts.  Protect bare steel surfaces from rust when not actually undergoing repair work.  Dip parts in, or spray them with, corrosion preventive compound.  Aluminum parts may require protection in atmospheres having a high salt content. 2-92