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TEST PROCEDURE (cont)
ASSEMBLY - TM-5-1940-277-34_63

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 Section III.  DIRECT SUPPORT MAINTENANCE PROCEDURES GENERAL.    This  section  covers  general  information  for  disassembly,  cleaning,  inspection,  repair  and  assembly  for component parts of the bridge erection boat.  Specific instructions for individual component maintenance are covered in the appropriate sections. DISASSEMBLY.    Related  parts  must  be  kept  together,  preferably  in  a  tray,  to  prevent  their  being  lost.  For  those components which have too many or too large parts to use trays, tag parts with their name as they are disassembled. This will make it easier to identify parts when reassembling the components.  Precision matched or mated parts will be marked to insure reassembly in the proper position and place. CLEANING.    All  parts  except  bearings  are  to  be  cleaned  as  specified  in  TM  9-247.    Bearings  should  be  cleaned  as specified in TM 9-214. INSPECTION. a.    General.  The importance of carefully inspecting disassembled parts cannot be stressed enough.  Reassembly of substandard  or  defective  parts  can  result  in  needless  troubleshooting,  disassembly  and  inspection.    Inspection procedures must be performed by experienced personnel using proper tools and equipment.  All measuring and testing  equipment  must  be  checked  periodically  and  when  required  accurately  calibrated  in  accordance  with current directives.  The recording of complete and accurate inspection records as specified in DA Pam 738-750 is a necessary part of all inspection actions. b.    Metallic Parts.  The following procedures should be followed when inspecting metallic parts. (1)    Inspect all parts for cracks. (2)    Inspect gear teeth, retaining ring grooves and mating surfaces for burrs. (3)    Inspect mating and polished surfaces for nicks, scratches and rust.  Any nick, scratch, or rust is cause for rejection. (4)    Inspect short metal parts for bends, cracks, tears, broken comers or defective welts. c.    Non-Metallic  Parts.    Non-metallic  parts  such  as  seals  and  gaskets  are  not  subject  to  inspection.    They  will  be disposed of upon removal and replaced by new items during reassembly. REPAIR a.    Hull  parts  that  are  cracked  may  be  repaired  by  welding  if  it  does  not  distort  or  impair  the  strength  of  the  part. Welting procedures will be accomplished as specified in TM 9-237. b.    A  fine  file  or  hone  may  be  used  to  remove  small  burrs  from  gear  teeth,  retaining  ring  grooves  and  mating surfaces.  The burrs must be very minor and if on gears only on the engaging edge of the teeth. c.    Damaged painted surfaces should be repainted as soon as possible to prevent corrosion. Change 3  2-27







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