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TEFLON HOSE - Medium Pressure (with Vacuum Service) (cont)
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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INSTALLATION - TM-5-4210-220-34_28
TM 5-4210-220-34 e. Fasteners Replace any bolt, screw, nut, or fitting that has damaged threads.  Inspect tapped holes for damage.  If fitting cannot be retapped with next oversize screw or stud, chasing the threads with proper size tap or die may cure the problem. f. Lockbolts The lockbolt and collar type fasteners are used to secure the body panels on the truck Always  use  the  correct  lockbolt  when  replacing  equipment.      Measure  the  width  of  all  the  various  layers  of metal.   Add these together and use the lockbolt with the correct grip range. NSN VENDOR GRIP RANGE HOLE PART NO. (INCHES) SIZE 5306-01-245-0086 2801-06-03 0.1 25/0.250 .203 2590-01-244-6212 2801-06-04 0.187/0.312 .203 5306-01-244-6247 2801-06-05 0.250/0.375 .203 5306-01-245-0087 2801-06-06 0.312/0.437 .203 5306-01-244-6248 2801-06-08 0.437/0.562 .203 REMOVAL (1) Using a hammer and a center punch, center punch the lockbolt head. (2) Using a 13/64 in.   drill bit and an electric drill, drill the lockbolt head until it is removed. (3) Using a hammer and a pin punch, tap on lockbolt shank until it falls out. INSTALLATION (1) Set and clamp parts to be lockbolted in proper alinement.   If holes are predrilled aline holes and clamp parts together. (2) Drill 13/64 in. mounting holes as necessary. (3) Insert lockbolt into prepared hole.  Ensure the lockbolt is installed with the head facing the outside of the body. (4) Install the lockbolt collar onto the lockbolt from the opposite side of body panel. (5) Place nose of hand tool (Model 721) over the shank of the lockbolt and against the lockbolt collar. (6) Squeeze  hand  tool  levers  together.    As  the  tool  pulls  on  the  lockbolt  shank,  the  sheets  of  metal  are drawn together.  The tool compresses the lockbolt collar Into the locking grooves and continues to pull on  the  lockbolt  shank  until  lockbolt  collar  is  completely  compressed.    The  shank  will  break  off  at  the neck.  Discard the portion of the lockbolt shank that breaks away. (7) Repeat steps 1 thru 6 until all necessary lockbolts are installed. g. Insert Fasteners There are two different sizes of Insert fasteners used on this truck Use the following table to determine size and NSN for either insert fastener. 2-18

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