TM 10-3930-671-24 6. Remove  the  top  hood  (seat  deck)  and  drivers seat as an assembly.  The seat deck is retained by   two   pivot   pins   and   a   gas   assist   (support) cylinder.        Reference    Section    12.2,    Chassis Components. First lift the seat to the fully-raised position.  Use a chain hoist or similar holding means to support the seat deck in this position.  Remove the clips retaining the pivot pins.  Loosen and remove the nut   holding   the   support   cylinder   to   the   frame bracket and disconnect the cylinder.   Reference Section 12.2, Chassis Components. 7. Remove the main hydraulic valve cover.  Loosen and remove the firewall (plate assembly). 8. Loosen attachment of the main hydraulic control valve  mounting  plate.    Tilt  plate  and  main  valve forward.    Leave  hoses  attached  to  main  valve. However,  you  may  find  that  selected  hydraulic lines   will   have   to   be   removed   or   moved   for clearance.    Determine  this  based  on  your  truck model installation. 9. Disconnect the air cleaner  nose  from  engine  air intake.  It is recommended to remove the engine air  cleaner  assembly  from  the  truck  for  better access    and    clearance.        Reference    Sections 4.12, 4.13,.4.14, Engine Components. 10. Remove the muffler and tailpipe.  These can be removed  as  an  assembly  by  removing  the  bolt holding muffler bracket to radiator upper support, or  muffler  can  be  separated  by  removing  upper damp.    First,  loosen  or  remove  the  clamp  on lower  end  of  the  muffler  connection  to  exhaust pipe.  Separate muffler from exhaust pipe. 11. Remove    the    exhaust    pipe.        Disconnect    the exhaust  pipe  from  the  engine  exhaust  manifold by removing the fasteners at the manifold flange joint   and   removing   the   exhaust   pipe   together with     the     gasket     and     seals,     as     applicable. Reference Section 12.2, Chassis Components. 12. Remove  radiator  cover  trim  plate,  sound  seals, engine    compartment    sound    seal    plate,    and radiator upper support. F-114

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