TM 5-3815-224-14&P INSERTS AND JIB GENERAL INFORMATION Figure  1  illustrates    the  jib  for  the  Model    5060  crane. This    manual    is    confined    to    lubrication,    installation, removal, adjustment and general information concerning operation and maintenance of the boom inserts , jib and headache ball.  It also contains repair parts information. BOOM AND JIB WORKING RANGE The working range and other pertinent specifications are shown in Figure 2. LIFTCRANE ATTACHMENT GENERAL. The following paragraphs describe procedures for:  increasing boom length, adding jib, and erecting and lowering the jib.  The procedures given are for  attaching  items,  whenever  possible,  without  the  use of an assisting machine.  If an assisting crane is required it  is  noted  that  it  is  required.    It  is  important  that  the machine   operators   manual   is   read   before   proceeding further. INCREASING BOOM LENGTH.  To increase  the  boom length  beyond  the  basic  boom  (base  plus  tip),  proceed as follows: CAUTION This machine is not to exceed 70’ of boom.  DO NOT add inserts beyond a total boom length of 70’. 1. Using   the   basic   boom,   arrange   the   required inserts, on blocking in a line.  See Figure 3 for the boom and   guy   line   arrangement   at   the   particular   length   of boom  required.    Do  not  pin  the  inserts  together  at  this time.  Also arrange and assemble the jib and jib strut, if using,  on  a  minimum  of  6  inches  of  blocking.    This  is done   at   this   time   so   that   when   the   main   boom   is assembled the machine can be moved up to the jib base and be pinned to the tip section of the main boom. NOTE See Figure 3, for the required insert arrangement. 2. When the required inserts are laid out, lower the basic boom.  Provide a minimum of 6 inches of blocking under  the  base  and  tip  section  (see  Figure  2,  View  A). Pin  the  upper  spreader  to  the  boom  base  and  remove the   guy   lines   connecting   the   tip   section   to   the   upper spreader.  Engage the boom hoist to remove all slack in the hoist lines. 3. Remove the bottom connecting pins of the boom base and tip section. WARNING Do not stand under the boom or inside the boom structure when removing pins.  The boom could fall   if   improperly   supported   and   could   cause serious injury. 4. Allow   the   attachment   to   hinge   about   the   top connecting pins and lower the base and tip until they rest on  the  blocking.    Remove  the  top  connecting  pins  (see Figure 2, View B). 5. Engage   the   boom   hoist   and   slowly   raise   the base (insert) off of the blocking.  Reposition the machine behind  the  next  insert  to  be  added  and  align  the  top connectors.  Insert the top connecting pins(Fig.  2, View C). 6. Engage the boom hoist and raise the attachment until the bottom connecting pins can be inserted. 7. Lower    the    attachment    and    provide    blocking under the end of the insert.  Install the guy lines from the end  on  the  insert  to  the  spreader  (see  Figure  2,  View C).).  Unpin the upper spreader from the boom base. 8. Repeat  steps  5  and  6  until  a  total  of  50  feet  of inserts have been connected.  When a total of 50 feet of inserts   have   been   connected   it   will   be   necessary   to install additional guy lines (see Figure 2, View D). WARNING Do  not  cantilever  more  than  50  feet  of  inserts. The attachment or guy lines could be damaged if more than 50 feet of inserts are cantilevered. 9. Continue adding inserts, as explained in steps 5, 6  and  8,  until  the  required  inserts  and  tip  section  have been added. WARNING Consult the load rating chart (TM 5-3810-303-14) regarding    the    boom    lengths    which    require intermediate suspension. JIB.  To attach the jib, proceed as follows: 1