TM 10-3930-671-24 3. Put   wooden   support   blocks   conveniently   near upright  rails  before  raising  the  upright.  Use  two 4x4 inch hardwood blocks or equal, of approximate lengths shown. 4. Start engine and raise the upright carriage. 5. Hold the taller block against inner rail and lower the upright until carriage rests on block. 6. Hold the shorter block against the outer rail and lower   the   upright   until   inner   rail   rests   on   the block. 7. Reverse the procedure to remove blocking. Raising Rear of Truck The   truck   may   be   raised   at   the   rear   by   jacking   and blocking under the center of the frame member at either the front or rear steer axle mounting, or under the center section of the steer axle. Refer to Section 2.1, Specifications, for truck weights. • Never   lift   or   block   a   truck   using   the counterweight. Failure to follow procedures   outlined   in   this   manual   can result in injury or death. • Before performing any maintenance work, check the truck for stable condition on the blocking to prevent injury to personnel and damage to equipment. NOTE If  there  is  insufficient  clearance  under  frame  for  your jack,  the  truck  may  first  be  driven  onto  shims,  such  as 1'x6"x12"  pieces  of  board,  to  increase  the  truck  frame underclearance. Put  an  equal  amount  of  blocks  under  each  side  of  the truck   to   provide   a   level   working   position.   Individual pieces  of  blocking  with  minimum  length  equal  to  the width of the truck are recommended. 1.    Park truck safely. Put blocks at front and rear of drive wheels. 2.    Put  a  floor  jack  under  the  rear  of  truck  frame. NEVER PUT THE JACK UNDER THE COUNTERWEIGHT. 3.    Raise  the  truck  only  as  high  as  necessary  to perform the maintenance work. 4.    Put blocks at both sides of the truck, fully under the frame main side structure. Put the blocks in front of but close to. the counterweight and steer wheels for best truck stability. 5.    Lower the truck onto the blocks and remove the jack. 6.    When maintenance work is completed, lower the rear of truck to the floor by reversing the above procedure. Raising Entire Truck Refer to Section 2.1, Specifications, for truck weights. When removing the transaxle with the truck blocked up by  the  frame,  truck  can  tip  backwards  due  to  its  heavy counterweight.  Both  upright  and  counterweight  must  be removed    before    attempting    to    raise    the    truck    for transaxle removal. F-60