TM 10-3930-671-24 When  jacking  side  of  truck,  be  sure  upright  is  lowered fully  and  do  not  raise  one  side  of  the  truck  more  than about  2  inches  higher  than  the  other,  to  avoid  tipping truck over laterally. If the upright and transaxle are removed, the truck will tip backwards off any blocking under the frame. The back of the truck must be supported by blocking under the steer axle to prevent movement. The reverse is also true. If the counterweight is removed while the truck is up on blocks, the weight of the upright and   transaxle   will   cause   the   truck   to   tip   on   the   front blocks and fall forward. • Removing  counterweight  from  blocked-up truck:   Truck will tip forward. • Removing upright/transaxle  from  blocked- up truck:   Truck will tip backwards. Be  sure  to  put  the  jack(s)  squarely  and  fully  under  the main  side  structure  of  the  frame.  DO  NOT  PUT  THE JACK(S)    UNDER    THE    OUTER    COVERS    WHICH ENCLOSE     THE     FUEL     AND     HYDRAULIC     SUMP TANKS. Before   performing   any   maintenance   work,   check   the truck for stable condition on the blocking. NOTE Depending on jack height, shims under the tires may be needed for clearance to allow removal of jack. 1    Park truck safely. Lower upright fully. 2.    If   necessary,   drive   truck   onto   shim   plates   to increase   underclearance.   Two   jacks   may   be used, one on each side of the truck. 3.    Put the jack(s) under side frame near the center of the truck. 4.    Carefully raise the truck one side at a time, only as  high  as  necessary  to  do  the  maintenance work and not more than a maximum of 6 inches, total. 5.    Put blocks under the side frame, at each side of the  jack.  Put  (spread)  the  blocks  close  to  the steer and drive wheels for maximum stability. 6.    If using one jack, lower the truck onto the blocks and move the jack to the opposite side. Repeat the lifting procedure. 7.    Put the same size blocks under each side of the truck so it will be level. 8.    When maintenance work is completed, lower the entire  truck  to  the  floor  by  reversing  the  lifting procedure.  Lower  the  truck  one  side  at  a  time, while carefully removing the blocks. Check to be sure  no  tools  or  equipment  are  under  the  truck or wheels. Raising Truck With A Hoist When  suitable  equipment  is  available,  the  front  of  the truck   may   be   raised   by   means   of   a   hoist   and   wheel cradles placed under the wheels. F-61