TM 10-3930-671-24 Attach a chain or sling to the upright and  a  hoist  before  removing  any  tilt cylinder  or  upright  attachment  parts. Be     sure     to     secure     and     support upright  from  falling  before  removing tilt     cylinders.          Failure     to     secure upright could result in injury or death. 5. Remove the upright. Refer to Section 13.  1, Upright Removal. 6. Loosen    and    remove    frame    side    door    panel fasteners. Heavy components can fall and cause severe   injury.      Keep   your   feet   and body clear at all times. 7. Remove   frame   side   compartment   doors   from each side of the truck. 8. Use  a  safety-inspected  and  approved  hoist   or other  lifting  device  of  adequate  capacity.    Raise truck  up  12-14  in.  (305-356  mm)  off  the  floor. Put  wheel  cradles  of  correct  capacity  under  the steer  wheels.    Put  narrow  metal   or   hardwood blocks under the front sides of frame. F-332