TMI0-3930-660-10 (1) (2) DO  NOT  downshift  at  high  speeds.  Vehicle  will  slow  suddenly  and  drop the  load  or  cause  operator  injury. NOTE The  gears  should  be  engaged  only  after  reaching  the  top  speed  of  the next  lower  gear.  If  necessary,  the  vehicle  should  be  slowed  by  means  of the   service   brakes. Shifting  to  the  next  higher  gear  maybe  accomplished  at  any  engine  RPM  while  the  vehicle  is  in motion. When   downshifting,   DO   NOT   over-rev   the   engine.   Allow   the   vehicle   to   slow   before   shifting   to the  next  lower  gear. e.  Accelerating    Hydraulic    Functions.    To  accelerate  the  operation  of  the  hydraulic  functions,  use the    following    procedure. (1)   Depress   and   hold   the   transmission   disconnect   pedal. (2)   Depress   the   accelerator   pedal   to   increase   and   maintain   higher   engine   speed. (3)   Perform   the   desired   hydraulic   functions. (4)   Reduce   engine   speed   to   idle   after   operations   are   completed. (5)   Shift   the   travel   select   control   lever   as   necessary. (6)  Slowly  release  the  transmission  disconnect  pedal. 2-31