UNUSUAL (adj)  In an unusual "manner"  UNUSUAL LOADS CAN CAUSE TREAD SEPARATION IN THE TIRES.  
 UNUSUALLY (adv)  Not usually  THE VALVE OPERATES WHEN THERE IS AN UNUSUALLY LARGE FLOW OF FLUID.  
 UNWANTED (adj)  That must not be there  UNWANTED AIR GOES OUT THROUGH THE OVERFLOW PORT.  
 UNWIND (v), UNWINDS, UNWOUND, UNWOUND  To remove something from around an object  DO NOT TWIST THE CABLES WHEN YOU UNWIND THEM.  
 UP (adj)  In a position "above"  MOVE THE SWITCH TO THE "UP" POSITION.  
 UP (adv)  To a position "above"  IF THE POINTER MOVES UP, DECREASE THE POWER.  
 UP (pre)  To a position "above"  LET THE SLEEVE MOVE UP THE GUIDE TUBE.  
 upon (pre)  ON, WHEN (con)  PUT THE OHMMETER ON A FLAT SURFACE.  Put ohmmeter upon a flat surface.
      WHEN YOU SET THE LEVER TO "UP", THE HYDRAULIC PRESSURE MUST DECREASE.  Upon UP selection, the hydraulic pressure should decrease.
 upper (adj)  MAXIMUM, TOP  FILL THE CONTAINER TO THE MAXIMUM LEVEL.  Fill the container to the upper level.
       THE AIRFLOW THEN GOES ALONG THE TOP AND BOTTOM SURFACES OF THE SLATS.  The airflow then  passes over the upper and lower surfaces of the slats.

 
 
 uppermost (adj)  UP (adv)   INSTALL THE BOLTS WITH THEIR HEADS UP.  Install bolts with heads in uppermost position.
 uppermost (adv)  UP  INSTALL THE BOLTS WITH THEIR HEADS UP.  Install bolts with heads uppermost.
 upright (adj)  VERTICAL  ATTACH THE TAPE TO THE VERTICAL POST BETWEEN THE WINDSHIELD PANELS.  Secure tape to the upright post between the windshield panels.
 UPSTREAM (adj)  In a direction opposite to the flow  DISCONNECT THE UPSTREAM CONNECTION OF THE VALVE.  
 UPSTREAM (adv)  In a direction opposite to the flow  MOVE THE PROBE UPSTREAM AND MONITOR THE TEMPERATURE AGAIN.  
 UPSTREAM OF (pre)  In a direction opposite to the flow  DISCONNECT THE CONNECTION UPSTREAM OF THE VALVE.  
 up to (pre)  UNTIL, THRU, MAXIMUM (n)  UNTIL THIS STEP, THE UNIT IGNORES ALL OUTPUT SIGNALS.  Up to this step the unit ignores all output signals.
      DO STEPS 1 THRU 4.  Do all steps up to and including step 4.
       YOU CAN INSTALL A MAXIMUM OF TEN WASHERS.  You can install up to ten washers.
 upward (adv)  UP  MOVE THE LEFT AILERON UP.  Move the left aileron upward.