TM 5-3895-373-20 7.8. ADJUST/CALIBRATE CONTROL HANDLES - Continued A. CALIBRATE Continued. 4. CALIBRATE RIGHT CONTROL HANDLE REVERSE THRESHOLD AND GAIN. a. Disconnect  electrical  connector  P34  (6)  (green and white wires) on right control handle (7) from electrical connector J34 (8). b. Insert  positive  digital  multimeter  lead  into  right control  handle  (7)  electrical  connector  P34  (6), terminal B. c. Insert     negative     digital     multimeter     lead     into electrical connector J34 (8), terminal B. d. Move  right  control  handle  (7)  0.75  in.  (19  mm) from neutral to reverse position. Use a combination square and the top of the handle as references. e. Digital  multimeter  should  read  between  6  to  8 mA. NOTE The     forward     threshold     potentiometer (FT) and the maximum forward threshold potentiometer interact on each other. An adjustment to either potentiometer     will     require     the     other setting to be checked. f. If  meter  reading  is  less  than  6  mA  or  greater than 8 mA, using a jeweler’s screwdriver, adjust right control handle (7) reverse threshold potentiometer (RT). To increase, turn adjustment screw  clockwise.  To  decrease  mA  reading,  turn adjustment screw counterclockwise. g. Move   right   control   handle   (7)   to   full   reverse position. h. Digital   multimeter   should   show   an   increasing output of 93 to 97 mA as right control handle (7) is moved away from center position. i. If  meter  reading  is  less  than  93  mA  or  greater than 97 mA, using a jeweler’s screwdriver, adjust right   control   handle   (7)   potentiometer   (RMAX) until   reading   between   93   mA   and   97   mA   is obtained.   To   increase,   turn   adjustment   screw clockwise. To decrease mA reading, turn adjustment screw counterclockwise. j. Return  right  control  handle  (7)  back  to  the  0.75 in. (19 mm) position as in step d. k. Digital multimeter should read 6 to 8 mA. I. If  meter  reading  is  less  than  6  mA  or  greater than 8 mA, using a jeweler’s screwdriver, adjust right  control  handle  (7)  threshold  potentiometer (RT).     To     increase,     turn     adjustment screw clockwise. To decrease mA reading, turn adjustment screw counterclockwise. m. If   any   adjustment   is   made,   recheck   the   full reverse position. n. Return   right   control   handle   (7)   to   the   center, neutral, position. o. Turn    paving    machine    ignition    to    OFF    when calibration is complete. Refer to TM 5-3895-373- 10. GO TO NEXT PAGE 7-74