SERVICE MANUAL CALIBRATION Section 5 IMPORTANT INSTALL  DELIVERY  VALVE    SPRING AND WASHER, IF REMOVED. 13. Add   clean   engine   oil   to   injection   pump   sump (one pint).  Set feed pump pressure to 2 PSI. Check     Governor Preliminary Cut-Off (Governor Internal Adjustment) 14. With    control    lever    assembly    in    full    forward position   and   hi-idle   stop   screw   removed,   rack position should be 20.0 21.0 mm (.787" .827") as shown  on  dial  indicator  prior  to  start.    Operate calibrating  stand  at  specified  RPM  and  observe rack  position.    Rack  position  should  be  8.0  mm (.315") as shown on dial indicator. If   preliminary   governor   cut-off   does   not   come into effect within specifications, corrective adjustments  inside  governor  housing  are  made as follows: a. Remove   seal   wire   and   governor   access plug from side of governor housing. b. Check  control  rack  and  governor  assembly for binding and correct if needed. c. Adjust  cut-off  by  increasing  or  decreasing pre-tension    of    governor    weight    springs. Use  KDEP  2989  governor  spring  adjusting wrench    on    cylindrical    nut    to    make    this adjustment (Figure 6). To   raise   governor   cut-off,   pre-tension   is increased; to lower governor cut-off, pretension   is   decreased.      "Cam"   nut   is selflocking  but  must  be  turned  1/4  turns  to assure its being in locked position.  Preload of governor springs should range from 4 to 10 quarter (1/4) turns (clicks) from flush on each side.  Alter preload range as required. d. Spring   set   may   be   one-half   turn   out   of balance  with  opposite  set  if  necessary  to obtain desired governor cut-off. Figure 6.  Making Preliminary Governor Cut-Off Adjustment 1. Adjusting Wrench KDEP 2989 2. Governor Cut-Off Adjusting Nut e. If   specified   governor   cut-off   can   not   be obtained     by     adjusting     preload,     remove adjusting  nut,  spring  seat  and  intermediate spring.  Add or remove intermediate spring shims  on  both  sides  to  achieve  specified control rack position and recheck (must end up   with   same   amount   of   shims   on   each side). f. If    specified    governor    cutoff     cannot     be obtained by steps c, d or e, recheck "slider to housing" and "S-plate" basic dimensions. Check Governor Cut-Off (Governor External Adjustment) 15. Install hi-idle stop screw and operate test stand, with  control  lever  assembly  in  full  load  position (fully  forward),  at  specified  RPM.    Check  rack setting    on    dial    indicator    and    compare    with specifications given on CALIBRATION CHART. If  rack  is  not  positioned  within  specified  limits, make hi-idle adjustments (Figure 7) as follows: CGES-375 Printed in United States of America Page 4