TM  55-2840-241-23 c. Normal Shutdown. d. Emergency Shutdown. (1) Place the N1 throttle lever to the ground (1) Press the instrument power off switch and move  the  N1  throttle  lever  to  the  fuel  cutoff  (0°)  posi- idle  (30°)  position  and  the  governor  lever  to  the tion. minimum position. (2)   If   time   permits,   position   the   teat   eat (2) Stabilize at idle for two minutes. switches  and  controls  as  outlined  in  TM  55-4920-328- 13. (3)  Move  the  N1  throttle  lever  to  the  fuel cutoff  (0°)  position. 10-6.  Operating  Parameters. (4)  Shut  down  the  test  stand  es  outlined  in Observe  the  engine  operating  parameters  (limits) TM 55-4920-328-13. in table 10-1 during all phases of engine testing. Table 10-1. Operating Limits Item Limit Remarks N1  speed Rated Maximum   continuous Maximum   transient N2 speed Rated Maximum   continuous Takeoff Flight autorotation Maximum   transient Takeoff Flight autorotation 100% *105% *106% Permitted for 15 seconds maximum. 100% See note. *101% *105% See note. *103% Permitted for 15 seconds maximum. *110% Permitted  for  15  seconds  maximum. NOTE Maximum  continuous  and  maximum  transient speeds  vary  linearly  from  flight  autorotation  to takeoff.  (Refer  to  fig.  10-1.1.)  Send  the  engine  to repair/overhaul if limit is exceeded. *Send  the  engine  to  repair/overhaul  if  limit  is  exceeded. Output   Shaft   Torque   Limit Torque Pressure Percent lb ft PSI OH-58C 393 109 146* 384 104 144* 323 88 120 *   Not   readable   on   OH-58C   Torquemeter   instrument. GPTOT Maximum   takeoff 1490° F (810° C) Maximum   continuous 1360° F (738° C) Maximum   transient 1490-1550° F (810-843° C) Maximum  starting 1490-1700° F (810-927° C) NOTE Time Limit 10  sec 30  min continuous Permitted  for  30  minutes  maximum. Permitted for continuous operation. Permitted  for  6  seconds  maximum. Permitted  for  10  seconds  maximum. If  temperature  limits  are  exceeded,  Inspect  the turbine as outlined in Chapter 12. 10- 4 Change  14