TM 10-3930-653-14&P 5)  Set the parking brake, then depress the brake pedal as far as it will go. 6)  Shift the change lever to F or R Position. 7)  Depress the accelerator pedal as far as it will go.  (Drive wheel should not rotate). 8)  Measure the engine speed with the tachometer. CAUTION Do  not  stall  for  more  than  30  seconds.    If  stalling  is  continued  for  a  long  time,  the  oil  temperature  will  rapidly increase, resulting in damaged clutch or damaged seals. 4.  Diagnosis If the measured engine speed exceeds that specified in the list below, judge as follows: 1)  When much higher than specified value  .......................................Transmission trouble 2)  When much lower than specified value .........................................Engine trouble Stall speed H20PU240 2170 rpm 4-149