TM  10-3930-643-34 TRANSMISSION  TROUBLESHOOTING  AND  MAINTENANCE. 6-2. Transmission   Troubleshooting. MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION k. CLUTCH PRESSURE CHECK AT FULL POWER STALL. When performing test with vehicle at full power stall, apply brakes before engaging transmission and clear all personnel from the immediate  area. Failure to follow this procedure could result in SEVERE INJURY and DEATH. During full power stall,   do not engage steering system, do not exceed 15 seconds per stall check and do not allow torque converter to exceed normal  operating  temperature. NOTE Full stall is the speed of engine with throttle at maximum, vehicle in highest gear with brakes applied and hydraulic control valve activated  to  demand  maximum  hydraulic  relief  pressure. Step 1. Locate pressure tap at right side center of vehicle, under operator’s  compartment. 6-9