TM 9-2815-225-34&P 3-92.  ENGINE DYNAMOMETER TESTING (Contd) LOCATION/ITEM ACTION REMARKS e.  Final Check (Contd) 16.     Orifice adapter (5) and Remove from air compressor air compressor (7) relief valve (6). 17.     Blow-by measuring tool (4) Remove from engine (8) and and manometer install filler cap 1). 18.     Breather tube (2) Unplug. NOTE At each phase, record crankcase pressure (blow-by), engine speed, and load at one minute intervals.    Watch  for  increases  or  wide  shifts  in  blow-by  pressure.    If  sudden  increase happens, or if it is more than 12" H2O, do the preceding test over again and run engine 15 more minutes.  When blow-by is OK, do next test.  If not OK, stop the test and find reason for too much blow-by.  Check engine for fuel, oil, water, air, or exhaust leaks after each test and fix as needed. Phase 1 - 25% HP @ 1200 RPM @ 160 water temperature. Phase 2 - 40% HP @ 1200 RPM Phase 3 - 65% HP @ 1600 RPM Phase 4 - 100% HP @ Nominal torque peak RPM *(1200) RPM Power Check - 96-100% HP @ 1600 RPM *100 RPM below torque peak RPM FOLLOW-ON TASK: Perform on-engine fuel pump adjustment (para. 3-93). Table 3-1.  Dynamometer Test Chart ENGINE    HP @ RPM RATED HP @ RPM 500 FT-ALT FUEL RATE LB/HR AIR MANIFOLD PRESSURE IN/HG ALTITUDE MAX. HP ALT. CRANKCASE PRESSURE W/TURBO T46B PHASE 1 TO 160f HP @ RPM PHASE 2 2 MIN. HP @ RPM PHASE 3 5 MIN. HP @ RPM PHASE 4 4 MIN. HP @ RPM POWER CHECK 4 MIN. HP @ RPM NTC 400 400 @ 2100 400 @ 2100 139-145 39/47 12,000 12" H2O 100 @ 1200 160 @ 1200 260 @ 1600 Full Load @ 1200 384 @ 2100 3-689