TM   9-2815   -202-34 h. l n i. J k. 1. . WARNING Avoid contact with hot manifolds, pulleys, avoid  personal  injury. Wear  proper  ear  protection  when  running engine  can  cause  hearing  loss  or  injury. and  other  moving  parts  to engine.  Noise  volume  of Protective  turbocharger  air  inlet  shield  must  be  installed  prior  to  doing maintenance  when  engine  is  running  and  air  inlet  has  been  removed. Contact  with  rotating  blades  will  cause  injury  to  personnel. CAUTION Run engine in clean area when air intake  ducting is removed. Dirt, dust, and particles  in  unfiltered  air  can  enter  engine  and  damage  parts  or  cause  mechanical failure. If crankcase pressure is excessively high, this pressure may exceed the capacity of manometer.  To  prevent  blowing  liquid  out  of  manometer,  discontinue  test  if  liquid level  approaches  limits  of  manometer  scale  by  closing  manometer  tube  connector. Start engine and operate at 1800  RPM FULL LOAD.  Slowly open manometer tube connector (1) attached to hose (6), while carefully observing liquid level in manometer tube. l l l NOTE A manometer measurement is the sum of the displacements from zero of the two columns of liquid. The value expressed is in inches of water. For models 7083-7391, 7083-7395, and 7083-7396, measurements must not exceed 4.5 inches of water at 2300 RPM, FULL LOAD. For the 7083-7398 and 7083-7399, measurements must not exceed 1.5 inches of water at 2300 RPM, FULL LOAD. When  manometer  tube  connector  (1)  has  been  opened  one  full  turn,  measure  crankcase  pressure on  manometer  scale. Move governor stop lever to NO-FUEL position to stop engine. Disconnect  hose  (6)  and  remove  adaptor  (5). Install oil level gage rod and tube. END   OF   TASK Change  1 8-43