TM 5-2420-230-24-2
Air Intake Restriction (010-031)
B3.9 and B5.9 Series Engines
Page 10-28
Section 10 - Air Intake System - Group 10
Operate the engine at full throttle and rated rpm with maxi-
mum load.
Record the data on the gauge or manometer.
Inlet Air Restriction
mm H2O
in H2O
Turbocharged
63.5
MAX
2.5
Naturally Aspirated
50.8
MAX
2
NOTE: The illustration shows the measurement in centi-
meters instead of millimeters.
If restriction exceeds specifications:
Replace or clean the air filter element. Refer to the
equipment manufacturer's instructions.
Inspect the intake piping for damage. Refer to the
equipment manufacturer's repair instructions.
Remove the test equipment.
L-1152
