
Operate the engine at maximum horsepower RPM and
Advertised Horsepower.
Observe the reading on the gauge or manometer.
NOTE: Restriction must not exceed 635 mm H
2
0 [25 inches
H
2
0].
Exhaust Air Restriction
Measure the exhaust air restriction. Install the vacuum
gauge, Part No. ST-1273, or a manometer in the exhaust
air piping.
NOTE: The gauge adapter must be installed near the turbo-
charger in a straight section of pipe at the turbine outlet.
Operate the engine at maximum horsepower RPM and
advertised horsepower.
Observe the gauge or manometer.
NOTE: Pressure must not exceed 75 mm Hg [3.0 inches
Hg].
Engine Blowby
Measure the engine crankcase pressure.
Use blowby checking tool, Part No. 3375150, and water
manometer, Part No. ST-1111-3.
General Test Procedure - Chassis Dynamometer (14-05) Engine Testing
N14Page 14-36
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