Install the other end of the manometer to the 1/8 inch pipe
tap in the intake manifold.
Operate the engine at the maximum advertised horse-
power and correlating RPM. Record the readings on the
manometer.
If the differential pressure is greater than 102 mm Hg [4
in Hg], check the CAC and associated piping for plug-
ging. Clean or replace if necessary.
Optional Method
Obtain two (2) pressure gauges, Part No. ST-1273. Check
both gauges on the same pressure source at 206 kPa [30
psi] to ensure consistency.
Install pressure gauge, Part No. ST-1273, to the 1/8 inch
fitting in the turbocharger compressor outlet.
Install another pressure gauge, Part No. ST-1273, in the
intake manifold.
Charge Air Cooler (3-11) Section 3 - Combustion Air System
N14Page 3-28
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