CUMMINS N14 Dokumentacja Pobierz pdf (Strona 475)

100

101

Charge Air Cooler Restriction

Measure the intake pressure drop across the charge air

cooler.

This test can be done with a mercury manometer or two

separate gauges, Part No. ST-1273. If two gauges are

being used, calibrate both gauges on a common pressure

source at 206 kPa [30 PSI] to ensure consistency.

Install one pressure gauge, Part No. ST-1273, in the

fitting in the turbocharger compressor outlet elbow. In-

stall the other pressure gauge in the fitting in the intake

manifold.

Observe the reading on the gauges. Pressure drop must

not be greater than:

102 mm Hg [4.0 in. Hg]

14 kPa [2.0 psi]

NOTE: When measuring the pressure drop, operate a dy-

namometer at the rpm that delivers the maximum horse-

power of engine tested. Engine speed will be 1600-1700 rpm

on most engines.

Intake Air Restriction

Measure the inlet air restriction. Install the vacuum gauge,

Part No. ST-434, or a manometer in the intake air piping.

NOTE: The gauge adapter must be installed at a 90 degree

angle to the air flow in a straight section of pipe at a minimum

of one pipe diameter before the turbocharger.

Engine Testing General Test Procedure - Chassis Dynamometer (14-05)

N14 Page 14-35

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Komentarze do niniejszej Instrukcji

Jesus Morales 03 Apr 2025 | 23:07:31

Perfect..

CUMMINS N14 Dokumentacja Strona 475

Komentarze do niniejszej Instrukcji