Home » ISX11.9 CM2250 - Service Manual » Cummins ISX11.9 CM2250 – Service Manual 010-031   Air Intake Restriction

Cummins ISX11.9 CM2250 – Service Manual 010-031   Air Intake Restriction

Table of Contents

Measure

Measure

TOC

Install a vacuum gauge or water manometer in the intake air piping.

NOTE: The gauge adapter must be installed at a 90-degree angle to the airflow in a straight section of pipe, 127 mm [5 in] before the turbocharger compressor inlet.

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Operate the engine at full throttle and maximum horsepower rpm with maximum load.

Record the reading on the gauge or manometer.

Use the following procedure for the correct specification. Refer to Procedure 018-019 in Section V.

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If the restriction exceeds specifications, complete the following:

  • Change or clean the air filter element. Refer to the OEM service manual.

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  • Inspect the intake air piping for damage. Check for collapsed and dented piping or elbows, and loose connections. Refer to the OEM service manual.

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Remove the test equipment.

If the malfunction resulted in coolant, oil, excessive fuel, or excessive black smoke entering the exhaust system, the aftertreatment system must be inspected. Refer to Procedure 014-013 in Section 14.

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Last Modified:  28-Jun-2010