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ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 010-031   Air Intake Restriction

Table of Contents

Measure

Measure

 TOC

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

The gauge adapter must be installed at a 90-degree angle to the airflow in a straight section of pipe, one pipe diameter before the turbocharger.

NOTE: On marine applications, remove the pop-up flag restriction gauge from the base of the air filter and install the vacuum gauge or water manometer.

SMALL | MEDIUM | LARGE


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

Record the data on the gauge or manometer.

Inlet Air Restriction (All Applications Except Marine)
cm H2O
  
in H2O
63.5
MAX
25.0

Intake Air Restriction (Marine Applications)
 
cm H2O
  
in H2O
Dirty Filter
63.5
MAX
25.0
Clean Filter
38.1
MAX
15.0

SMALL | MEDIUM | LARGE
   


If restriction exceeds specifications, replace or clean the air filter element. Refer to the OEM service manual.

SMALL | MEDIUM | LARGE
   


Inspect the intake piping for damage. Refer to the OEM service manual.

Remove the test equipment.

SMALL | MEDIUM | LARGE
Last Modified:  25-Oct-2009
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