Cummins ISX11.9 CM2250 – Service Manual Engine Noise Excessive – Turbocharger

Air intake or exhaust piping is contacting the chassis or cab

Inspect the air piping, chassis, and cab for contact points. Refer to Procedure 010-058 in Section 3 of the Operation and Maintenance Manual, ISX11.9 CM2250, Bulletin 2883444.

Air intake or exhaust leaks

Check for loose or damaged piping connections and missing pipe plugs. Check the turbocharger and exhaust manifold mounting. Refer to
Procedure 010-024 in Section 10
.

Air intake system restriction is above specification

Inspect the air intake system for restriction. Clean or replace the air filter and inlet piping as necessary. Refer to
Procedure 010-031 in Section 10
.

Exhaust system restriction

Check the exhaust system for restrictions. Refer to
Procedure 011-009 in Section 11
.

Turbocharger is worn or damaged

Check the turbocharger for damage. Measure the turbine and compressor wheel clearances. Refer to
Procedure 010-033 in Section 10
.

Turbocharger is not correct

Check the turbocharger part number and compare it to the Control Parts List (CPL), Bulletin 4021328. Replace the turbocharger if necessary. Refer to Procedure 010-033 in Section 10
.