Cummins ISX11.9 CM2250 – Service Manual 014-004   Engine Run-in (Without Dynamometer)

WARNING  Refer to Engine Testing – General Information and Specifications- Engine Testing at the front of this section before operating the engine to avoid internal component damage.

Operate the vehicle pulling the heaviest available trailer allowed for the first 80 to 160 Km [50 to 100 mi] after rebuild. Operate the vehicle in the highest gear possible within the normal operating rpm range of the engine. It will be necessary to operate the engine at or near full throttle at 75 to 85 percent of maximum horsepower rpm indicated on the dataplate.

Do not idle the engine for more than 5 minutes at any one time during the first 160 Km [100 mi] of operation.

WARNING  Refer to Engine Testing – General Information and Specifications- Engine Testing at the front of this section before operating the engine to avoid internal component damage.

Operate the engine under the highest load possible at full throttle within the normal operating rpm range of the engine for the first 3 hours of operation after rebuild.

Do not idle the engine for more than 5 minutes at any one time during the first 3 hours of operation after a rebuild.