Engine Run-In Procedure Without
Dynamometer (8-08)
On-Highway
Caution: Refer to General Information and General En-
gine Test Specifications and Procedures at the front of
this section before operating the engine to avoid internal
component damage.
Operate the vehicle pulling heaviest available trailer al-
lowed for the first 80 to 160 km [50 to 100 miles] after
rebuild. Operate vehicle in highest gear possible within
the normal operating RPM range of the engine. It is nec-
essary to operate the engine at or near full throttle at 75
percent to 85 percent of maximum horsepower RPM in-
dicated on the data plate.
NOTE: Do not idle the engine for more than 5 minutes at any
one time during the first 160 km [100 miles] of operation.
Off-Highway
Caution: Refer to General Information and General En-
gine Test Specifications and Procedures 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.
NOTE: Do not idle the engine for more than 5 minutes at any
one time during the first 3 hours of operation after rebuild.
Engine Testing Engine Run-In Procedure Without Dynamometer (8-08)
N14 Page 8-53
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