Weichai America Corp.
Revision: October 2018 10
New Engine Break-in Procedures
The way any heavy duty industrial gas engine is operated during the first 4 hours of service, will
have a major impact on how well that engine will perform, how much oil it will consume and how
long it will last. The engines moving parts are closely fitted for long service, and even though all
Weichai America WP13 Gas Engines are run before they leave the factory, an additional period
may be required before uniform oil films are established between all mating parts. The main
purpose of break-in is to seat the compression rings to the cylinder walls.
It is recommended that during the first 4 hours of service:
1. Operate at one-half to three quarters load. Do not operate at maximum rated load for
more than five (5) minutes at a time.
2. Do not run the engine unloaded for long periods as this will cause cylinder walls to
“Glaze” before the piston rings seat properly and result in excessive lubricating oil
consumption.
Engine Loading
The gas engines are designed to operate continuously at industry accepted high ratings and to
provide optimum service life. It is not recommended to operate a gas engine continuously at low
load levels. A general rule used for most low emission gas engines is to operate at 60% load or
above.
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
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