Weichai America Corp.
Revision: August 2019 20
B. Inspect drain plug washer (replace if necessary) and clean plug seating surface.
C. Inspect magnetic plug for iron and ferrous material. If this exists, consider an oil
analysis to determine source of debris.
D. Reinstall drain plug and tighten securely.
E. Remove the old filters by the filter wrench. Wipe filter base clean. Then apply a
thin coat of motor oil to o- ring on new oil filter(s).
F. Install oil filter. Tighten filter until the rubber gasket contacts base. Tighten
additional 3/4 to 1 turn to seal.
G. Using the recommended grade of oil, fill crankcase with specified quantity.
H. Fill the grease cup of the signal generator with lithium grease (NLGI Gr. 2).
I. Operate engine for five (5) minutes. Check for leaks at filter base and oil pan drain
plug during operation.
J. Shut down engine and wait five (5) minutes. Check engine oil level and adjust to
proper level if necessary.
Drain plug
Oil refill
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