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January 14, 2016 Service bulletin

Noise from the cam chest area possibly accompanied by milky engine oil

Harley-Davidson technical service bulletin TT451 for 2007 Harley-Davidson Flhtcu, 2007 Harley-Davidson FLHX and 2007 Harley-Davidson Flhtc and others.

Bulletin number
TT451
Component
Engine
Summary
Noise from the cam chest area possibly accompanied by milky engine oil. Moisture can cause slight swelling in the tensioner causing it to stick in the housing. A vehicle that makes repeated short trips can have this condition because the engine does not reach normal operating temperatures, allowing condensation and moisture to build up in the engine oil.

Owners of these vehicles have filed 82 complaints in the engine category.

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