Blog
15
Sep
John Deere Heater Hose failures
Posted at 15:23 by James Roberts

We have been notified by the UK supplier of John Deere engines of a potential hose fault located on JU4H and JU6H engines

''The subject hose is a silicone hose that is made of an all light blue silicone rubber construction and should not be confused with the The subject hose may be susceptible to improper coolant mixtures that may aggressively attack the hose.

Thereby the hose may delaminate in the inner layers or may become brittle and ultimately failwhich can lead to coolant loss and the potential for engine damage or failure.''

Additionally, they recommend that all rubber hoses be replaced every 2 years under normaloperation and conditions.

 

If during the weekly test and inspection routine a hose is found to be

brittle, inflexible or shows signs of swelling, aging or cracking, the hose should be replaced immediately

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