The first Mr Gasket pump I installed - similar vane pump to the Carter - failed due to air ingestion which allwed the vanes to sieze and burn up the motor. Air ingestion was caused by the (supplied) filter which screwed into the inlet side of the pump. It failed by the seam where the filter body is swaged/crimped onto the threaded filter outlet fitting opening and allowing air into the inlet of the pump. When I installed the new pumps, I discarded the supplied filters made by the heathen chinee and replaced them with indentical ones made by Wix. They may also be chinese, but they're heavier and the swaged/crimped seam looks better. So far - 5K miles - they've worked. Note that, if the hoses feeding the filter inlet are not supported, they can vibrate and, given the shape of the filter, loosen the seam in time.

A design flaw i my opinion, which could be solved by using a male and female threaded push on hose adaptor so the filter could be fitted with flexible hose at each end rather than being hard supported at only the pump end. If either of my filters should begin to leak at the seam, that's what I'd do. I propose to point this out to the new owner of the coach, whomever s/he may be.

--johnny