I found one of the fuel sediment bowls I acquired had that problem, can't remember if it was one from a running Cub or a parts piece. I also replaced it with a new one that I had on hand. I really think it was because the cork was really aged. Cork normally doesn't shrink fast - not sure why it would do that. The only thing that I can think of is ethanol fuel - water gets absorbed into the fuel which in turn absorbs into the cork - and the cork may shrink as it dries out when sitting too long. But that sounds really off-the-wall.
I don't think that shrinkage is a huge worry at all though.
Boss seems to recommend rubber gaskets IIRC from some of his posts. Don't know if that will lessen the shrinkage risk.
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I've seen the same. Cork shrinks when it dries, always has. I've seen new cork gaskets that have shrunk too much to be able to use. Back in the day, some gasket storage units had water trays. I suppose nowdays they just expect inventory to turn fast enough to avoid a problem.
John *.?-!.* cub owner wrote:Most of the time a shrunk gasket can be brought back to size by soaking in water.
Bought a Cub that had the coolant drained and had been sitting for quite some time. Added water and leaked everywhere, so I figured a new radiator was in order, well, the longer it sat, the less it leaked finally decided the cork gasket had rehydrated
Just for the Info-- The gasket that was in the 1949 Cub that we have restored is a Rubber type. I actually put a new sediment bowl on the tank when we redid that and it leaked so I tried the old rubber gasket that was in the tractor for at least 21 years (parked) and it is fine.. I will Never Doubt Boss Hog...... Sammy
Sammy and Donna "Never Give UP!" 49 Farmall Cub 193 Plow half Disc Field Cultivator and Full Cultivator Set
Joined: Sat May 05, 2012 10:36 pm
Location: South Hill, VA
Zip Code: 23970
Tractors Owned: 1949 Cub with full cultivators
2014 New Holland Workmaster 35 with loader, bush hog, rotary tiller and skid steer attachments
I buy some of my tractor parts thru a supply/repair shop here in Virginia, "Tractor Care". The parts guys there are saying that some cork gaskets (carburator) do not like ethenol gas. It causes them to deform and come apart. So Beware!
Joined: Mon Aug 02, 2010 1:05 pm
Location: Rockingham County, VA
Zip Code: 22802
Tractors Owned: Cletrac HG-42 1945 Oliver HG-68 1946 M-F MF50 1959 IH 184 Loboy 1977 Farmall FCub 1949
I put a new sediment bowl on a tractor four months ago. It has been under a tarp since that time.I decided yesterday to get the tractor running again.I found the same problem that this post is about.I smelled gas and looked and the dang bowl was leaking.I robbed a gasket from an old bowl and no leaks for now.I hate to work on something to work on something,but that is normal lately...