cub oil filter top question

ericlb

Well-known Member
I need some info please, my cub oil filter top started leaking around the bolt that goes thru it to fasten it to the housing, I looked at the diagram to see if there was a washer that was supposed to be there, but none showed to be, so I ordered a new top. well, a used one, this top was taken off a running cub, but its top is dished up, mine is dished down, I ordered it because there is a possibility that mine has the wrong one on it, but I got to thinking, the top also located the oil filter doesn't it? what filter do I need to use with the dished up filter top? and is there or is there not supposed to be a copper washer or o ring between the bolt head and the housing top? next I don't see any tractor parts on the left corner here, what happened, or is it just me?
 
Someone tightened it too much in the past causing the top to be "dished in". Replace the top or carefully pound it back to original shape.
Should be a copper washer under the bolt head if memory serves me.
 
My local Napa has those copper washers. Some have rubber on one side. I dont think I put one on my Cub, but my 154 needed one, and had been missing it for a laot of years, so the hole in the top had worn a little big. I put one of the ones with rubber on it and has been fine since.
 
You already have 3 good answers, but to add a little more:

Cub oil filters were redesigned over the years. So you could pull out an old one that looks different then the new ones. However, they are all the same overall size and interchange.

There were 2 designs of the top that goes over the filter. The early one was a die cast part, slightly dished up. It was easily deformed (until it dished down). After it was bent, it was very difficult to keep from leaking. The second design was heavy stamped steel. It had more of a cone shape to the center. It was much more resistant to bending when overtightened. Both designs interchange, using the same center bolt and filter.

By the way, there were 2 center bolts as well. It changed when the engine block went from "R7" to "R8". They do not interchange into the wrong block.

You need a gasket on the center bolt. Some people have used the washer/o-ring type seal you find on some oil pan drain plugs. A generic one of the proper size can be found at most auto parts stores. I haven't resorted to that myself.

(Edited because John M posted while I was typing.)
 

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