3320 hydraulic filter cover leak

[WarrenInDe]

I thought it would be easy to find an answer but a search didn't return anything.

My 2005 3320 has had a slow leak at the hydraulic pump filter cover since I did my first fluid change. I nursed it along until I couldn't stand it any more and I got farther into my change interval. Finally did another change with new fluid, filter and cover o-ring. The parts guy said the book showed 2 o-rings, which I bought, one on either side of the filter.

There was one by the screw threads but I couldn't find the second one. It is a large o-ring and would not fit anything inside the filter ***'y. So I lubed up the cover o-ring with some hydro fluid and put it all back together.

I ran it a little and all seemed good. Came back the next evening and a brand new puddle coming from the cover again.

What am I missing? Is there a trick to this? Is there really a second o-ring in there somewhere or was there some kind of design change?

Thanks,
Warren

 

[jd670]

If your talking about the suction filter under the tractor by the rear wheels, the second o-ring goes inside the screw on cap or cover.

 

[Tx Jim]

parts key 2 LVU17893 O-Ring
parts key 3 LVU19369 Sealing Ring
parts key 5 LVU17893 O-Ring(same as parts key 2)

 

[WarrenInDe]

Thanks for the replies.
The one under the cap, key 2 in Jim's diagram is the o-ring I replaced. I now see that the second o-ring I got, which had the same part number doesn't go in the filter cavity. It looks like it goes between the body and the tractor. I don't think it's leaking there, I'm pretty sure it's at the cap of the suction pump filter.

Warren