C145 eaton 1100 leak

[mark in ny 27]

So I'm getting ready to pull the lines off and disconnect the lift to paint and put back on the frame and I notice its leaking. Now I had it moving under a weak motor for a bit a month ago and have let it sit since. It seems as if the case halves are leaking. How hard is the main gasket in there to replace as far as what else has to get taken apart to get to that gasket? Tough telling from the pictures but everything got degreased and it's only wet on the bottom. Thanks 

[BOB ELLISON 2,981]

Clean it really good then check it.  I had a wheel seal leak and I thought it was leaking from the gasket that holds the 2 half together also. If it's the gasket that holds the half together try tighting the bolts but don't over torque. 

[953 nut 55,771]

Could also be at one of the fittings for the lift hoses.  Clean it very well, dry it and leave it siting a few days with some clean paper or cardboard under it. If there are no leaks when it hasn't been operated then probably not the gasket. Run it around the block and park it again to see where it is running down from.

[JCM 9,388]

Sometimes the brake drum shaft seal could also be the culprit or spillage from refilling the transaxle and the oil coming back up the dipstick tube because of the air trying to escape while refilling. As Bob said clean it and keep checking before you decide to split the case halves. Some of the older 1100's require 2 gaskets, part #  108312

[JoeM 7,874]

I don't have a video of a hydro case split but do have one from a WH Toro xi axle change. It is similar.  I used a hallow core concrete block in to hold the rear end vertically while disassembly. Some folks cut holes in the their work benches or have fixtures. I have lower back issues and have to be seated if working for any length of time so I keep the work close to the ground. 

In any case if you must change the gasket, figure on at least one axle seal. You will have to remove one hub to slide the case off of the axle and for all it is worth, changing the seal when the hub is off is good insurance. 

Others may add to it but this is a general idea.

 

[Goldnboy 938]

I had a leaking plug that had a small pin hole, though it was the pump to transaxle  gasket 

[mark in ny 27]

Well I noticed the leak  as I went to go drain the fluid to disconnect the lift lines to remove them out of the dash. So right now there isnt any fluid in the rear end. I'm thinking I may just dump a quart or 2 in there to see if it is that gasket. Nothing above that bottom bolt was wet, it was only that underside from the bolt head and below. After doing the research and reading your guys responses it seems as if that gasket would be rare to leak itself.