com leaking into diff.

Jereme L

New User
Hi i have a 730 serial#8270328 model#741c thats leaking a lot of caseomatic fluid into the differential we have always used type (A) fluid in the caseomatic and has always been a very strong transmission till this huge leak started. any ideas? I have the feeling its gonna have to be split in half
 
I have an 830 COM that is doing the same thing, it started about 50 hours after I changed all the fluids to hy-tran ultra from TCH. It will empty the case-o-matic compartment into the rear end in about two and a half hours or so. I did a temproary or maybe a permanent fix on it today, drilled and tapped the drain plug on the case-o-matic compartment to 1/4 inch pipe and run a hyd. hose from one of the remotes to it, now I can just transfer fluid back with a pull of the lever. My case-o-matic works perfect and the pressure sits right on 180. Looking through my service manual there is a seal and 0-ring on the input or range shaft of the transmission, i'm thinking on mine that seal is bad, or a crack in the case or who knows what till it comes apart. To repair it would mean a split and remove the case-o-matic, top of transmission cover off and see what things look like and go from there, I may tackle mine this Winter. Good luck with yours.
 

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