1550 hydra drive

Chief 83

Member
Not sure that's exactly what its called however it's leaking...There is a small external U shaped tube with fitting one either end like brake line fittings. The fitting closest to the engine screws in to a
brass 90 degree fitting that in turn appears to be threaded into a larger fitting that is part of the hydraulic block. That fitting appears to be about 3/4 around and that is where it it leaking. I've tried
to tighten the brass 90 degree fitting and will probably damage it if I try to go either way with it. Still not sure what/how to deal with the part that is actually leaking. I have looked at the repair manual
and it doesn't really show what I'm dealing with. It appears that you have to pull the motor to take this hydraulic unit off to get inside. hoping there is an external solution as I'm not really keen on
pulling the motor. Anybody have a solution?
 
Mine leaks there too. The round piece goes through the cover and is part of what is usually called the 'banjo' and sealed with an O-ring. The side cover needs to come off to replace it. I tried forcing some silicone in there but it didn't do much good. Mr. Schweibert once told me it's possible to get the cover off by pulling out the engine mounting bolts and shifting it to the left but I haven't tried it. I have to get to it now because the sprocket nut came loose on me twice this year and the rear seal leaks as well.
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Go to you tube and search Chris Losey. He has a couple videos on repairing Hydra Power Drives along with multiple Oliver repair videos. Handy as a shirt pocket
 

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