Hydro transmission may have been towed
 

I bought a 1650 that the PO towed about 20-30 feet before I got there. From what I've read it looks like the damage towing them causes doesn't happen until the engine is started and the hydro input shaft is spun. Is there a way to prevent them from self destructing by tearing into them and fixing whatever goes wrong before they fly apart, or should I not worry about it being towed that distance. This is a 1650 ported transmission that has manual relief valves on top that are stuck.

My 149 was towed several hundered yards without a motor when I purchase it. The motor was rebuilt and haven't had a problem since. That was 9 years ago. My 149 has manual release valves.

If it did anything, Its already done.
You will know when you start it up. It may be fine if he didn't tow it to fast.
If it still rolls there is a good chance you are alright.
All the ones i have seen that exploded from towing wouldn't allow the rear to spin.
Engine still started and run alright but tractor wouldn't move.
Don't ask how i know :bash2:

The reason I'm worried is because this rear end is replacing one that locked up. On it the input shaft from the engine seized. The engine ran about a minute and then died. I found out the transmission input shaft seized up. I had towed it a little but no more than 50 feet. But this was the first time I had it running so it might have had an existing problem when I bought it. But it seems to have acted different because the input froze and I can still roll it. I have another question though. This 1650 rear end has ports and I don't have the rest of my hydraulics ready to hook up yet. Can I cap the ports off and run it or will it build up too much pressure? I know you can add ports to some trannys, but I don't know about taking them out. Thanks for the help.

Towing a cub a couple of hundreds yards would be NO problem. Towing them a mile might be a problem.
:IH Trusted Hand:

Don't cap them off, just make up a short horse shoe Hyd. line and connect them together,you will not build any pressure that way.
If you cap them off it will act like you were holding the lift lever constantly,causing the pressure relief valve to go to max pressure.

Yeah,
I don't think dragging it 50 feet will hurt at all. These hydros are bullet proof. Now if they dragged it behind a truck 500 feet doing about 15 MPH, that's a different story. You said the manual relief valves are stuck down right? Then you shouldn't have anything to worry about. The manual valves would have been pressed down by the manual lever to tow and they are already down so no harm.:TwoCents:

Is it still bad to tow a hydro if the manual release buttons are down?

They are suppose to be down when towing or pushing.