OutdoorKing Repair Forum Forums Repairs and Maintenance Questions On Ride On Mowers Questions Ride On Mower Transmissions ZTR Hydro help

I recently picked up a wreck of a machine.

It has a pair of upside down mounted Eaton 771 A & B hydros in it.
The wheels will not turn.

Is there a bypass lockout??

I would like to be able to move it about. The wheels will go back and forth a bit, its not the park brake, it is not connected but the levers does move and it will lock the wheels up solid.

The oil reservoir is low, below the pickup, I would like to know what needs to be done so that I do not damage the hydros when I have a crack at getting the motor running.
So I would like to, free them so they will bypass/free wheel.
Change the filers and oil.

Before I start the motor.
Can anyone help??

Have a look at....
http://www.eaton.com/ecm/groups/public/@pub/@eaton/@hyd/documents/content/pll_1620.pdf

Yeah thanks, on a hunch I went out and worked it out myself.
Then I got onto that and it all made sense after the fact.



That PDF does not say what exact oil to use, can anyone tell me what type/grade??

I've replied to the oil question in your other thread, Bob. It is mainly a matter of figuring out whether Eaton is one of the hydraulic equipment makers who is happy with the use of engine oil in their light duty hydrostatic transmissions, which is a popular approach. Remember though, do not mix synthetic hydraulic fluid with engine oil. You might find this interesting:
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1840482

Personally I'm used to being told to use ordinary ATF in things like backhoes, front loaders etc, but engine oil in tractor PTO hydraulics. However, light duty hydrostatics are quite a bit flimsier than industrial equipment like that.

Thanks Grumpy. Been busy with other stuff, waiting on the carb, will get back onto this one soon.