Hydro unit issues

OldCubby · #1 09-08-2014, 08:49 PM

I drained my hydro oil, cleaned out the axle housing, installed a new oil filter and refilled the unit. I start up the engine and I try to accel and the forward takes about 1-2" before it starts to move. But when I try to go in reverse, it takes all of the travel to barely move it backwards. The one thing I wanted to try but didn't get to do tonight was, take out the relief valves and switch them to see if the problem follows the valves. But, if it doesn't, I am at a loss as to what it could be. Any idea?

J-Mech · #2 09-08-2014, 08:55 PM

What filter did you use?

It's not the relief valves.

OldCubby · #3 09-08-2014, 08:58 PM

Quote:

Originally Posted by J-Mech

What filter did you use?

It's not the relief valves.

I read on here that the Napa (WIX) 1410 filter is what I needed.

J-Mech · #4 09-08-2014, 09:06 PM

That is correct.

Lets just get the standard questions out of the way......

Did you make sure the old flter gasket came off of the unit?
Did you try jacking it up and running it?
Did you try pushing the tractor a little while moving the lever?
It's full of oil right? You used some sort of hy-tran or 30wt oil? Not gear oil right?

Not uncommon for a hydro not to want to move after an oil change. Usually you can roll it a little while moving the lever and it will go. Also been a common problem with members here that after a flush the residual "gunk" either plugs the filter. Or it has also happened, that a piece of rag used to wipe out the rear got left inside and plugged the filter.

darkminion_17 · #5 09-08-2014, 09:06 PM

What hydo oil did you get?

OldCubby · #6 09-08-2014, 09:13 PM

Quote:

Originally Posted by J-Mech

That is correct.

Lets just get the standard questions out of the way......

Did you make sure the old flter gasket came off of the unit?
Did you try jacking it up and running it?
Did you try pushing the tractor a little while moving the lever?
It's full of oil right? You used some sort of hy-tran or 30wt oil? Not gear oil right?

Not uncommon for a hydro not to want to move after an oil change. Usually you can roll it a little while moving the lever and it will go. Also been a common problem with members here that after a flush the residual "gunk" either plugs the filter. Or it has also happened, that a piece of rag used to wipe out the rear got left inside and plugged the filter.

Yep, old gasket came off just fine.

I didn't try jacking it up and running.

I didn't try moving it a little while moving the lever.....can I get alittle bit clear directions for this move. Much appreciated.

Yes, its full of Hytran oil I picked up from dealer.

I'll run through the steps of jacking up the tractor and moving it while moving the lever. If none of that works, I'll try replacing the filter again, just in case it picked up more junk.....although...I must ask....wouldn't a plugged filter cause that same issue forward as I have in reverse?

J-Mech · #7 09-08-2014, 09:22 PM

Quote:

Originally Posted by OldCubby

I didn't try moving it a little while moving the lever.....can I get alittle bit clear directions for this move. Much appreciated.

Just start the machine, stand next to it, hand on the control lever, move it to the forward position JUST A LITTLE (you don't want it to run away from you if it "takes hold") give it a little push. Usually you just roll forward about a foot and it will take hold. You can jack up the machine and try this. Although, you can't roll the hydro with the wheels in the air. It will just roll one tire forward and the other backwards through the diff. But since it moves some on it's own, it may work. It either has air in it, or the filter is plugged.

Quote:

Originally Posted by OldCubby

I must ask....wouldn't a plugged filter cause that same issue forward as I have in reverse?

Not necessarily. The swashplate can move farther in the forward position than it can in the reverse position.

OldCubby · #8 09-08-2014, 09:26 PM

Quote:

Originally Posted by J-Mech

Just start the machine, stand next to it, hand on the control lever, move it to the forward position JUST A LITTLE (you don't want it to run away from you if it "takes hold") give it a little push. Usually you just roll forward about a foot and it will take hold.

Not necessarily. The swashplate can move farther in the forward position than it can in the reverse position.

ok, I'll give this a shot tomorrow night and report back.

Thanks Jonathan

J-Mech · #9 09-08-2014, 10:12 PM

Ahhhhhhhhhhh...... No! The suspense will kill me!!! Go do it now!

OldCubby · #10 09-09-2014, 11:02 AM

Quote:

Originally Posted by J-Mech

Ahhhhhhhhhhh...... No! The suspense will kill me!!! Go do it now!

HAHAHA Sorry man, my wife is already giving me a hard time because I spend ALOT of time working on this Cub. She leaves for work for the next 3 days, so I'll have plenty to work on it tonight.