149 No Longer "Parks" After Hydro Fluid Change
 

Odd issue I encountered on my new to me/first 149 Cub. Decided to change the hydro fluid as I have no clue what it's history was. Fluid level was a little low, but upon finally getting the rear cover off, everything looked great inside. I picked up a Wix hydraulic filter and some IH-compatible fluid from Farm and Fleet. I know Hytran is preferred, but it seems a lot of people do OK with generic and since I assumed the fluid was going to be pretty funky I wanted to use less expensive stuff as a "flush" before spending $100 on the good stuff.

Everything was fine on the test drive...until I went to park it. It's 'home' has a bit of an incline, and ever since the fluid change, it no longer stays in place when the engine is off and I now have to use a chock to keep it in place due to this very slow creep. There was no other change here, other than the fluid and filter. Is this simply a cheap fluid problem, or is there something else going on here?

Thanks!!

Without knowing the severity of the incline....
A. Are you setting the brake pedal in the lock-down position when you park it?
B. Do you have manual or automatic hydro-release valves?

The incline isn't severe, but it's not super shallow. Probably a 6-8" rise over a 3-4 feet.

A) brake pedal is set, but it could be adjusted. That said, it does stop the tractor..or I think at least, the discs look like at least something is working on both sides.

B) If it's what you're referring to, there are a couple relief valves with the buttons on them. I've not actuated them and they don't look to have been moved in quite a while.

Did it have this issue before the filter/fluid change??
The brakes are mechanical and if not properly adjusted.......well......
I think you have answered your own question.

Pop the tunnel cover off and see if the pin in the control rod ass'y (part #14) bottoms out in the cam pivot bracket (part #7) when the brakes are locked,

If it does, and the tractor can still be rolled, you have a brake adjustment issue.
If it does not, you have a hydro adjustment issue and could still have a brake adjustment issue as well

Download the FSM for your Cub from the manuals section,
It has a detailed procedure for proper brake adjustment.

Good Luck!!

No, it would stay put for days on end without the brake on before the fluid change. Maybe it was moving so slow I didn't notice it, but now you can see it moving. Without a doubt I need to make some adjustments, but I guess I wasn't sure if it was normal for it to creep like that with the engine off or not.

So, you park it, on an incline, w/o the brake being set and wonder why it rolls??

If it has automatic valves, yes it will roll if the incline is steep enough

Just adjust the brakes, set the brakes when parked and don't worry about it.

Why would you not set the brakes when parked!!

If you can push it slowly on a flat surface, then it will roll on a slanted one. Just means the auto release on the relief valves are working.

I guess I wasn't clear in that it didn't roll before the fluid change, and now it does. Sorry for leaving that out.


I'm reasonably sure my question was not if the mechanical brakes should function...


Well, in a sense I guess, yes that is what I was asking.


This is sort of what I was looking for. I did state above I was not sure if I have automatic valves, but at this point I will assume I do and that they are now working after the fluid change.


Well, if I had done that from go, then I wouldn't have known my automatic valve wasn't working, would I have? ;)


Parking pawl thingamabob was seized to the pedal. I won't tell you I almost bought a 129 that was missing it entirely..


I was always a little slow, but this whole gravity thing is sinking in now finally.

The manual states to flip the relief lever on the tunnel cover to roll around manually. Between that, and not rolling before the fluid change, one might get the idea it's not supposed to move when turned off. But again, me slow.

Easily my roughest start on any web forum, but glad to be aboard, I think! :beerchug:

Just be happy you didn’t call the rear of the motor, that actually faces the front, the front when you meant the rear when it’s clearly the front whether it’s at the back of the front or not.

I’m new here too. You’ll likely not encounter anything on a Cub that someone here can’t answer.

At this point I will just appreciate the fact that I am not in Australia, with the whole down side up situation; otherwise that might be confusing.