1450 won't move

[wrenchman]

I have a 1450 cub that won't move and it has hydro lift that also doesn't work

have taken off pump and as far as I can tell every thing is there and in good working order
what I did find is when taking it apart there was no oil in the filter which led
me to think it was taken apart B4 filter was new so thought maybe it was never started after filter was changed or no fluid added well fluid was full
charge pump pin was there and not broken the lower pipe that is connected to
bottom of rear end and goes to pump when checking that found a bottle cap in
pipe which I though was the problem cause pump could not suck of oil
after getting all back together still not move while running with motion lever ingauged pushed tractor well quite a ways still does not move
seems like I'm missing something simple!!what about the charge pump relief valve is there a picture that I can see to make sure there is nothing missing
and it was put together correct the more I work on this I'm sure some one has had it apart to my knowledge it has been setting a long time thank for any and all help
John

[Sam Mac]

What are you using for a filter?

[ol'George]

Well John,
Welcome to OCC.
A little more history would be helpful.
I get the idea you are new to this tractor.
I'm hoping you only took the charge pump off the hydro and not the hydro all apart, unless you are familiar with doing that.
The charge pump will go on 2 ways, they are designed so the rotation input can be either way according to the engine being used.
( those sundstrand hydros were used by many things/manufacturers)
Changing rotation is as easy as removing the 2 bolts on the ears and turning the charge pump 1/2 turn and replacing the bolts.
I get back to you in a bit and tell which side the milled flat on one ear is suppost to go when I go out to the shop.
I have discussed this and it has been posted before on this forum, but @ my age I forget chit.
The charge pump will not pump if it is set to the opposite rotation.
This might not be your problem but is a good place to start.
Ok,
The milled flat spot is on the right side ( bolt ear) of the charge pump.
(The right hand side is as sitting on the machine in the normal operators position as always)

[ol'George]

Now, if you have the pump on correctly and have the correct filter as sam mentioned and the hydro reservoir in not full of water,and it still will not move.
You can take the fill plug out and wrap a shop towel around your air blow gun and give it a shot of air while engine is running, taking caution to not use higher pressure, just a light pressure, about what you would use to blow up a balloon.
That will get the oil into the filter/charge pump.
Sometimes a unit that has been sitting dry for a long time, and the charge pump is worn, just can't suck sufficiently to get the oil moving into it through the filter.
BTDT.
Do make sure you have the hydro in neutral with the brake applied!!
You don't want it to suddenly move and cause an accident.
Now report back to us

[wrenchman]

well guys I'm amazed at all the ideas will post pics as soon as I figure out how to do it this type of thing is all new to me
some answers
* oil was full
* oil in trans was like new had a new oil filter on it but when I removed filter,it was empty
* I rebuilt engine had a broken rod when I got it,runs great
* I bought my oil and filter from local cub dealer
* no the pin for charge pump is not broken
* yes the pump is turning
* having the charge pump on 180 is a good thought I will check that

thanks guys I have just retired and my hobby is rebuilding cubs
this one I'm working on is my third machine

will get back to you an d some pics soon

thanks again John

[sawdustdad]

Are you sure the charge pump shaft is turning? If a roll pin in the drive line is broken, the drive shaft may turn but not transmit power to the charge pump and hydro.

[wrenchman]

thank for keeping me in check

I did check for a broken pin but again no luck not broken so still on the hunt
for problem I'm sure it will be something simple that I'm just not seeing
so any and all thoughts will be a great help

john

[sawdustdad]

Originally Posted by wrenchman

thank for keeping me in check

I did check for a broken pin but again no luck not broken so still on the hunt
for problem I'm sure it will be something simple that I'm just not seeing
so any and all thoughts will be a great help

john

While the engine is running, look at the back side of the hydrostat, there is a small shaft that protrudes. It's under the seat. Is it turning?

Sometimes roll pins look fine but are sheared off inside.

[Yosemite Sam]

Take the manual transmission shifter cover off, reach back in the hole and put a #2 phillips screwdriver through the hole in the stub shaft that comes out the back of the transmission.

Then take the tunnel cover off and clamp some vice grips on the drive shaft and try to turn it (in the normal direction of rotation).

[wrenchman]

Hi guys
well had a bunch of things to handle so back to problem at hand. Yosemite Sam tried what you said, the shaft won't turn so I think charge pump pin is good checked that the charge pump is on correctly oil & filter from local cub dealer.
I found this poor cub just sitting in a yard covered with weeds and stuff was able to get it for free guy just wanted it gone. From what he said, it has been sitting there for at least five yrs. His son was working on it, cause engine was broken. It turns out this cub had a broken piston rod. I fixed that, runs great.
Every thing works except transmission and hydro lift for deck. I am going to add pics hope this works

So now that the weather has gotten little colder and wet, I'm hope to work on my cub and solve the mystery.

John: