Archive through January 13, 2014

[dtanner]

Gerry

My pump was from nothern tool and a 4 to 8 gallon a minute . so at a idle it is slow and as the rpm`s get higher it does speed up and move faster. I bought way to big cylinders that need more fluid to move them ; So at 1/2 throttle if I pull the lever to lift and move the bucket one function will slow down because the pump can not keep up with the fluid need to run both.I think the Johnson loaders have a small cylinder bore and would need much less fluid for movement than the cylinders I have . So a 4 to 8 gallon a minute might be great for your loader. I find I`am at half throttle a lot with the 129 loader just because it is easier to control ground speed . Remember to order your pump with the correct rotation if it will be mounted under the tractor by the quick attachment. You will need a counter clock wise pump if mounted there. Hope this info helps.

 

[sblunier]

4-8 gpm seems to be the "standard" for loader pumps on Cubs. Calculate the volume of displaced oil for the main lift cylinders (both) then using your desired operating rpm, typically ~2500-2800 rpm for most loader work, and your desired cycle time, calculate the GPM pump required. It's fairly simple math and will confirm your sizing choice.

 

[rhatley]

Thanks Ken

 

[hfrantum]

Thanks guys for the info I'm sure I can figure out something

 

[dfrisk]

HARRY - I also welcome you to IHCC.com!

To add to what Don & Steve B said, the larger cylinders either in diameter or length will increase lifting power, as long as the design of the loader is correct, also as Don said the larger cylinders slow down the speed of lift & lower. Higher pump PSI also increases lifting power with smaller cylinders while maintaining similar speed.

You don't want too great of lifting pwoer on a garden tractor loader, too easy to break stuff.

I'd err on the side of a larger GPM pump than a smaller GPM (gallon per minute) pump, nothing worse than having to wait for a too small pump and a slow moving loader when you want to do something. BUT, don't go with too big of a pump or the controls get real "Jumpy".

Even your littlest tractor, the 1250 will have plenty of power to run the loader pump. Like Steve said, aim for running your tractor's engine at less than full throttle, and you'll be surprised how many times you will want to run both loader functions, tipping the bucket and raising/lowering the lift arms. You can "feather" the control valves and slow the speeds of the cylinder's movement down, but just pushing the valves to 100% flow is easiest when you're concentrating on what your doing.

I spent a LOT of time on loader tractors years ago when I was younger, everything from Case 530 Construction King Tractor/loader/backhoes, a Case 420 CK loader, to the '51 Farmall M with the Stan-Hoist loader w/manual trip bucket that's out in the shop.

 

[hfrantum]

Thanks Dennis for the input I'm just not sure on what size to get at this point, this loader isn't very big and I'm just going to be using it for yard work at the most and snow removal when we get it (I'm in Maryland eastern shore) but the loader is mounted on the 1250 right now but my plans are to mount it on my 1650 in the spring after I rebuild it because she's starting to smoke a little bit, and the cylinders that are on it are the original Johnson loader cylinders there not very big in diameter so I'm kind at a loss I've never owned one but I really like the little loaders on the cub cadets and it's perfect for i need on a 3 acre lot I have thanks again

 

[tkhoffman]

As bet this is as debatable as 'what oil to use '

Rear Differential Cover. Dry Gasket or a thin coating of Gasket maker (RTV)?

 

[jbaker]

Dry Gasket is my vote

 

[dfrisk]

TONY - RTV of ANY type = NO!

I recommend HYLOMAR Universal Blue. It used to be a lot easier to find when Permatex was packaging it for Hylomar in the US, you can still find it but it's harder. Two years ago I went into my local NAPA store, asked if they carried it, Store Mgr. did a search on-line for it, said it sounded great... never even offered to try to get me any. SON finally ordered me a tube on-line.

Just a real thin swipe on all sealing surfaces is enough.

 

[dtanner]

Denny
I have use the right stuff . just a small bead on one surface and find I never had a leak when used. On my 125 I had a crack in the base pan and replaced the pan .

Harry

I`am sure you will do find if you get a 4 to 8 gallon a minute pump for your loader . I should have done the math before I bought mine or bought cylinders with a smaller bore then I have. I would have been much happier with how the loader works.I have grown use to using one lever at a time now and hardly notice the slow response when I ask the loader to do two things at the same time .