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Hydraulic pump revisited

B

BrianLivingstone

Member
51 8n 12 volt
Well I removed the pump and cleaned it real well . Installed a new safety valve and gasket and refilled with hydraulic fluid.
The loader will lift better than before but it is sporadic at best . It won't lift with any weight in it at all . So now what?
I see the site has hydraulic rebuild kits for sale and wondering if that is where I need to go next .
Any thoughts are appreciated
Brian
 
Brianlivingstone,Do you have the 3 point lift arms chained down,They must be chained or locked down for the loader to lift if you are using the internal pump.
 
I didn't know that they had to be chained down . I just thought it made the loader move sooner.
Does anyone have a picture of how they " chained down the lift arms?"
 

You guys are the BEST ! Thankyou so much . It worked like a dream. I have learned so much about hydraulic pumps this week .
Love this hobby!
Brian
 
A few year ago I came up with the idea of a belt driven hydraulic pump that allows you to be able to operate any remote hydraulics and also have the use of the three point hitch at the same time. My idea has been copied many times since and some of the ideas are pretty good. Some are rediculous but all of them seem to work so keep up the good work you copycats. :O)

Zane
 
Help me out here..........

On Dec 24, I asked you:

" Does the loader work off of a front pump or the tractor's pump? If it works off the tractor's pump, are the lift arms chained down or do you use a valve to divert the pump plumbing from the 3-point to the loader?"

You replied: " The loader works off the tractor's pump and there is a divertor valve behind the seat ."

I recall your response because those valves are rare. Pull up, you divert the pump pressure to the bucket. Push down, you have pressure on the 3-point. I've got one of those valves on the shelf to install on my 51 8N w/ a Freeman Loader.

So now, you chained the lift arms down (as TOH also suggested on Dec 24) and now the loader works.

So what happened to the diverter valve?
 
Bruce . I will try to explain the best I can . The diverter valve that I referred to is like a ball valve located behind the seat. When open it allows the fluid into the lines that supply the loader arms . When closed it will lock the loader in the current position.
Brian
 
Brian.......make a WAG (wild A$$ guess) how to chain the lift arms down. Usually, there's a HEAVY DUTY towing arm that mounts under the diffy in a bracket. You haffta buy the arm and the bracket. ...BUT... having a FEL (front end loader) beats a wheel borrow and shovel, eh? ........the amazed Dell
 
(quoted from post at 23:19:18 01/09/17) Bruce . I will try to explain the best I can . The diverter valve that I referred to is like a ball valve located behind the seat. When open it allows the fluid into the lines that supply the loader arms . When closed it will lock the loader in the current position.
Brian
Click to expand...

Sounds like it is just the usual shutoff valve used when the test port and 3pt lever are used to operate a trip bucket loader.

I'll bet if you look the line coming into the valve comes from the test port on the bottom right of the tractor.
  • [*:3612a5b6bd] When the valve is open raising the 3pt control lever sends fluid from the test port to the loader cylinders to raise the loader. For that oil to be pressurized the 3pt has to be chained down.[*:3612a5b6bd]When the 3pt control lever is moved to the down position the oil flows back from the cylinders through the test port lowereing the loader. [*:3612a5b6bd]When the valve is closed it "seals" the test port locking the loader at whatever position it is currently at allowing you to unchain the 3pt arms so the 3pt can work again.[/list:eek::3612a5b6bd]This is why pictures are always preferred. The setup is very conventional and would be immediately obvious to anyone familiar with the operation of a loader using the test port.

    TOH
 
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