Help on Hydraulic Pump for Log Splitter

[ltlbull]

I have what appears to be a 11GPM hydraulic pump which was run with no fluid by the previous owner. I took the pump apart and it appears to have two rods with top and lower gears in two sections. One of the smaller gears is split in half. Numbers on the pump are as follows:

MTE-4648

718-0683 L7

This pump goes on a 2004 Yard Machines MTD 25 Ton Log Splitter.

Does anyone know where I can get this gear from? Should I just trash the pump and buy a new one from Northern instead?

Any help is appreciated.

Thanks,

Jim

[George]

Given the price, yes.

[Lew Hodgett]

MTD is the old Modern Tool & Die, located in Cleveland, Ohio.

Think they are now located in Brunswick, Oh.

I would try contacting them for help.

LEW

[Larry Jaques]

On 16 Mar 2005 07:29:41 -0800, the inscrutable "ltlbull" spake:

Ouch!

That could lower the pump pressure a tad, huh? ;)

How does the chamber look with the gears out? If it needs rebuilding, is it rebuildable? Otherwise, look to

or try the mfgr that Lew gave you.

- Yea, though I walk through the valley of Minwax, I shall stain no Cherry.

[tim124c41]

You'll almost certainly have to replace the pump.

The internal clearances in a hydraulic pump are measured in the ten-thousandths of an inch (~ 1/30th the thickness of paper). Depending on how long the pump was run dry, the working surfaces inside the pump may be ruined.

Check for any wear or scoring you can feel with your fingernail. If you find any, it's not worth gambling on. Toss the pump and buy new. Even tiny gaps will prevent the pump from developing full pressure.

Find a small engine shop that deals with MTD stuff and see if they can source parts for the pump. Because these parts have to be so closely matched, my guess is that you can't buy just a single replacement gear. But if you can, get a seal kit too.

If MTD doesn't sell parts, and you still want to try fixing it, you can also try bringing it into an industrial hydraulics supplier to see if they can determine the manufacturer (likely Haldex, but may not be), and if they can get parts. Cost and effort by this point will likely exceed the price of a new pump, however.

Tim