656 hydraulics

Is the hydraulic system screamin' at you like it is bypassing? Maybe she's froze or plugged up?

On that model, the front pump runs both the remotes and the steering. The rear pump runs just the hitch.

If the hitch won't move either, then the problem is something that is common to both pumps. Oil pick up, sheared drive key, low oil, etc.

If the hitch works okay, might be a problem here because that rear pump uses the same oil intake as the front pump.

Allan

Sure don't wanna start an argument that's for sure and I probably used the wrong term. I should have said “piggyback pump” instead of “rear pump”.

But all in all, the 544, 656, 666, 686, Hydro 70 and Hydro 86 all used the same basic hydraulic system with a few flow-rate variants and differing pump manufactures thrown in over the years.

In the 656, as well as these other tractors, the power steering and the auxiliary remotes are handled by the front main pump with a priority flow of 3.5 gallons going to the steering. The "piggyback" pump is the "hitch" pump.

Tractors shipped without a hydraulic hitch just had a plate bolted to the main pump in place of that piggyback pump.

Allan