Re: Ford 860 Looses Prime

Posted by Rick B. on July 16, 1998 at 15:29:56:

In Reply to: Ford 860 Looses Prime posted by Chuck Patterson on July 15, 1998 at 17:35:27:

: I have a Ford 860. It has a new hydraulic pump and things worked fine for a few weeks. Now whenever I start up to work, I have to loosen the pipe plug and release air from the system.
: The hydraulics will work fairly well until next start up. Some times while running, if I lower the quadrant lever all the way down, the
: hydraulics won't pick up when the lever is pulled up. I have been told by tractor repair people here..1) the pump needs rebuilt 2)I'm using universal hydraulic/transmission oil and
: need to use an 80W/90 gear lube instead. 3) I have a cracked manifold 4)I have a baad seal in the new pump. I did notice that the "new" manifold has a weld spot near a bolt hole on
: on the flange on the pump side. It does not leak fluid that I have seen. HELP
> The cause of your troubles is NOT improper oil. It does sound to me as if you have a leak in the suction side of the system. This leak is probably above the static level of the oil in the tractor, hence no leak showing, and air entering after shutdown. A cracked tube, or manifold housing is a possibility, or a bad gasket or O-ring. It's going to be a bear to find, but it's there somewhere, I bet. Look for tubes to crack RIGHT where they are pressed into manifolds or mount flanges.

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