Hydraulic Supplier

[TOLEWIS]

I've been searching online for a hydraulic component supplier. I have a JD 550 dozer that the pump seal has gone bad. I'm loosing fluid from hyd tank and the transmission is filling up. Looking for a place that would have the pump and maybe the blade control valve.

[Jim B]

You need to use the parts catalog to identify your pump and valve, according to the parts catalog there were at least two different pumps, and two different valves used. Start with getting prices from your JD dealer so you have an idea if the price of an aftermarket one is fair.

Pumps can be rebuilt, and valves can be resealed. Does your control valve have an actual mechanical problem or just leaks? Rebuilding your pump and valve may be better options.

Here is a link to the online straight 550 Parts Catalog PC1437.

PC1437