[jameswhitworth]

Looking for a replacement helm pump for my 36' sailboat. The old pump has three hydraulic lines feeding a three way valve. Reservoir is in the pump housing.

 

[snotter]

Take your old pump to an industrial hydraulic mechanic and have them rebuild it; and, while your at it, take your ram in too. Many prefer to rebuild pumps and rams themselves. I always let the pros do mine--it just doesn't cost that much IMHO.