Originally Posted by crashley
Hi I have a 1942 WW2 work boat and the steering is starting to give a bit of trouble You have to keep turning the wheel to the left to keep the boat heading straight It appears that the steering pump has worn if you turn the wheel to full lock you can keep slowly turning the wheel
the ram has been rebuilt and seems ok
the pump is a triple cylinder completely made of brass the local hydraulic shop just laughed when I asked if they could repair it
It is the original pump
so what are everyones recommendations for a new pump( 3 cubic inch per rev)
40 ft full displacement 100 hp gardner 6lw engine about 12 tonne
On some of the older Wagner helm pumps the "shop protection" valve that prevents flow back to the helm pump from the rudder cylinder is a separate valve. It is plumbed in "parallel" to the helm pump, and usually located a few inches from the helm pump. It can in fact be located anywhere between the helm pump and the cylinder if a single helm, or between the helm pump and the tees to a second helm pump if more than one helm. This valve blocks the cylinder from feeding flow back to the helm pump, which keeps the rudder in the same position unless the helm pump is turned. In multiple helm installations it prevents one helm from simply turning the other wheel instead of the rudder. If it sticks or leaks the rudder can turn due to the same force as causes prop walk, resulting in the need to continuously turn the wheel to keep the rudder in the same position. At "hard over the leakage allows the wheel to turn after the rudder hits the stop. It is about 1.5 inches square, 7 inches long, with 2 pipes in, and 2 pipes out. If you have one rebuild it. If you don't have one, it is internal to the helm pump, make sure it is operating freely, and sealing when you dismantle and reseal the helm pump.