Home › Forum › Ask A Member › Ruddertwin Jugs › Re: Ruddertwin Jugs
It sounds to me that you need to remove the cylinders to see what is wrong. Did you remove all rings and physically decarbon their grooves? Was each ring placed over its pin, facing the right direction, where it belongs ? Check all rings separately, when placed square in their cylinder, to see if the end gap is correct, which is .003-.010" for 3HP models and .006-.009" for 4HP models . The oiled cylinders should slide on fairly easily by hand after all the rings on the oiled piston enter the cylinder. A ruddertwin cast iron piston should have .0025 to .004" clearance in the cylinder. Cast iron pistons are made with less clearance than aluminum pistons. I think the plating is too thick.