Re: Oil Pressure line for 1937

Posted by JWL On 2014/8/20 22:48:37

My 115C has the oil pressure gauge tubing connected to one of the main bearing ports on the RH side of the engine. I believe it is the port for the rear main bearing. It is not at home right now so this is all from memory.

The tubing is 1/8" copper and has a coil or two on the engine end. The fitting from the tubing end is an inverted flare nut and a 1/8" NPT for the engine side.

Two wrenches are necessary to remove the tubing: one wrench on the nut that screws into the fitting and one on the engine block fitting. A pair of fitting wrenches are the best tools to use as they will grab the fittings on three sides instead of the two sides by an open end wrench. Once you break the nut loose from the fitting it should unscrew easily.

I do not know how the tubing is connected to the instrument panel gauge, but believe Howard gave you the right description.

I hope this helps.

(o{}o)