Re: More on the 56 15Hp

[johnyrude200]

I pressurize all gearcases to 16-17PSI. There are leaks in seals or housings that won’t reveal themselves until you get to that point. If it drops 1-2lbs over the course of 5 mins but stays put, you are good.

I’ve seen a few gearcases where there are pin holes you can’t see. WD-40 works really well like soapy water and doesn’t require anything other than pressing a button on the canister rather than mixing up the soapy water solution. In my experience, the only seals that really get to be a headache are driveshaft seals because the gearcase housing can often times be brittle or compromised.

JB weld works well on minor pin holes, cracks are usually a show stopper depending on location (if for instance, at a seem, JB weld will hold up, but if on a smooth concave/convex surface it will not work long term without significant grinding/etching).

QUESTION FOR THE OMC PLANT RETIREES:

What PSI does a gearcase develop during normal operational use?