I have a '50 4100 with a really good running 235 in it. The front seal is leaking profusely. I have never installed one on one of these engines before. How big of a can of worms am I going to open if I attempt this with the engine in-frame? It appears that the balancer/crank pulley is just pressed on. I have no doubts about being able to get it off - I'm just worried about how in the hell I'm going to get it back on.
