Welcome to the Dark Side. We love converts and we love Canadiens, Eh?
I am pretty sure a 34 CHB will be a single engine. Probably a Ford Lehman 120. Right under the front of the engine should be your shower sump, right in front of that should be your main bilge pump.
If you have a genny, there may be a second bilge pump slightly under the rear platform for the genny.
A manual would not be any help to you. They seldom show accessories such as bilge pumps and yours is most certainly "Owner Modified" over the past 40 years.
B.T.W., F.W.I.W. (By the way, for what its worth) All boats leak, especially Taiwan Trawlers. Some from the bottom half (stuffing box, rudder box, thru hulls) some from the top half, (decks, windows, hatches.) Just find the leaks one at a time and patch them, don't fret about them
pete