'68 55 hp Evinrude - cooling question

[revkab]

I am just beginning to check out a 1968 55 hp Evinrude Triumph with hydro-electric shift outboard.

I put the muffs on it, and after a bit of guessing/poking/prodding, got the thing started and running. I noticed there was no water coming out of the two "water discharge and exhause relief" jut under the exhaust covers. Should there be? I shut the engine off pretty quick so I hope there was no damage.

Also, I was not able to get the motor to shift into neutral or reverse. I will follow the advice in past posts on diagnosing this problem. My question, however, is: if I drain and install new lower unit (type C) lube to test that part of the shifting problem, will it have to be drained (and wasted) before I change the impeller for the water pump?

I have a (Factory) service manual that is rather confusing, since it assumes the mechanic wants to disassemble the entire motor, and only describes changing the impeller as part of a complete overhaul. I have a Clymer manual on the way in the hope it will give me instructions on how to go about changing the impeller without disassembling the entire motor. My hope is that I can simply drop the lower unit, change the impeller, and put the whole thing back together again.

Help???

 

[tevans720]

Re: '68 55 hp Evinrude - cooling question

LOOKS LIKE I BROUGHT UP A OLD POST HA HA WELL HOPE IT HELPS SOMEONE!


I have this motor as well. First off on these older motors there is not a tell tale (**** hole). Instead it will mist out of the exhaust as you thought but with only muffs on you will not feel anything. You can check by putting your hand on the power head if you can hold your hand there for 3 seconds or more your cooling is fine if not then bad impeller or more.

Now with your shifting problem it could be many things. Starting with old oil or not enough oil. Then on to a short somewhere in the shift wires or even bad shift solenoids.

To get your lower unit off take off all the bolts that your book says then you will need to disconnect the two shift wires leading to the LU. Tie or tape some string to the wires so that when you pull the LU down the string will come with aiding in installation to get the wires back up the exhaust leg. Now your water pump is right there on the drive shaft now that's self explanatory or your Seloc or Clymer book will help if needed.

With your shifting problem that's kinda confusing and don't have the time to explain but basically your gonna need a ohm meter and the book and do a lot of testing also you may need to disassemble the solenoid housing and check if anything is not connected right (that was my problem)

If I had some more time i could get in depth but I hope I was a help Ill check back later so ask anything u may have on your mind.

Tyler