Mercury KE4 impeller help needed

[Anonymous]

im making a similar took out of a fan clutch tool, if it works i’ll post a picture haha, if not i guess i will try the crescent wrench mod..

[20mercman]

I too have made a tool like the one Lloyd referred to. It is just a round block of steel with holes drilled into it that match the KE-4/KE-7 and others in this family. I have made it into a universal tool, so I also have holes in it that match the KH-7-MK-25 water pump cover and the gearcase cover nut. Very handy. What Dave B was talking about was using a spacer between the tool and the prop nut that keeps the tool from slipping off and out of the holes. The more firm you can keep the tool, the easier it will be to remove the nut. Heat is also helpful if it is really stuck. You will not have to remove the water pump housing unless you need to replace the oil seal in it or if the face of it is badly worn. A lot of wear on the pump side of the cover nut will also reduce the efficiency of the pump. It depends upon how much you plan to use the motor. If it is bad, you can replace it, or if the grooves are minor, you can fill them in with a good epoxy like JB Weld and sand smooth. (Not a permanent fix, but if you put 10 hours a year on your motor, it will last quite a while.) The small screws and the center bolt on the M-60-558 tool pictured above is for removing the water pump assembly by threading the two screws into the pump housing and pulling it out with the center bolt. I have some long bolts that I welded up that I use along with my balancer puller. (A guide plate that has holes for the prop shaft and the two bolts help keep it square when pulling)

Steve

[Anonymous]

The tool i made lines up perfect and I used a block of wood with hole drilled for shaft as a spacer and was able to keep tension on the tool with the prop nut. Sadly the bolts I am using for studs are not strong enough and keep bending under pressure causing them to slip out of the holes. The next step is too find a stronger bolt or weld some sort of very hard 1/4 stock onto the tool. I don’t have access to a welder right now so the project may have to wait. I’m going to call up some local shops tmro and see if they are willing to remove the cover for me and I will do the rest.

[fifty20ne]

Note the pins on
Crescent wrench
Are hardened
Tension pins
Available at any
Good hardware
Store.

[billw]

The original tool was round for a reason. It fits in flat against the cover of the pump, rather than slightly off the cover, at the level of the aft gear housing. That little bit of difference makes the pins a LOT less likely to bend over.

Long live American manufacturing!

[Buccaneer]

It sounds like a fun lathe projects to make one of the M60-544
style cover removal spanner wrenches……. just not sure
I want to buy another Mercury to use it on, lol.

Prepare to be boarded!

[labrador-guy]

Joker when you start getting frustrated you can check this tread out. To calm down.

https://aomci.org/forums/topic/kg7-water-pump-cover-removal/

Some of us had one L of a time getting that cover off! Those tools work good sometimes. The one from Mercury is suppose to turn around and pull the cartridge out that the impeller sets in. Elmer Kekoffer never expected his motors to last as long as they did!

dale

[Anonymous]

tried heat, lots of lube, the crescent tool and the one I made out of the fan clutch tool. So far all I have to show is a couple of busted knuckles. Called a couple local shops, no one has the spanner wrench for this old motor. Its either buy one or keep improvising at this point. Last result is drilling it out but im not there yet..

[fifty20ne]

Sometimes a custom
Tool is the only
“Correct” solution!
If I were going to
Make a custom
Tool I would
Design one with
Larger pin dia
For the tough
Jobs.

You might try a
Couple of heat
Cooling cycles
Using propane
Torch before
Attempting again.

Good luck,

Bob

[dave-bernard]

use map gas.

[Author]

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