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Stuck Driveshaft 1984 Johnson 8hp

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Robert Guentz

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" Well I bought a used 1984 JO

" Well I bought a used 1984 JOHNSON 8hp for a good price, $285.00. Thought I would give it a "Good servicing", bought the clymer manual. I'm changing the the waterpump out, got the new parts, pulled off the lower end but the driveshaft stayed in the powerhead. To make a short story long, Is the driveshaft supposed to just "slip out" or is there something holding it in? I've tried the WD40 soaking for a couple of days now and putting the driveshaft between 2 pieces of wood, in a vice, and hitting a piece of wood with a hammer on the shaftframe but it is not budging. Any suggestions, HELP!, I'm getting frustrated.

Thanks in advace,

Robert "
 
"Robert,

The driveshaft sho

"Robert,

The driveshaft should come out easily. Either it is frozen into the crankshaft or the splines are damaged.

The only advice I can give you is to pull the powerhead and hacksaw the driveshaft off as close to the crank as possible. Then you have to carefully drill the remaing piece of the shaft out of the crank without damaging the splines in the crank. Of course, if you do this you will need another driveshaft.

I have seen people rig various "homemade" pullers when confronted with this problem. Some worked, some did not. The one I remember was a simple device made from a short piece of pipe. The guy welded a pipe union onto a piece of steel plate which was long enough to span the width of the motor leg. He drilled a hole through the plate big enough for the shaft to fit through. The pipe could be screwed into or out of this. He drilled and tapped a hole in the side of the pipe, and put a lock screw in the hole, to lock the pipe onto the driveshaft. He welded a large nut onto the end of the pipe, so that you could turn the pipe with a wrench. The idea was to srew the pipe into the union and place the assembly on the shaft so that it rested against the bottom of the motor leg. Then you tightened the lock screw against the shaft. Then you could pull the shaft out by backing the pipe out of the union/plate assembly. It worked pretty well, if you could get the lock screw to hold the driveshaft tight enough.

"
 
" Pull the powerhead with shaf

" Pull the powerhead with shaft attached. Slide a 10" piece of pipe over the shaft, then lock two pairs of vice grips back to back on the shaft in an area which will not matter if it gets scored. Then, using the pipe as a slide hammer, convince the shaft it's time come out. Chances are you will be successfull and shaft will not be ruined. Good luck. "
 
Robert...in removing these st

Robert...in removing these stubborn driveshafts i have found success in removing the powerhead and welding a piece of steel about 8" x 2" x 1/2" to the driveshaft a few inches up from where the water pump sits. then take to this piece of steel with a hammer and the shaft should come out with a few decent hits. In most cases you can clean up the weld marks sufficiently with an angle grinder to put the shaft back into service. This may also be an option for you.
 
" Thanks for all the info guys

" Thanks for all the info guys. I'll have to try these ideas the beginning of the week, going to pick up a boat down in San Diego this weekend.

Thanks Again,

Robert "
 
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