Help, Midshaft stuck to pump shaft

///M5

///M5

Location
Guam
Somehow, my shortened Rad Dudes midshaft sheared off in the coupler. Now I can't remove it from the splined shaft. Soaked it in PB and heated it up trying not to fry the seal, but still not budging.

Any ideas?
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Jet_jase

Jet_jase

Location
England
Pull the motor slide a bar or something down to meet the shaft and hit it out that way. Had this with a cheap mid shaft last year and ended up cutting the main shaft in the pump tunnel as it was so badly corroded.
Good luck.
 
///M5

///M5

Location
Guam
Jet_jase said:
Pull the motor slide a bar or something down to meet the shaft and hit it out that way. Had this with a cheap mid shaft last year and ended up cutting the main shaft in the pump tunnel as it was so badly corroded.
Good luck.
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Thanks, I'll try that if all else fails

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///M5

///M5

Location
Guam
Pulled the motor, unbolted the pump, hammered on the shaft inside of the broken midshaft from the front, and nothing.

This is after soaking in PB and repeated hits with the map gas.

The broken midshaft slid back into the housing and is now sitting against the bearings. WTH is going on here...

The amount of force I'm using is definitely going to damage more parts. 20180419_223150.jpeg

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smoofers

smoofers

Rockin' the SQUARE!!!!
Site Supporter
Location
Granbury, TX
At this point I'd say cut the driveshaft and be done with it. Sucks that you'll need a new driveshaft and midshaft, but sadly jetskis always find a way to drain your wallet.
 
newbee

newbee

My fault though you was trying to remove the broken part from the coupler. Could you use a 3 jaw puller if you found a small rod or bolt to fit down the mid shaft.
 
///M5

///M5

Location
Guam
My next move is going to be an air hammer, and if that doesn't work, I'm welding a puller to the midshaft and cranking on it.

Funny that we are thinking the same. Don't want to cut...



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smoofers

smoofers

Rockin' the SQUARE!!!!
Site Supporter
Location
Granbury, TX
///M5 said:
My next move is going to be an air hammer, and if that doesn't work, I'm welding a puller to the midshaft and cranking on it.

Funny that we are thinking the same. Don't want to cut...



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Click to expand...

Just be prepared for the worst. If it is stuck that bad, I picture the driveshaft splines being toast anyway... They probably yielded or galled and will not end up in usable shape when the midshaft is finally pulled free. I hope that isn't the case and wish you luck, just giving you a heads up.
 
Sasquachcrap

Sasquachcrap

Location
North Carolina
The midshaft housing will not pull of the front of the midshaft. Most of the shafts have a slight shoulder that won’t allow you to press them on but so deep. The housing has to come off toward the pump.
 
///M5

///M5

Location
Guam
Sasquachcrap said:
The midshaft housing will not pull of the front of the midshaft. Most of the shafts have a slight shoulder that won’t allow you to press them on but so deep. The housing has to come off toward the pump.
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Yeah, Im not trying to do that. My last resort before cutting is welding the puller to the midshaft itself, and then inserting a piston pin or similar to push the shaft while it pulls on the midshaft.

Thanks for the offer on the parts. I have a GP760 midshaft ready to go in, and hope the shaft is ok. I don't think the midshaft I bought is OEM.

There was a ring that popped off, so it might be of crap quality.
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Sasquachcrap

Sasquachcrap

Location
North Carolina
I hope I’m wrong but I can’t see the splines being ok after all this trauma. The clearances are pretty tight and even the slightest burr on a shaft spline will keep them from mating. If you force it in you may be asking for trouble.
 
///M5

///M5

Location
Guam
Sasquachcrap said:
I hope I’m wrong but I can’t see the splines being ok after all this trauma. The clearances are pretty tight and even the slightest burr on a shaft spline will keep them from mating. If you force it in you may be asking for trouble.
Click to expand...
You guys were right. No freaking way that was coming out. About 3" of shaft left to go, so I had to cut

Now the fun part of finding a shaft for cheap...
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///M5

///M5

Location
Guam
I cut a section off and it still won't budge lol. Looks like water got in somehow. I greased it well upon install, so I'm not sure what's going on.
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