broke driveshaft

[cwestf2]

Have a 2007 baja boss 275 lower unit went out and broke driveshaft off at the splines and the splines is stuck in the drive coupler. Whats a way to remove this without removing the engine

 

[tpenfield]

Welcome to iBoats . . .

That's a neat trick . . . never heard a drive shaft actually breaking . . . usually the splines or the u-joint yokes give it up first. When you say 'drive coupler' I assume you mean the coupler that is attached to the engine flywheel?

Anyway . . . I assume the remains of the drive shaft has really wedged itself in the spines of the coupler when the shaft broke. Not sure if you can do much about it . . . is there any part of the drive shaft exposed from the coupler, or did it break off clean?

The only thing I can think of is if there was enough of the driveshaft exposed so you could get a vice grip on it and try to turn it in the direction the engine turns.

Got any pics to share?

 

[Scott Danforth]

Have a 2007 baja boss 275 lower unit went out and broke driveshaft off at the splines and the splines is stuck in the drive coupler. Whats a way to remove this without removing the engine

you have to remove the drive, then the motor. if you have a jack shaft, you may be able to get the shaft and flywheel housing off, however do not count on it.

Welcome aboard.

 

[Bondo]

Have a 2007 baja boss 275 lower unit went out and broke driveshaft off at the splines and the splines is stuck in the drive coupler. Whats a way to remove this without removing the engine

Ayuh,...... Welcome Aboard,........ Ya probably oughta just plan on replacin' that coupler,......

It's been severely abused,......

 

[cwestf2]

Welcome to iBoats . . .

That's a neat trick . . . never heard a drive shaft actually breaking . . . usually the splines or the u-joint yokes give it up first. When you say 'drive coupler' I assume you mean the coupler that is attached to the engine flywheel?

Anyway . . . I assume the remains of the drive shaft has really wedged itself in the spines of the coupler when the shaft broke. Not sure if you can do much about it . . . is there any part of the drive shaft exposed from the coupler, or did it break off clean?

The only thing I can think of is if there was enough of the driveshaft exposed so you could get a vice grip on it and try to turn it in the direction the engine turns.

Got any pics to share?

It broke at the splines so nothing to get ahold of

 

[Bt Doctur]

To actually shear a input shaft take a lot of torque so dont be surprised if it comes out looking like this prop shaft
click to enlarge

 

[Scott Danforth]

fatigue cracks can start if you have a dead cylinder and run the motor for a while. the un-ballanced loading is not as bad as cyclical reverse loading.