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Need help removing yoke drive shaft

O

Oman

New member
Hi All
I am new to this forum and hope someone could help me with some info. I recently took my bayliner 185 out for a spin and next thing I get smoke , which smelt like burning rubber coming for the rear of the motor(Crankcase). I manage to idle back to shore but had massive vibration and thought it is the yoke drive shaft bearing. I have stripped the stern drive down to the transom plate and was wondering if someone could give me pointers on how to remove the drive shaft that runs through to the motor. The lower gearbox looks good with no damage and I was hoping I don't have to remove the engine at all. Thanx in advance.
 
the driveshaft is part of the outdrive. Slide the rod out that holds the trim rams on at the rear (pop one of the plastic caps off to reveal a snap ring clip - pop that off and slide the bar out),
Put the shifter in FWD. Disconnect the speedometer pitot tube.
Remove the 6 nuts holding the drive on and pull.

Then pull the engine and change your coupler. Purchase an alignment bar and a tube of spline grease when you order the coupler - you will need the bar to align your engine - misalignment is what causes most couplers to fail.

Have a good look at the stringers and engine mount lag bolts- any rotten wood can cause engine misalignment. Also look at the rear bellhousing mounts and transom of your boat for soundness.
 
Hystat , thanx for reply, but the problem I have is when I unbolted the outdrive it would not budge because of drive shaft. I then stripped the outdrive and removed nut holding drive shaft on to outdrive. Once that was off I was left just with drive shaft , however I can't get the sucker off. Do you think that is siezed in there?
 
shaft probably just stuck in the gimbal bearing. Rust and old hard grease make a tight connection. Lots of folks have rigged pullers up over the years. Slow even pulling force is the trick. Sometimes the gimbal bearing pulls out with the shaft, which is fine, you need a new one of those too.
I don't have any magic formula or tooling. One guy around here pulled one with a ratchet puller around a tree. I don't think I'd recommend that, but as long as the pull can be controlled.

Look and feel in behind the engine - if you see aluminum shards and rubber dust all around the coupler, You have to pull the engine anyways.
Might as well lift the engine out first - then knock the driveshaft back from inside the hull.
 
Thanx for that Hystat, I was just a bit worried I would damage something else. I am in the process of making up a slide hammer to pull the shaft.
I appreciate your help man, thanx again.
 
Put the upper unit back together if you can and hook the trim rams back up. Brace the drive against swim platform if equipped and use the trim rams to tear it out of the bad engine coupler.

You are going to find that your engine coupler is the cause of all the smoke and bad smell.
 
"I have stripped the stern drive down to the transom plate and was wondering if someone could give me pointers on how to remove the drive shaft that runs through to the motor. The lower gearbox looks good with no damage and I was hoping I don't have to remove the engine "

Being that we dont know what drive your working on , it will be difficult to give a correct response.
 
Thank you all for the info. The shaft is out, now to pull the motor and order the parts.
Much appreciated.
 
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