What is the max run-out for 1999 Yamaha 200 HP???

[rodbolt]

Re: What is the max run-out for 1999 Yamaha 200 HP???

you simply CANNOT check shaft runout with the shaft in place.
cant happen.
to much bearing slop.
thats why V blocks and shaft removal is nessasary.
takes about an hour to change a freshwater motor 3.1L standard rotation propshaft on your engine.
remove the gearcase,plave on a stand.
remove the shift shaft assy.
remove 2 12mm head bolts from propshaft carrier ring,remove 2 10mm headed bolts that hold the carrier.
remove the carrier and propshaft assy.
replace the 2 carrier orings and 2 carrier seals.
remove the shift clutch spring,then the cross pin, remove the shift pin assy.
its fairly simple, I may even have a good used shaft hanging about the shop.
installation is basically the reverse of dissasembly.
no shimming required for prop shaft replacement on that gear case.
any decent shop in your area can do the work in about 3 hours.

 

[mcbassin]

Re: What is the max run-out for 1999 Yamaha 200 HP???

Thanks Rodbolt! I am confident I can change the propshaft. So what about straightening if it is bent? is that an option? Also, I really don't know what other parts I need to order besides the orings and seals once I confirm the prop shaft is bent? BTW, If you have a known good hanging in your shop I might be interested in buying it since $200 plus shipping is the alternative. Thanks,
Mike

 

[mcbassin]

Re: What is the max run-out for 1999 Yamaha 200 HP???

Update:
I removed the lower unit (first time for me) dissassembled the water pump and pulled the prop shaft. Wasn't really too hard just a little time consuming. I'm still not sure what parts I need to order as far as o-rings, seals, and bearings? I do know I am ordering a rebuild kit for the waterpump. And it looks like the left tilt/trim rod seal is leaking. Anything special about changing the seals on that? Any suggestions appreciated. Here are the pics:

Prop shaft out of the lower unit

Seals and bearing(s) need changed?

Should housing be replaced?

Sealer on the outside of insert?

Leaking trim rod seal

 

[mcbassin]

Re: What is the max run-out for 1999 Yamaha 200 HP???

Okay, this morning I put the shaft on some vee blocks and checked the runout at the end of spline it is right at .010" total from lowest to highest. Is this the right place to check it? Is this straightenable? here are a few pics:

 

[rodbolt]

Re: What is the max run-out for 1999 Yamaha 200 HP???

cant check it on the splines, use the flat area just fwd of the threads.
.010 isnt acceptable.
why all the shimming under the v blocks?
doesnt make sense.
check it at the flat and just before the thrust washer taper.
compare the two.

 

[mcbassin]

Re: What is the max run-out for 1999 Yamaha 200 HP???

My thinking about shimming it level was to make sure the full radius contacts the vee rather than just one corner area of the smaller end of the shaft. (a little over .080" dia. smaller)

I checked it at the very tip of the splines and just forward of the splines (the flat area you are talking about) and the measurement was still right at .009" total. I also checked it at the small flat area right before the threads, still had the same .010" . The last thing I checked was the bearing surface and the other end far right side which was right at .0016" total. So what about straightening the shaft? thanks,
Mike

 

[mcbassin]

Re: What is the max run-out for 1999 Yamaha 200 HP???

I got the shaft back from the prop shop. They straightened it to the oem specs less than .002".They also rebuilt the prop, I replaced all the seals,the rear bearing, and the water pump assembly. I got it all back together, I hope I got it all right. My first time into a lower unit...went pretty smooth overall. Find out this weekend...if the weather holds.

 

[rodbolt]

Re: What is the max run-out for 1999 Yamaha 200 HP???

when you removed the prop shaft seals,did you measure and record the seal depth?
if you pressed the new seals in flush they will hit the line cutter portion of the thrust washer and be destroyed.
no real spec but about .218 deep will work.
or use the correct yamaha seal installer and the depth will be correct.

 

[mcbassin]

Re: What is the max run-out for 1999 Yamaha 200 HP???

Rodbolt,
I set the depth on the seals to nominal dimension in the book. If I remember right it was .192" I did check that the thrust washer didn't hit when it was installed too. I think Yamaha should have designed so they bottom out and still have clearance....kinda a poor design in my opinion. Thanks for the help!,
Mike