Let's dig the final drive - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Transmission / Rear End
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Rear End Woes? Splines Shot? Discuss it here!

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post #1 of 20 (permalink) Old 08-15-2018, 11:18 PM Thread Starter
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Let's dig the final drive

Bad news bears.

SOMETHING in my final drive broke loose. I haven't opened her up as of yet, but I have a feeling once I do that I'm gonna be here again and again looking for advice, and maybe y'all could use a little know-how on what's going on in there too.

I'll be uploading pictures of my progress here to have something to laugh at when I'm finished. If you all have ever torn up your final drive and ego at the same time, feel free to commiserate.

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post #2 of 20 (permalink) Old 08-15-2018, 11:41 PM
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Dig in! We'll be watchin'!

Sorry 'bout your bad event, though.

Probably a case of grease worms.
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post #3 of 20 (permalink) Old 08-16-2018, 02:01 AM
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I never learn anything here unless somebody's had a bad day and decides to post something! Good luck with the tear-down.
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post #4 of 20 (permalink) Old 08-16-2018, 02:21 AM Thread Starter
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EDIT: I don't know how to upload the correct image. I'm looking at the Final Gear page, mostly the 13101a assembly.

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Originally Posted by Thorn View Post
I never learn anything here unless somebody's had a bad day and decides to post something! Good luck with the tear-down.
Having not pulled anything yet (again, this happened 730pm with the sun going down) I'm fairly certain I'm looking at replacing the rear gear that redirects the rotation to the wheel. Looking everywhere I can, I can find NO PARTS NUMBER for what I'm talking about.

This place is going to be my HVAC while I try to make odds and ends line up. While I'm heated, I'll say this:

WHAT IS THE PARTS NUMBER?

92055c has a line right to it. I'm almost sure that's what I'm going to be looking at. Almost. At this point it's a matter of just trying to figure out what's going on with the lack of label. Anybody have a good time with this in the past?
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post #5 of 20 (permalink) Old 08-16-2018, 02:44 AM
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Quote:
Originally Posted by TheModernLemonade View Post
EDIT: I don't know how to upload the correct image. I'm looking at the Final Gear page, mostly the 13101a assembly.



Having not pulled anything yet (again, this happened 730pm with the sun going down) I'm fairly certain I'm looking at replacing the rear gear that redirects the rotation to the wheel. Looking everywhere I can, I can find NO PARTS NUMBER for what I'm talking about.

This place is going to be my HVAC while I try to make odds and ends line up. While I'm heated, I'll say this:

WHAT IS THE PARTS NUMBER?

92055c has a line right to it. I'm almost sure that's what I'm going to be looking at. Almost. At this point it's a matter of just trying to figure out what's going on with the lack of label. Anybody have a good time with this in the past?
Is this what you're looking for?

https://www.kawasakipartshouse.com/o...aft-final-gear
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post #6 of 20 (permalink) Old 08-16-2018, 02:57 AM Thread Starter
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Quote:
Originally Posted by kryptonianjorel View Post
Yes and no. I'm looking at the same diagram (exactly) and I want the part number for what 92055c is connected to. It's all a load of bull until I pull it apart anyway.
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post #7 of 20 (permalink) Old 08-16-2018, 08:09 AM
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have you removed the final drive from the swing arm yet? Its a pretty solid unit. More likely the cause is the splines and coupler (42034) and the splines on the input shaft/pinion gear. if thats the case, scour the internet for a replacement (used of course) rear final drive assembly that has good splines, and a new coupler.

its a known problem, someone on the assembly line was sleeping for a few years and didnt get any grease (or minimal) on them during assembly. We recommend inspection of the coupler and splines ANY time the rear wheel is removed.

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post #8 of 20 (permalink) Old 08-16-2018, 08:14 AM
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You probably won't be able to get internal parts for the rear drive. You might have to get a used final drive off ebay or the like. That part looks like it's the input shaft for the final drive, and also functions as the driving hypoid gear that drives the whole assembly. Is that correct? The splines on the outside of the final drive (where the driveshaft connects to the final drive) are a common failure point, unfortunately, but if it's something internal that'd be interesting and you might be able to piece together a used final drive with your current one.

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post #9 of 20 (permalink) Old 08-16-2018, 08:18 AM
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BTW

https://www.ebay.com/itm/1995-kawasa...4AAOSwRF1bbcwj

this is a great deal! the splines look good, and $75 shipped for a final drive is sweet. If I were you I'd buy this and replace the oil in it and bolt it on. so long as your driveshaft splines are in good shape, that is.

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post #10 of 20 (permalink) Old 08-16-2018, 10:39 AM Thread Starter
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Holy mackerel. Forum to the rescue.

So yes, I've just removed the rear wheel, final drive, baffles of the exhaust, one spring... I haven't slept. That all being said, I see what's being said about it being a pretty solid unit. I'm just now going to dive into the schematic to see what is and isn't in place, and lock on to what the problem is.

Thanks all for the support, I'm in deeper than I have been before, and as exciting as this is to *learn,* I really just can't wait to get this SOB running happy again.

More updates to follow.
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