Let's dig the final drive - Page 2 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Transmission / Rear End
\ Chattering Clutch? Transmission Trouble?
Rear End Woes? Splines Shot? Discuss it here!

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post #11 of 20 (permalink) Old 08-16-2018, 10:48 AM Thread Starter
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Oh. Yeah. The splines.


Damn.
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post #12 of 20 (permalink) Old 08-16-2018, 11:59 AM Thread Starter
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Aside from the fact that I can't yet figure out how to upload a proper photo, yes, the splines of the input shaft/hypoid gear are indeed worn to a very severe degree (at the contact of the driveshaft, for clarity sake).

What I don't know now is how to be sure that the splines on the driveshaft end (that same point of contact) aren't also worn to a crisp. To my untrained eye, they all look even, accepting that they all look... short. There is a consistency to their height, lower towards the final drive with a slight sudden raised continuation towards the gearbox, and there are no exceptionally shiny faces that would indicate having been unreasonably cut from a standard height. The same schematic pertaining to the final drive includes a mediocre depiction of the driveshaft, which, in the illustration, doesn't seem to show and alteration in height at this set of splines.

------------------------------------------------------------------------------------------------------------------

^^^That's what I thought.

Upon referencing Fergy's badass "Spline Lube Procedure" I am more than certain that the driveshaft coupling is getting replaced as well. Thanks for that awesome write-up, Fergy.

https://www.vn750.com/forum/26-trans...-part-1-a.html

Once this is all said and done, I'm sure it'll be worth the grief. Right?
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post #13 of 20 (permalink) Old 08-18-2018, 01:47 PM Thread Starter
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Quote:
Originally Posted by ubertalldude View Post
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.
This is an awesome offer, thanks for looking out. My biggest concern is if the '95 drive is compatible with my '03 VN. eBay is saying no-good, but I'm thinking that's due to a lack of form completion on the seller's end. To Google!

EDIT: BOUGHT THE DAMN THING

Last edited by TheModernLemonade; 08-18-2018 at 02:06 PM.
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post #14 of 20 (permalink) Old 08-18-2018, 05:41 PM
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you have nothing to worry about for compatibility across years.. all vn750's used the same drive train (minor exception for euro models, some may have had different gear ratio, but direct bolt on otherwise).

the short and skinny of the differences are:

85 only, 700 CC's due to harley tax, 86 on where 750's. other than the bore of the jugs, engines where mechanically the same
up to around 90 or so, self cancelling turn signals, makes the left controls slightly different, and some additional wiring for that, but main harness is the same
mid 90's I think, went from a square master cylinder for front brake to round, interchangable I believe, but I think you need early model brake lever for the square one

and the biggest one.. throughout the production run, every year or so, they changed the paint color/scheme

2005 VN750

Sold 11-27-17
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post #15 of 20 (permalink) Old 08-18-2018, 07:03 PM
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My '03 has factory 4-way flashers! Pretty sure that was a change from the earlier models, but I don't know when that would have happened.

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post #16 of 20 (permalink) Old 08-19-2018, 01:41 PM
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Quote:
Originally Posted by TheModernLemonade View Post
This is an awesome offer, thanks for looking out. My biggest concern is if the '95 drive is compatible with my '03 VN. eBay is saying no-good, but I'm thinking that's due to a lack of form completion on the seller's end. To Google!

EDIT: BOUGHT THE DAMN THING
That is the wrong Final Drive for a 750. That one is for a VN1500

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post #17 of 20 (permalink) Old 08-21-2018, 01:38 AM Thread Starter
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That is the wrong Final Drive for a 750. That one is for a VN1500
This is going to funny, eventually.
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post #18 of 20 (permalink) Old 08-24-2018, 03:55 PM Thread Starter
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Okay then. Final drive is here, it's the right one, and all is good.

The newest problem is just my own hands. Getting the circlip back IN the coupler is a huge effort, and I gotta blame the pliers I'm using. Just ordered a new pair.
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post #19 of 20 (permalink) Old 09-09-2018, 11:24 AM Thread Starter
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Right. I got everything with the final drive figured out, took it apart, put it back together, the damn thing works.

My rear brake is soft now. Like, REALLY soft. I haven't taken it apart again to see what happened in there, or figured out what may be failing on the outside. Life's curveballs.
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post #20 of 20 (permalink) Old 09-09-2018, 11:59 AM
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I'd try adjusting it first. It's possible that's all you need to do.

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