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[SmokeyJoe]

I have a 2012 Road Glide and want to change the primary oil with the front wheel chocked and the bike upright. If I fill to the bottom lip will I be over filling it enough to have a issue?

[TinSpinner]

If I recall correctly, the primary takes 38 ounces unless you have removed the entire primary cover, then it takes 45 ozs. I'm not sure if the bottom lip is a good indicator, I trust the correct measurement more. You certainly don't want to over fill it as that will cause clutch problems.

[skratch]

if you fill to the bottom lip, you will be overfull.

as said above, just go with the 38oz.

[grc]

I have a 2012 Road Glide and want to change the primary oil with the front wheel chocked and the bike upright. If I fill to the bottom lip will I be over filling it enough to have a issue?

Yes.  The clutch isn't supposed to be immersed in oil, it operates in the mist of oil created by the movement of all the various parts in the primary.  Excess oil on the plates will cause them to stick, and a condition known as clutch drag results.

I haven't looked at the shop manual for a late model bike with the A&S clutch to see what Harley says, but on the bikes with the old diaphragm spring the instructions were to fill only until the fluid touches the bottom edge of the spring.  I think on an A&S clutch that doesn't have a diaphragm spring, I'd just fill until the fluid ouches the bottom of the clutch basket.  Or you could check the manual.  Btw, make sure the bike is level side-to-side when doing the fill and level check.

Jerry

[dayne66]

Clarification........I quart of Amsoil V-twin Primary brings the level up so I can just see the "disc" touching the fluid....OK?

By 'disc'...I mean the lowest circular part of the 'clutch'.

[CVODON]

One quart will not do it. It tells in the owners manual. Check it out.

[dayne66]

One quart will not do it. It tells in the owners manual. Check it out.

That's what I thought....gonna havta wait 'til t'morrow to get another litre.

[grc]

I believe the manual calls for 38 ounces for a drain and fill change, and 45 ounces for a totally dry primary.  As you can see from those figures, the primary doesn't drain completely.  From what I've heard from several people, they also don't seem to drain consistently.  So I'd still recommend filling with one quart first, then add only what it takes to reach the bottom of the clutch plates or spring.

JMHO - Jerry

[EZRIDN]

I believe the manual calls for 38 ounces for a drain and fill change, and 45 ounces for a totally dry primary.  As you can see from those figures, the primary doesn't drain completely.  From what I've heard from several people, they also don't seem to drain consistently.  So I'd still recommend filling with one quart first, then add only what it takes to reach the bottom of the clutch plates or spring.

JMHO - Jerry

Jerry is right...the primary does not drain consistently.   

I just serviced my '03 RK last week and 38oz. (Redline V-Twin Primary Oil) put me just right reaching the bottom of the clutch.  While draining, I also put the bike on the jiffy for a bit and then uprighted for a bit and repeated.  Amazing that more would dribble out upright than on the jiffy.  Sometime back, I took a 4 foot level to see how much slope was on the floor of my garage and found approx. 3/4" slope in that span.  So, whenever I service & doing level-checking, I make sure I have a 3/4" plywood under the downside tire.

[fastfreddy]

Not saying this is rite... I took the derby cover off before I drained mine on my 16, was its first change at 1k, and it was at the opening when the bike was level on the jack. Only refilled with 1qt.

[grc]

Not saying this rite... I took the derby cover off before I drained mine on my 16, was its first change at 1k, and it was at the opening when the bike was level on the jack. Only refilled with 1qt.

If that's the way Harley fills all of them at the factory, I can see why many people have clutch drag symptoms with new bikes.  Hard to find neutral, louder than normal clunk going into gear, etc.  I seem to remember a lot of those complaints over the past few years on new bikes.

Jerry

[ultrafxr]

I must be lucky in that I've never given this much thought and just followed the moco specs on all my bikes - 1 qt for the older models and 38 oz on the newer ones.  I always have it upright on a jack because it is so much easier to remover the derby cover and deal with filling.  Never had any problem finding neutral or shifting.  That's my experience and others may differ of course.

[dayne66]

I should have looked before I drained it...I think there was some clutch drag.....even with clutch in, the bike wanted to move forward a bit...was easy to 'hold back' though.

[CVODON]

I must be lucky in that I've never given this much thought and just followed the moco specs on all my bikes - 1 qt for the older models and 38 oz on the newer ones.  I always have it upright on a jack because it is so much easier to remover the derby cover and deal with filling.  Never had any problem finding neutral or shifting.  That's my experience and others may differ of course.

X2 - I do exactly the same. I add 38oz everytime. I also drain mine with bike in the Condor so the front is a little higher than the rear. Not saying this is a good way to do it, but it is how I do it.

[chicoman]

I have a 2007 se ultra, have the first vers of se comp, and have always put in 48 oz at primary refill, as asked it comes close to the lip when standing straight up. No problems with clutch drag or finding neutral. Had to change stator and comp looked real good, so maybe the extra fluid helps that out. Works for me and will continue this way.