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[mzura]

What would be the symtoms of a crank runout problem???

[Hoist!]

What would be the symtoms of a crank runout problem???

The symptoms might come in various forms. Unusual vibration might be one. But unfortunately, most symptoms usually surface with something being broken because of it. Oil pump, cam drive failure, or even losing pil pressure and siezing. But if it's out past allowable limits, you still might not feel anything until something breaks. Personally, I feel it's worth it to know what it is, by having it measured. Either change cams, and you can check it then, at no extra cost. Or pay just to have it done. If it's out of limits, you get to replace the engine before you had a failure. If it's good, at least you know it's good. And maybe even get some new cams! Hoist!

[Unbalanced]

Heard a rumor today and well figured maybe someone else had heard it, but I have NOTHING to back it up with.   The rumor was that the auto chain tensioner might be the culprit or part of it due to ratcheting and not releasing of the chain.    I don't know how much this really holds water, as I have never seen it happen, but thought maybe someone else had or had heard something like this.

Thought it might be worth while in this discussion. 

[Twolanerider]

Heard a rumor today and well figured maybe someone else had heard it, but I have NOTHING to back it up with.   The rumor was that the auto chain tensioner might be the culprit or part of it due to ratcheting and not releasing of the chain.    I don't know how much this really holds water, as I have never seen it happen, but thought maybe someone else had or had heard something like this.

Thought it might be worth while in this discussion. 

If that's the case then the assumption would be that they don't start out "bad?"  Instead are slowly tensioned enough to cause the problem?

Pretty stout little tensioner to bend a crankshaft when all it needs to do is keep a chain snug.  Who knows though.  It is Harley after all.  And it would give them the opportunity to say "no, it's not our assembly or QC during assembly (instead it's our parts....)."

[Talon]

Has anyone see the runout checked? I'm looking at doing it myself, do they use the starter with the plugs pulled, or does that spin to fast? I have a couple of dial indicators and can rig a solid base to the case, just not sure how I want to turn it over?

[Hoist!]

Has anyone see the runout checked? I'm looking at doing it myself, do they use the starter with the plugs pulled, or does that spin to fast? I have a couple of dial indicators and can rig a solid base to the case, just not sure how I want to turn it over?

Here you go Talon, I checked it on Wed. at the dealer. Hoist!

http://www.cvoharley.com/smf/index.php?topic=14831.msg240202#msg240202

[Chief]

Has anyone see the runout checked? I'm looking at doing it myself, do they use the starter with the plugs pulled, or does that spin to fast? I have a couple of dial indicators and can rig a solid base to the case, just not sure how I want to turn it over?

Talon,

I just did this last week. Remove the plugs and put the bike in 6th. elevate the rear wheel and slowly turn it. Watch the indicator for it to bottom out and zero the scale. Slowly rotate the wheel to find the high spot and stop to get your reading. It's real easy.

[Unbalanced]

Talon,

I have had the runout checked 3 times now on the 07 110" and in each case the motor was turned over by hand using the rear wheel to do so.  6th gear.   The spark plugs were removed. 

[Talon]

Thanks unbalanced, that makes sense, was your in spec?

[Unbalanced]

Talon,

All 3 checks showed I was in spec while they varied in number some both up and down, all is still good.

/big sigh of relief

[Texas 103]

Heard a rumor today and well figured maybe someone else had heard it, but I have NOTHING to back it up with.   The rumor was that the auto chain tensioner might be the culprit or part of it due to ratcheting and not releasing of the chain.    I don't know how much this really holds water, as I have never seen it happen, but thought maybe someone else had or had heard something like this.

Thought it might be worth while in this discussion. 

Harry,

I HAD one on my "06 SEUC. When I pulled the cover off just to see how tight the chain was...I got a little nervous  1/8 to 1/4" of play is just too damn tight for my taste...and it was installed to the letter. I put the stock one back on and am going to order an HB 125 from Hayden. It shifted like butter but I just can't see having  the chain that tight.

I'm certainly not an engineer or a even a damn good wrench like some of the others here. My take is that you have bearings in there and it seems like it would put a lot of extra side load on them. I was down at Harley for a transmission issue and I ask the tech about and his reply is " We haven't seen any issues YET>>>>... I think the attitude is that if Harley designed it....it must be good for your bike>>>>  They also sell parts and service...Just my.02>>> Greg     

[djkak]

Heard a rumor today and well figured maybe someone else had heard it, but I have NOTHING to back it up with.   The rumor was that the auto chain tensioner might be the culprit or part of it due to ratcheting and not releasing of the chain.    I don't know how much this really holds water, as I have never seen it happen, but thought maybe someone else had or had heard something like this.

Thought it might be worth while in this discussion. 

The auto adjuster does have some spring travel built in to compensate for excentric sprockets and/or shafts. In the past when the chain was set up too tight with manual adjusters, the nylon shoe would wear prematurly. The auto adjusters have been used since ’06 in the 88” Dyna’s and all ’07 and later Big Twins. I have run one on my 113" without issue for approximately 16,000 miles. It is my sense that if this was a problematic piece Hoist would be all over it.

Bottom line on flywheel shift is that in order to shift a properly manufactured assembly, substantial torque must be applied at the crankpin. I thought that I heard it would take somewhere around 1,300 foot pounds of torque at the crankpin to shift a set of these press-together flywheels.

I shared a perspective on this topic in the Valve Springs thread; it looked like a good place for it at the time. http://www.cvoharley.com/smf/index.php?topic=15087.msg239932#msg239932

djkak