Clutch flywheel pics and ?'s

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TLCandME

TLCandME

10 Year 15 Year
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Dec 13, 2006
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Alright. Gonna be dropping off the flywheel for resurfacing this week. Pics below. Can anyone point out the two surfaces that need touching up.

I have no idea HOW worn it is - just that it looks worn. Does this look to be past the point of no return?

And one of the arms of the spring clip on the clutch fork is broken off. Does that matter? Seemed to stay on the pivot arm before I took it off - and I didn't break it on removal:)

Thanks,
William
fj40 006.webp
fj40 007.webp
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The first picture is the side that will be resurfaced,the glazed surface,your local shop should be able to tell you if it can still be resurfaced. Hard to tell by picture.

If it were me YES change that spring your talking about that holds the clutch fork in position and every thing else that needs to be changed while in there like: Pressure plate,TO bearing,Pilot bearing,clips for your clutch hub etc...dont forget your clutch centering tool unless you have an extra front inputshaft laying around....good luck
 
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Yep. Got all those other things covered.

Maybe I'll just go ahead and get another cluthc fork.

Ok then, the more I read.... the more confused I become. There were a few threads that mentioned I needed to have TWO sides of the flywheel done. The one side is obvious but I'm not clear on the other.

Thanks,
William
 
From another thread. This is what has me confused:confused: Maybe I'm putting too much thought into this - but I just want to get it right and I have NO idea what "right" is.



A little more info on your part provides another possible issue.

You had the flywheel resurfaced. The question then becomes whether the shop that did the resurfacing realized that they needed to resurface BOTH faces of the flywheel, with a specified distance between them. The 'step' distance is critical, and a worn pressure plate will have to work even harder if they mistakenly only surfaced the inner circle.

When I walk into a shop to have a flywheel surfaced, I ask them to tell me the 'step' height. If they give me a blank stare, I turn around and leave.;)

Best

Mark A.


Thanks,
William
 
Not sure of what other side that could be...other than the pressure plate? since the clutch disc is sandwhiched between the flywheel and PP....i dont think you can re surface a PP?
 
Check this thread for more info on flywheel "step" height. It looks like the two surfaces they are discussing are on the same side, the outer rim, and the flywheel mating surface.

IMHO: It is only critical to surface the one side. Any good machine shop has both the dimensions and the knowledge to determine what needs to be done.

This thread is mainly concerned with the difference between the F and 2F flywheel - you have a '71 (F), judging by what you say, and the clutch fork. You should have the "3 fingered" clutch system..

https://forum.ih8mud.com/40-55-series-tech/101191-flywheel-step-measurments-faq.html

Rocky
 
Thanks Rocky! I had stumbled across the .020 measurement but did not realize it was for a 2F. I will just ask them to resurface it so that there is a 16mm step height - they should know how it all relates.

William
 
This is what my brothers ( airrider ) looked like Before & after
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When installing the flywheel to the crank, is there only one way (idiot proof) to install it so the timing BB aligns in the right orientation to number 1 TDC? Or is there a special procedure to use? Haynes just states install flywheel.
 
Let us know the values you recommed.....

From the FAQ (thread posted above)

These are the step measurements on the F style flywheel and the 2F style flywheel...

F Flywheel uses the three-finger pressure plate: .630" step or 16.002mm
2f Flywheel uses the diaphragm style pressure plate: .020" step or .508mm

I have a 2F Flywheel in my garage I can measure in a few days, my F flywheel is inacessible, it's all bolted up in my truck. If you have numbers, please post 'em up.

Rocky
 
Rocky_LC said:
These are the step measurements on the F style flywheel and the 2F style flywheel...

F Flywheel uses the three-finger pressure plate: .630" step or 16.002mm
2f Flywheel uses the diaphragm style pressure plate: .020" step or .508mm

Rocky
Click to expand...


ok, looks like I was wrong. That measurement just seemed to be too large but I guess its really that big of a step. I've pulled a F flywheel once and it was not going back in the truck so I guess I wasn't paying attention. I didn't realize the F and 2F flywheels were that different.
 
The flywheel step dimensions provided in the Frequently Asked Questions list are correct and accurate....
 
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