Harmonic balancer nut lock washer? (1 Viewer)

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Hey all! I removed the harmonic balancer to replace the timing cover seal and gasket. Behind the nut was a lock washer, however theres no keyway or notch for the washer tab to go; henceforth the bent lock tab on the washer.
If theres no notch for the lock washer, whats the point? My 2f is Feb 1981, but I'm not the first owner, so who knows why its there.
Whats the collective consensus on this lock washer?

Thanks!

20210207_145923.jpg


20210207_145914.jpg
 
Joined
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Actually, I guess theres a notch in the harmonic balancer itself, rather than the crankshaft. Does the lock washer tab just get bent so it sits in that notch?

20210207_151442_HDR.jpg
 
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My 83 2F didn't have a lock washer. The washers were only used on the earlier motors for some reason, something to do with a different nut and how it fits on the balancer I believe. Looks like you have earlier harmonic balancer and nut so it's probably necessary. Putting the tab in the groove makes sense, it's already bent to fit right?
 
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Well, I know it's an early 81 2f. I think that sort of nut is common for this vintage engine, I just can't ascertain whether or not the lock washer is needed, or was supposed to be there.
If it is, does anyone know the part number? SOR only has the washer up through late 80.
 
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So, did the 2f engines after August 1980 not have a lock washer? My 2f engine manual from 8/80 does not show a lock washer, nor does it mention one in the reinstall of the H balancer.
 
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So, did the 2f engines after August 1980 not have a lock washer? My 2f engine manual from 8/80 does not show a lock washer, nor does it mention one in the reinstall of the H balancer.
I have a '78 FJ40 / 2F and I'm having the same question. My tab like the bent one in your pic is a bit mangled. Trying to determine if I need a new one and if I can get one.
 
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I have a '78 FJ40 / 2F and I'm having the same question. My tab like the bent one in your pic is a bit mangled. Trying to determine if I need a new one and if I can get one.



If your harmonic balancer and nut are from a later year 40 and look like this you don't have/need the washer, if it looks like the one @81fj40 posted a picture of you need the lock washer.


Edit: just noticed you have a 60 but it's still the same.

PXL_20210314_225646496.jpg
 
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Joined
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Nashville, TN
If your harmonic balancer and nut are from a later year 40 and look like this you don't have/need the washer, if it looks like the one @81fj40 posted a picture of you need the lock washer.

View attachment 2614177
Thanks 60 40. Mine is like those pics posted by @81fj40 and the inner tab is too mangled to re-use. Anyone have a suggestion where I can find one? Marks Offroad site says minimum $100 purchase and the only other one I see is in Australia.
 

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