Idler Shaft Assembly (Reassembly)

[dusty]

I am seeking assistance before I really need it. I am preparing to do a rebuild and am trying to identify all the parts before I start.

In the following picture (idler sheave not shown), where do the two loose parts get installed. I cannot see these parts on my operational Mark V but I assume they are there somewhere.

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That idler shaft looks terrible but it is new. I gotta clean that up before it gets installed.

[wannabewoodworker]

The U-Shaped clip went on after the inner sheave on my greenie to hold it on the shaft. The round clip I don't recognize????

[dusty]

The U-Shaped clip went on after the inner sheave on my greenie to hold it on the shaft. The round clip I don't recognize????

I should have added some information that came with the parts.

One is 504179 (ring-retaining) and the other is 504189 (clip-sheave, retaining).

[nuhobby]

The U-Shaped clip went on after the inner sheave on my greenie to hold it on the shaft. The round clip I don't recognize????

Yes, the U-shaped one will be visible on your old idler shaft (amidst gunk) as soon as you remove the control sheave. Pop that U-clip off, remove the idler sheave, and you'll see the round ring. When putting the (old) idler sheave on the new idler shaft, the round ring goes on the idler-shaft first. It may need to "stretch open" to get onto the shaft. Never fear, the idler sheave will then fit over it and force it nicely back into close contact with its groove. When the idler sheave is on, the U-retaining clip then finally goes on. Oh yes, the Key piece has to be remembered as well.

[mikelst]

I believe the ring goes between the bearing and the idler sheave. As previously stated the u shaped clip goes into the bottom of the idler sheave after it is in place. These will sit in the two groves you see in the idler shaft assembly to capture the idler sheave in place.

[dusty]

Yes, the U-shaped one will be visible on your old idler shaft (amidst gunk) as soon as you remove the control sheave. Pop that U-clip off, remove the idler sheave, and you'll see the round ring. When putting the (old) idler sheave on the new idler shaft, the round ring goes on the idler-shaft first. It may need to "stretch open" to get onto the shaft. Never fear, the idler sheave will then fit over it and force it nicely back into close contact with its groove. When the idler sheave is on, the U-retaining clip then finally goes on. Oh yes, the Key piece has to be remembered as well.

Please confirm whether or not I am reading you correctly.

Using the photo image that I posted in this thread, do the two retainers go into the two grooves in the idler shaft and are they in the correct position with respect to one another?

Thank you for the information.

Wish I had an idler sheave]Looks like that ring clip is going to have to go into and then out of the one groove on its way to the groove it is to live in. That may have me muttering before I am done.
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[mikelst]

Please confirm whether or not I am reading you correctly.

Using the photo image that I posted in this thread, do the two retainers go into the two grooves in the idler shaft and are they in the correct position with respect to one another?

Thank you for the information.

Wish I had an idler sheave]Looks like that ring clip is going to have to go into and then out of the one groove on its way to the groove it is to live in. That may have me muttering before I am done.
[/SIZE]

Dusty

I'm not nuhobby but...

Yes the picture has the components laid out in the proper order.
Yes the ring will have to go over the first grove to the second grove (PIA)
Yes the idler sheave is the only thing that appears to be missing.

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Good luck:)

[mikelst]

Oh yea, I didn't see the key (108) for the floating sheave either. If you don't have that you will need it.

[mikelst]

Just a thought...

It hurt, but anyway.

If you were to use a set of snap ring pliers to spread the opening on the ring clip it might come out of the grove easier than trying to other wise force it. Plus setting the snap ring pliers up to spread when squeezed would make it easier than trying to spread the jaws on some thing like duck bill pliers to spread it open.

[billmayo]

Oh yea, I didn't see the key (108) for the floating sheave either. If you don't have that you will need it.

The Short Key (108) should be bent at one end to fit in the hole on the idler shaft before installing the idler sheave. This prevent the short key from moving as the control sheave slides on the idler shaft. I am seeing headstocks that had a straight short key that ended up binding the control sheave. I have added additional bend to some Short Keys to make sure the short key cannot move once the idler sheave is installed. This binding caused damage to the Control Sheave and the Speed Control Assembly.