Re: Solved: Vibration Damper Removal - 1928 5-26

Posted by 28Pack526 On 2014/4/19 2:38:36

One final post here to wrap up the thread: After contacting every possible parts source I could think of, I determined that the friction discs are unavailable and I'd need to make some for the damper if I wanted it to be functional. I ordered a sheet of Phenolic resin based on easyed's suggestion from Ridout plastics, knocked up some cad drawings of the discs, and borrowed some time on my good friend's CNC machine...

<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_535226c49905d.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_535226c49905d.jpg"></a>
<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_535226f78a6f9.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_535226f78a6f9.jpg"></a>

From there, it was a trivial affair to install the assembly as follows: hub -> friction disc -> inner flywheel & springs -> outer flywheel -> friction disc -> drive pulley.

<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_5352272978e6f.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_5352272978e6f.jpg"></a>
<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_53522735aefd3.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_53522735aefd3.jpg"></a>

Once installed, however, a question arose that isn't well explained in the service manual (see step 4...).

<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_535227673754a.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_535227673754a.jpg"></a>

How exactly does one "Adjust damper standard"? From the vague description and included picture of special tool ST 143, I assumed by torquing the drive pulley retaining nut down until the damper released at the prescribed force (10 - 11 lbs). That meant I needed an ST 143... I took some rudimentary measurements of the picture and knocked up the following with a strap wrench, a 1x1, and a digital fish scale. :)

<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_5352278fa2c56.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_5352278fa2c56.jpg"></a>

It turns out, all of that diligence was ultimately unnecessary. Torqued down completely, my damper releases at ~10.2lbs... right in the prescribed range!

<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_535227b226636.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_535227b226636.jpg"></a>
<a href="https://packardinfo.com/xoops/html/uploads/newbb/42808_535227c885220.jpg"><img src="https://packardinfo.com/xoops/html/uploads/newbb/thumbs/42808_535227c885220.jpg"></a>

That's it! I still have another sheet of phenolic if anyone ever needs a couple of these machined for their damper...

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