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Ideas on what this is used for??

Rickster

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Jun 26, 2005
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SE PA
SnapOn V21A. Any ideas on what it's used for??

802983_228_full.jpg
 
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chad s

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Apr 3, 2006
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As already stated. Valve adjuster. I had 3 of them and sold 2 on eBay got about 50 bucks each.

Thats actually top dollar, good job. Did they have the knob in the above photo, or was it a round knob (no bumps) with knurling, and a hex drive around the center flat driver?

The 1920's ones had the round knob, and used special hex drive sockets, and the 30's ones used a larger hex drive, and then the 40's and 50's ones used a 1/2" square drive.

There is also a T handled one that was made for Pratt and Whitney.
 
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russlaferrera

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Nov 24, 2006
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Central Virginia
Valve adjustment. Mostly on GM 6 cylinders. The screwdriver tip on the tool was used to adjust the screw on the rocker arm. The 1/2" square is for the socket that you added on the tool, to loosen/tighten the nut.
 

Uncle Buck

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Mar 7, 2005
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Damn, all those guys beat me to it! Several companies sold versions that looked like one another including Plomb.
 

jimvannoy

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Oct 30, 2006
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Mississippi
Thats actually top dollar, good job. Did they have the knob in the above photo, or was it a round knob (no bumps) with knurling, and a hex drive around the center flat driver?

The 1920's ones had the round knob, and used special hex drive sockets, and the 30's ones used a larger hex drive, and then the 40's and 50's ones used a 1/2" square drive.

There is also a T handled one that was made for Pratt and Whitney.


All mine were/are like the one pictured.
 
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