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Dans RV8
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Date: 2-2-2006
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Number of Hours: 1.00
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Manual Reference: Pneumatic Squeezer
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Brief Description: Rebuilding CP214 Squeezer
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We purchased a Chicago Pneumatic 214 Squeezer from eBay. When we got it, it was defective. It was marked with Hughes Aircraft serial number. It could well be older than I am.
Initially, I just put it on the shelf and figured we were out $300. Today, I had a little time to take a look at it.
Dissassembly was remarkably easy considering the general shape of the unit. I was surprised to see that the actual mechanism is based on a leather plunger, much like a bicycle pump. I oiled up the leather gasket and spread it out a little. I cleaned decades of gunk out of the mechanisms.
The next problem was the yoke. The "set holder" was well too short to squeeze anything. Fortunately, I was able to borrow a yoke from the Avery Squeezer which uses CP214 compatible dimensions. The set holder was still too short and is not adjustable. Evidently, the norm is to use washers or other shims under the set to adjust the hight. This worked pretty well.
I was concerned that the main air valve seems to leak a little when the trigger is engaged. This doesn't appear to be a significant problem. When I tested the squeezer on a piece of scrap, I was able to smash right down through the rivet and flatten the dimples. With a little adjustment, I was off riveting the edges of the elevator.
Too bad I didn't try the repair earlier. Anyway, when we are done, this goes back to eBay. We will add $200 in a yoke, so we are probably underwater. The common sell price seems to be around $300. But still, this is fast and consistent.
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The Squeezer with Avery Yoke
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Squeezing the Elevator
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