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  #1  
Old 08-18-2018, 02:31 PM
Ed_Wischmeyer's Avatar
Ed_Wischmeyer Ed_Wischmeyer is offline
 
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Location: Savannah, GA
Posts: 774
Default Pneumatic squeezer problem

So Iím using my pneumatic rivet squeezer for the first time in maybe 15 years (!). The ram, fully retracted, extends 0.3Ē, and fully extended, the gap (with no set installed) is 0.4Ē. I took the yoke off and the ram out, and itís a fixed ram (non-adjustable). So Iím wondering if the squeezer has something wrong inside causing the ram to be too far extended, all the timeÖ Hopefully Iím doing something dumb that I just donít remember.

There is no manufacturer or model number on the squeezer body. And I do have a full bunch of flat sets of various thickness.

Iíve looked briefly at the Cleaveland too youtube video, and although that reminded me of some things Iíd forgotten, it didnít help solve my problem.

So is there something internal that needs to be looked at? I'm not looking forward to taking it apart but can surely do that. And there are no indications of rust or sticking.

Thanks!
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  #2  
Old 08-19-2018, 08:35 AM
ZachMiller ZachMiller is offline
 
Join Date: Nov 2017
Location: Dallas, TX
Posts: 28
Default

It doesn't have a button that limits the retract stroke, does it? One of mine (I have a tool buying problem) has a button just beneath the yoke that stops the ram from retracting all the way. I guess the idea is that it would be quicker to actuate but when it's engaged the gap is generally too small to get over an unsqueezed rivet, making it useless.

Post a picture if you can.
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  #3  
Old 08-19-2018, 03:46 PM
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Ed_Wischmeyer Ed_Wischmeyer is offline
 
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Location: Savannah, GA
Posts: 774
Default Found the problem

I had a longeron yoke installed in the squeezer, and although it has the same gap as the plain yoke, the base is not as tall, causing the ram to protrude into the gap. When I put the "standard" yoke in, the problem went away.

I guess the longeron yoke is designed for a shorter ram, and I'd either not noticed it before or had forgotten it.
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RV-8 (steam gauges), RV-9A at KSAV (Savannah, GA; dual screen G3X with autopilot, GTN 650)
Previously RV-4, RV-8A, AirCam, Cessna 175
ATP CFII PhD, so I have no excuses when I screw up
2018 dues paid
Retired - "They used to pay me to be good, now I'm good for nothing."
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  #4  
Old 08-19-2018, 04:08 PM
David Paule David Paule is offline
 
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Location: Boulder, CO
Posts: 3,591
Default

While it's not helpful yet, once you get the squeezer operable, get an adjustable ram. Makes gap setting much faster.

Dave
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  #5  
Old 08-19-2018, 08:49 PM
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Ed_Wischmeyer Ed_Wischmeyer is offline
 
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Location: Savannah, GA
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Quote:
Originally Posted by Ed_Wischmeyer View Post
I guess the longeron yoke is designed for a shorter ram, and I'd either not noticed it before or had forgotten it.
I had an appropriate length ram hidden in a tool drawer. Like I said, I'd not used it in 15 years...
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RV-8 (steam gauges), RV-9A at KSAV (Savannah, GA; dual screen G3X with autopilot, GTN 650)
Previously RV-4, RV-8A, AirCam, Cessna 175
ATP CFII PhD, so I have no excuses when I screw up
2018 dues paid
Retired - "They used to pay me to be good, now I'm good for nothing."
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