Home -> Vans Air Force topic: Pneumatic Rivet Squeezer questions

Author: "_lr_" <_lr_@...> Time: Mon Sep 1, 2003 6:10 am PDT Link

Just aquired a used pneumatic rivet squeezer (CP knockoff), and I
seem to be having a bit of trouble, so I'm hoping for some advice.

When I first tried the unit it cycled a few times, and then jammed in
the piston fully extended position. I was able to disassemble it and
shove the pushrod above the plunger back into position. A few repeats
of that cycle convinced me that I'm almost certainly doing something
wrong. Questions:

Do these things NEED to have a rivet set in place so they don't
extend beyond their fully extended position and jam?

Do I need to have a regulator on the air source? What sort of
pressure should I be setting?

Is there any periodic maintenance I should be doing before using the
tool regularly?

Is there anthing else I should know about this tool? I'm a complete
neophyte when it comes to air tools, so any replies would be valuable.

Thanks,

Larry
(RV-10 SN 22 empecone on order)


Author: "Rick Galati" <rick6a@...> Time: Mon Sep 1, 2003 9:07 am PDT Link

Larry,

It is not likely you are doing anything wrong. Pneumatic squeezers
like most air tools, only require a drop or two of oil periodically
to assure reliable service. Air pressure is likely not an issue,
especially if you are operating in the 90 lb. range. I would suggest
that your used squeezer requires an overhaul. The problem you
describe was not at all unusual in the well-used pneumatic squeezers
of every stripe I had daily access to in the workplace. By far, the
most common failure in industrially used squeezers is simply worn out
O-rings. I would first contact Bob Avery for his opinion. I know two
individuals who sent their squeezer problems to Bob for repair. One
guy didn't even buy his squeezer from Avery, yet Bob fixed him up
right up. Can't say if Bob works on CP clones or that your problem
will be as easily solved but it is a place to start.

Rick Galati RV-6A FWF

--- In vansairforce@yahoogroups.com, "_lr_" <_lr_@y...> wrote:
> Just aquired a used pneumatic rivet squeezer (CP knockoff), and I
> seem to be having a bit of trouble, so I'm hoping for some advice.
>
> When I first tried the unit it cycled a few times, and then jammed
in
> the piston fully extended position. I was able to disassemble it
and
> shove the pushrod above the plunger back into position. A few
repeats
> of that cycle convinced me that I'm almost certainly doing
something
> wrong. Questions:
>
> Do these things NEED to have a rivet set in place so they don't
> extend beyond their fully extended position and jam?
>
> Do I need to have a regulator on the air source? What sort of
> pressure should I be setting?
>
> Is there any periodic maintenance I should be doing before using
the
> tool regularly?
>
> Is there anthing else I should know about this tool? I'm a complete
> neophyte when it comes to air tools, so any replies would be
valuable.
>
> Thanks,
>
> Larry
> (RV-10 SN 22 empecone on order)


Author: "Matthew" <mbrandes@...> Time: Mon Sep 1, 2003 9:09 am PDT Link

Larry,

I just started using one myself and while I haven't used it
extensively yet, here are some thoughts.

: Keep it well lubricated. Do you have some air tool oil? If not,
get some. You put a few drops in the air inlet and that keeps things
lubed internally.

: Keep the piston lubricated too. My Avery rivet squeezer came with
a tube of 'Lubriplate' that I use every now and then to keep the
plunger lubricated.

: Check out the latest SoCal Newsleeter, I think they have an article
in there on pnuematic squeezers. If I remember correctly, it says to
use 90PSI. http://socal_wvaf.rvproject.com/id39.htm

I've yet to have to freeze up. (The builder I borrowed it from
warned me about it though, saying it did it to him.)

Matthew
RV-9A Wings
www.n523rv.com

--- In vansairforce@yahoogroups.com, "_lr_" <_lr_@y...> wrote:
> Just aquired a used pneumatic rivet squeezer (CP knockoff), and I
> seem to be having a bit of trouble, so I'm hoping for some advice.
>
> When I first tried the unit it cycled a few times, and then jammed
in
> the piston fully extended position. I was able to disassemble it
and
> shove the pushrod above the plunger back into position. A few
repeats
> of that cycle convinced me that I'm almost certainly doing
something
> wrong. Questions:
>
> Do these things NEED to have a rivet set in place so they don't
> extend beyond their fully extended position and jam?
>
> Do I need to have a regulator on the air source? What sort of
> pressure should I be setting?
>
> Is there any periodic maintenance I should be doing before using
the
> tool regularly?
>
> Is there anthing else I should know about this tool? I'm a complete
> neophyte when it comes to air tools, so any replies would be
valuable.
>
> Thanks,
>
> Larry
> (RV-10 SN 22 empecone on order)


Author: "Glenn Brasch" <gbrasch@...> Time: Mon Sep 1, 2003 10:40 am PDT Link

I read with interest the last two posts about lubricating with oil the pneumatic squeezers. Everything I have read and have been told is NOT to oil them, including my instructions to my unit. The pneumatic squeezers are greased internally, and the oil will break down that grease. My two cents. Glenn in AZ -9A Wings.
----- Original Message -----
From: Matthew
To: vansairforce@yahoogroups.com
Sent: Monday, September 01, 2003 6:41 AM
Subject: [VAF Mailing List] Re: Pneumatic Rivet Squeezer questions

Larry,

I just started using one myself and while I haven't used it
extensively yet, here are some thoughts.

: Keep it well lubricated. Do you have some air tool oil? If not,
get some. You put a few drops in the air inlet and that keeps things
lubed internally.

: Keep the piston lubricated too. My Avery rivet squeezer came with
a tube of 'Lubriplate' that I use every now and then to keep the
plunger lubricated.

: Check out the latest SoCal Newsleeter, I think they have an article
in there on pnuematic squeezers. If I remember correctly, it says to
use 90PSI. http://socal_wvaf.rvproject.com/id39.htm

I've yet to have to freeze up. (The builder I borrowed it from
warned me about it though, saying it did it to him.)

Matthew
RV-9A Wings
www.n523rv.com

--- In vansairforce@yahoogroups.com, "_lr_" <_lr_@y...> wrote:
> Just aquired a used pneumatic rivet squeezer (CP knockoff), and I
> seem to be having a bit of trouble, so I'm hoping for some advice.
>
> When I first tried the unit it cycled a few times, and then jammed
in
> the piston fully extended position. I was able to disassemble it
and
> shove the pushrod above the plunger back into position. A few
repeats
> of that cycle convinced me that I'm almost certainly doing
something
> wrong. Questions:
>
> Do these things NEED to have a rivet set in place so they don't
> extend beyond their fully extended position and jam?
>
> Do I need to have a regulator on the air source? What sort of
> pressure should I be setting?
>
> Is there any periodic maintenance I should be doing before using
the
> tool regularly?
>
> Is there anthing else I should know about this tool? I'm a complete
> neophyte when it comes to air tools, so any replies would be
valuable.
>
> Thanks,
>
> Larry
> (RV-10 SN 22 empecone on order)

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Author: "sam_mourning" <sam.mourning@...> Time: Mon Sep 1, 2003 3:34 pm PDT Link

Ditto what Glenn said. I don't think you are supposed to lubricate
these like you would with a pneumatic drill...i.e., through the air
line. Just a little Lubri-plate on various parts of the set holder
from time to time should do it.

I had the same problem as described here with the squeezer I got from
Avery. Called Bob and he had it fixed and back to me in one day. Was
a failed needle bearing inside the thing.

Sam
www.rv-9a.com

--- In vansairforce@yahoogroups.com, "Glenn Brasch" <gbrasch@e...> wrote:
> I read with interest the last two posts about lubricating with oil
the pneumatic squeezers. Everything I have read and have been told is
NOT to oil them, including my instructions to my unit. The pneumatic
squeezers are greased internally, and the oil will break down that
grease. My two cents. Glenn in AZ -9A Wings.
> ----- Original Message -----
> From: Matthew
> To: vansairforce@yahoogroups.com
> Sent: Monday, September 01, 2003 6:41 AM
> Subject: [VAF Mailing List] Re: Pneumatic Rivet Squeezer questions

> Larry,
>
> I just started using one myself and while I haven't used it
> extensively yet, here are some thoughts.
>
> : Keep it well lubricated. Do you have some air tool oil? If not,
> get some. You put a few drops in the air inlet and that keeps things
> lubed internally.
>
> : Keep the piston lubricated too. My Avery rivet squeezer came with
> a tube of 'Lubriplate' that I use every now and then to keep the
> plunger lubricated.
>
> : Check out the latest SoCal Newsleeter, I think they have an article
> in there on pnuematic squeezers. If I remember correctly, it says to
> use 90PSI. http://socal_wvaf.rvproject.com/id39.htm
>
> I've yet to have to freeze up. (The builder I borrowed it from
> warned me about it though, saying it did it to him.)
>
> Matthew
> RV-9A Wings
> www.n523rv.com

> --- In vansairforce@yahoogroups.com, "_lr_" <_lr_@y...> wrote:
> > Just aquired a used pneumatic rivet squeezer (CP knockoff), and I
> > seem to be having a bit of trouble, so I'm hoping for some advice.
> >
> > When I first tried the unit it cycled a few times, and then jammed
> in
> > the piston fully extended position. I was able to disassemble it
> and
> > shove the pushrod above the plunger back into position. A few
> repeats
> > of that cycle convinced me that I'm almost certainly doing
> something
> > wrong. Questions:
> >
> > Do these things NEED to have a rivet set in place so they don't
> > extend beyond their fully extended position and jam?
> >
> > Do I need to have a regulator on the air source? What sort of
> > pressure should I be setting?
> >
> > Is there any periodic maintenance I should be doing before using
> the
> > tool regularly?
> >
> > Is there anthing else I should know about this tool? I'm a complete
> > neophyte when it comes to air tools, so any replies would be
> valuable.
> >
> > Thanks,
> >
> > Larry
> > (RV-10 SN 22 empecone on order)

> Yahoo! Groups Sponsor
> ADVERTISEMENT

> Online help on this group at:
> http://help.yahoo.com/help/groups/

> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

> [Non-text portions of this message have been removed]


Author: "Chuck Stratman" <Pilot93434@...> Time: Tue Sep 2, 2003 9:48 am PDT Link


When I first tried the unit it cycled a few times, and then jammed in
the piston fully extended position.

I had a similar problem. I used emory cloth wrapped around a #2 pencil and reamed the hole in the yoke to insure a smooth
guide for the piston. Worked like a charm

Chuck

[Non-text portions of this message have been removed]


Author: jacklockamy@... Time: Tue Sep 2, 2003 1:55 pm PDT Link

Also make sure the "ram piston" is installed correctly. It will go against
logic...however you want the FLAT side of the piston facing in towards the
center of the squeezer. When I first got my pneumatic squeezer I
inadvertently installed the ram with the FLAT side facing out to ride along
the flat outside wall of the squeezer (made sense to me at the time....),
piston would stick everytime!

Emailed my buddy Dan Checkoway.... he described how the piston should be
installed.... no more sticking! Works like a charm. Other than my pneumatic
pop-rivet gun (Harbor Freight item #167) it is my favorite tool.

Hope this helps,
Jack Lockamy
Camarillo, CA
RV-7A



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