Picked Up A Seneca Aspen Cheap

[Ronno6]

OK.
The check valve leaks out thru the fill probe port.......
So,

I'll make a plug w/2 O-rings ala the fill probe, but without the air hole.
Fill the tube, remove the probe and insert the plug.
Screw the cap back on...where's it gonna go??

Could even drill an air hole and plug with a set screw plug out the end in case pressure needs to be vented to remove,,,

Just thinking out loud.............

[Ronno6]

HOT FLASH !!!

The balancer tube check valve O-ring is a 102 inch size 90 durometer......
At least,that is what they use at Air Venturi...........

But....AV indicated that removal of the old one may be a challenge........

So, the cure may be in sight!!

[Ronno6]

One tip the AV tech gave me was to assemble in a manner that doesn't make sense to me...
The first part into the tube end is the spring, then the O-ring, then the ball !!
WOW!!
He said that the ball will wind up between the O-ring and the spring, ala the egg in the bottle trick.
But if assembled spring, ball, then O-ring,the ball will get stuck......
Dunno if that's on account of the substitute O-ring or what.

I guess I'll assemble it as directed and hope for the best.

[SILENT SQUIRREL]

One tip the AV tech gave me was to assemble in a manner that doesn't make sense to me...
The first part into the tube end is the spring, then the O-ring, then the ball !!
WOW!!
He said that the ball will wind up between the O-ring and the spring, ala the egg in the bottle trick.
But if assembled spring, ball, then O-ring,the ball will get stuck......
Dunno if that's on account of the substitute O-ring or what.

I guess I'll assemble it as directed and hope for the best.

Hello
Ron
To make sure I understand which parts you are working on will you please identify them on the Assembly Instructions folder?
Please use page number and the number on the diagram.
Thanks
Edward

[Ronno6]

Page 14
Parts 18,19,20

[SILENT SQUIRREL]

Page 14
Parts 18,19,20

Aha!
Thanks Ron
So, part #20 is actually the same O-ring (CS, ID, OD, Hardness, & part number) that Robert Madhatter is looking for.
Page 12 #4

Here are 2 from the O-RING STORE that are very close in metric dimension.
It's good to know Air Venturi agrees

Model: B90103
Dimensions: 3/32"ID X 9/32"OD X 3/32"CS
Actual: 0.081"ID X 0.103"CS
Metric: 2.06mm ID X 2.62mm CS

Model B90104
Dimensions: 1/8"ID X 5/16"OD X 3/32"CS
Actual: 0.112"ID X 0.103"CS
Metric: 2.84mm ID X 2.62mm CS

I actually ordered some last week, but goofed and got 70 Duro instead of 90
Oops!
They arrive soon.
Edward

[Ronno6]

AV actually uses a B90102........a tad smaller.. just what I was told.

[Ronno6]

AV actually uses a B90102........a tad smaller.. just what I was told.

I actually got the old one out.
All is clean andawaiting new O-ring foe (hopefully) FINAL assembly......

[SILENT SQUIRREL]

AV actually uses a B90102........a tad smaller.. just what I was told.

OK
B90102
When I order the other 9o's I will get that also
Thanks for the heads up, Ron
Edward

[Ronno6]

I believe I have been beaten........
I replaced the O-ring in the balancer tube fill port ball check valve and the thing now REALLY leaks...but I believe it is
between the tube itself and the tube extension(in which resides the ball check.)

Seems like I'm cutting o-rings when installing that part.
I even inserted it from the far end and pushed all the way to the other end...no dice.
Maybe I am damaging them with my fingernails when I put the O-rings in their grooves.
Tho they were OK the first time I did it...
Dunno.

I have sent AV a service request to send the tube aasy in to be sealed..........

The ONLY good thing about beating your head against a wall is.....it feels good when you stop.......

if I EVER encounter another AV PCP, I will hold my hands against my temples and run away screaming....

[Madd Hatter]

It would be hard to cut a 90 hardness with your finger nails.

[Ronno6]

i gotta think it is the itty bitty O-ring of the ball check that is the problem.......
I think I was led astray.......Can't believe the AV guy would do that, but........
That 102 O-ring is too small.......the 103 would be a closer fit.
I don't think the O-ring is sealing air from the threads of the fittings, and air is escaping around the threads.
I'll put some teflon tape on the threads to see if it slows the leak down.
Dunno..........(sigh..)

[SILENT SQUIRREL]

i gotta think it is the itty bitty O-ring of the ball check that is the problem.......
I think I was led astray.......Can't believe the AV guy would do that, but........
That 102 O-ring is too small.......the 103 would be a closer fit.
I don't think the O-ring is sealing air from the threads of the fittings, and air is escaping around the threads.
I'll put some teflon tape on the threads to see if it slows the leak down.
Dunno..........(sigh..)

Ron
I have some 103 and 104 O-rings.
They are 70 durometer, not 90
But if you would like to try them for fit, PM me with your address and I'll send you a few

The same goes for you too, Robert
Edward

[Ronno6]

Today is a new day...thank goodness.

The teflon tape wrap almost stopped the leak.
Water testing shows 1 bubble every 5-7 seconds or so.
The ball checkvalve is holding.
I am on the right track.
An additioinal wrap might fix it, but that's not who I am...
I would rather fix the problem than the symptom, especially if this critter has
the potantial to wind uo in the hands of a friend.
So I will try more appropriately sized O-rings and cross my fingers...

[Ronno6]

This rifle has beaten me.........NOT an easy thing to do.
There is mych that I do not know or understand avout its design amd operation.
After replacing the exhaust valve and resealing the balancer tube. the rifle
will charge up and shoot.
However, after leaving it charged for several hours, it will bleed down
from 3000# to about 2100#, where it will stabilize.
But.........
Opening the pump arm is almost impossible, and, if you DO get it open, it is impossible to close.
Even after releasing the reservoiur pressure with the bleed screw, and bleeding the balancer tube air, the
arm is very difficult to close.
Dunno.........

I believe there is a check valve that prohibits air from backfeeding from the reservoir into thr pump.......
That would be my next target........probably more O-rings being brittle.......

I have contacted AV for some idea of a price to refurb.
Or, I may sell for parts.
So depressed...........

[Madd Hatter]

It's the check valve. That's what mine was doing when I took it apart 4 YEARS ago.😡

[SILENT SQUIRREL]

[/quote]

This rifle has beaten me.........NOT an easy thing to do.
There is mych that I do not know or understand avout its design amd operation.
After replacing the exhaust valve and resealing the balancer tube. the rifle
will charge up and shoot.
However, after leaving it charged for several hours, it will bleed down
from 3000# to about 2100#, where it will stabilize.
But.........
Opening the pump arm is almost impossible, and, if you DO get it open, it is impossible to close.
Even after releasing the reservoiur pressure with the bleed screw, and bleeding the balancer tube air, the
arm is very difficult to close.
Dunno.........

I believe there is a check valve that prohibits air from backfeeding from the reservoir into thr pump.......
That would be my next target........probably more O-rings being brittle.......

I have contacted AV for some idea of a price to refurb.
Or, I may sell for parts.
So depressed...........

Ron
Those03 0-rings that fit the valve you were working on should fit the check valve
They are listed as the same parts # in the Assembly Instructions
Stiff pump is usually diagnosed as a bad seal in the pump.
And common wisdom on the net says that seal should be replaced by a stack of 3 #006 BUNA or VITON O-rings
Some folks recommend URETHANE
I have not done this job
Just read about it
You can find info on this task in a GTA and AGN search
If I find the links I saved I'll PM them to you
Edward

[Ronno6]

It's the check valve. That's what mine was doing when I took it apart 4 YEARS ago.😡

The 103 O-ring from Silent Squirrell did the trick on the balancer tube............2 more for the pump check.
Is it difficult to get to them?

There's also an O-ring on the OD of the check valve tube..........different from any other, of course.....

NOTE: the pump works fine when not fighting back pressure............

[avator]

So glad I got rid of the Freedom and the Aspen before they failed.

[SILENT SQUIRREL]

It's the check valve. That's what mine was doing when I took it apart 4 YEARS ago.😡

Robert
I sent Ron some O-rings I thought might fit the check valve
He has found that #003 fits
If you go to The Oring Store and call up a 003 Buna you will find that the actual metric measurements are very close to the part in the Assembly Instructions.

https://www.theoringstore.com/store/index.php?main_page=product_info&cPath=367_29_28&products_id=1425

Have you tried these in your Aspen?

Edward