Bleedin oil lines and ultrasonic cleaning??

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Kijmpe
Posts: 52
Joined: Sat Dec 18, 2021 12:42 pm
Location: Den Helder, Holland

Bleedin oil lines and ultrasonic cleaning??

Post by Kijmpe »

Hi there,

I know there is tons of content about the check valves, stuck open or closed.

Has anybody out here ever just dumped 'em in the ultrasonic cleaner with Tickopur 33 to maybe get them going again?

Anybody got any succes with that?

Thanks, hopeful me...
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Kijmpe
Posts: 52
Joined: Sat Dec 18, 2021 12:42 pm
Location: Den Helder, Holland

Re: Bleedin oil lines and ultrasonic cleaning??

Post by Kijmpe »

Flushed the lines with brake cleaner several times, filled them up with brake cleaner and left them to soak.

Then I put the complete set (spider, lines and checkvalves) in my U.S. cleaner and ran it for about an hour @ 50 degrees Celsius in water with Tickopur R33.

Took them out, flushed with water using a seringe, then flushed them with brake cleaner again.

Checked the valves by blowing and sucking on the banjo's with my mouth.
They seemed to work.

Blew them out with compressed air very carefully @ maximum of 5-10 psi.

Flushed them with clean 2-stroke oil, filled them up and hung the lines with the spider upwards and a clean newspaper underneath to be able to see if and which checkvalve would still leak.

No oil underneath after hanging for an hour.

Doubted myself so flushed/filled the lines up with oil again while hanging and left it again for an hour or so.

Still no oil.

Will leave them hanging and check again tomorrow.
I'm hopeful...
teazer
Posts: 1035
Joined: Mon Mar 07, 2011 8:10 pm
Location: Chicago

Re: Bleedin oil lines and ultrasonic cleaning??

Post by teazer »

If they hold air for an hour they are good as they can get.

Low pressure air is OK, but people often use high 80-100psi and that jams the balls inside the springs and they never work after that.

Sounds like you got the job done
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Kijmpe
Posts: 52
Joined: Sat Dec 18, 2021 12:42 pm
Location: Den Helder, Holland

Re: Bleedin oil lines and ultrasonic cleaning??

Post by Kijmpe »

Came into my workshop this morning and saw a tiny drop of oil on 2 banjo's.
No drops on the newspaper so still hopeful.

Maybe I'll repeat the whole exercise to try and get these last 2 to close properly as well.

Or is a little drop in say 10 hrs acceptable?
teazer
Posts: 1035
Joined: Mon Mar 07, 2011 8:10 pm
Location: Chicago

Re: Bleedin oil lines and ultrasonic cleaning??

Post by teazer »

I would rate that as a success.
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