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-   -   why? (https://www.rctruckandconstruction.com/showthread.php?t=6387)

cosworth34677 03-05-2013 02:37 PM

why?
 
why does my hydraulic i just got work if i'm pulling fluid from a dish off to the side but not if i use the tank? i been trying to figure this out all after noon!
driving me crazy. any help thanx

9W Monighan 03-05-2013 03:15 PM

Re: why?
 
Is there an air vent in the tank?

Thenewguy 03-05-2013 04:11 PM

Re: why?
 
You could have vacuum lock when trying to pull from the tank

cosworth34677 03-05-2013 04:32 PM

Re: why?
 
Quote:

Originally Posted by 9W Monighan (Post 80211)
Is there an air vent in the tank?

no , not any i can see.

Quote:

Originally Posted by Thenewguy (Post 80214)
You could have vacuum lock when trying to pull from the tank

that what i thought too. but i didn't want to poke i hole it the tank

9W Monighan 03-05-2013 06:03 PM

Re: why?
 
Why do you think there's a vacuum lock?
Answer: There's no vent.
Think about it, You said it draws fluid from a plate.
The plate is in open air.

cosworth34677 03-05-2013 06:06 PM

Re: why?
 
Quote:

Originally Posted by 9W Monighan (Post 80243)
Why do you think there's a vacuum lock?
Answer: There's no vent.
Think about it, You said it draws fluid from a plate.
The plate is in open air.

yep i think thats the problem. i'll put a vent in it tomarrow. just got to come up with something to keep it vent from leaking if it rolls over.

Radio Control Trucker 03-05-2013 06:56 PM

Re: why?
 
Instead of poking a hole for a vent, just try loosing the cap. It may allow just enough air into the tank to break the vacuum. I found this as a solution while working with 1:1 tractors. :D :D

You can always poke a hole in the tank later if it doesn't work. :eek: :eek:

- RCT

scalelover 03-05-2013 08:04 PM

Re: why?
 
I believe the cap has or is supposed to have a vent section. If your referring to your setup from Spain I'd call him on it.In my email conversations with them the tank was vented for relieving pressure.

--Dan

cosworth34677 03-06-2013 07:30 AM

Re: why?
 
Quote:

Originally Posted by scalelover (Post 80255)
I believe the cap has or is supposed to have a vent section. If your referring to your setup from Spain I'd call him on it.In my email conversations with them the tank was vented for relieving pressure.

--Dan

yep the cap has two fittings but the little plate has three spots. im wondering the third spot is supose to have a hole is something there? i sent him a email.

Quote:

Originally Posted by lostinoz (Post 80263)
Hi Cosworth.

Make sure your connected to the pick up line of the tank and not the return line.
As there is a weight on the end of it or the line in the tank may be bent down and you may have it upside down. The tank that is.

I fell for that one it took me a few hours to work it out. LOL

Regards Ralph.

ya i so that it has a... well rather manly looking thing on the end and and a fittin the just pours back into the tank. i didn't mix up that but took me a few times to remember witch side of the pump pulled the fluid in and witch side was out


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