Summit 3rd function O-ring leak

[John T]

Recently having a leak at the top fittings ..... where the quick connect fitting screws into the aluminum body.
It uses an o-ring at the base.....

I've tightened it as far as it will go, o-ring seems good.... but still weeps.....

anyone else encounter a similar leak?

I have been guilty of pushing the button in the wrong direction occasionally... putting line pressure into the system... trying to get better about that....

anyway, I don't like the o-ring seal design... seems like a bad design for a pressurized hydraulic system....

I'm gonna take it apart today and see if I can put some thread sealant on it....

 

[TheOldHokie]

Recently having a leak at the top fittings ..... where the quick connect fitting screws into the aluminum body.
It uses an o-ring at the base.....

I've tightened it as far as it will go, o-ring seems good.... but still weeps.....

anyone else encounter a similar leak?

I have been guilty of pushing the button in the wrong direction occasionally... putting line pressure into the system... trying to get better about that....

anyway, I don't like the o-ring seal design... seems like a bad design for a pressurized hydraulic system....

I'm gonna take it apart today and see if I can put some thread sealant on it....

View attachment 157052

Thats an SAE-08 oring boss port and the gold standard for hydraulic system pressures up to 9,000 PSI.

Tighten the coupler to 40 lb-ft. If it still leaks replace the O-ring. The orings are specials used only for ORB fittings.

4000-08 | 90 Durometer Buna O-Ring for #8 SAE/ORB

Check out the deal on 4000-08 | 90 Durometer Buna O-Ring for #8 SAE/ORB at DiscountHydraulicHose.com

www.discounthydraulichose.com

Thread sealant on an ORB fitting will do nothing except make a mess and possibly contaminate the hydraulic system.

Dan

 

[John T]

Thats an SAE-08 oring boss port and the gold standard for hydraulic system pressures up to 9,000 PSI.

Tighten the coupler to 40 lb-ft. If it still leaks replace the O-ring. The orings are specials used only for ORB fittings.

4000-08 | 90 Durometer Buna O-Ring for #8 SAE/ORB

Check out the deal on 4000-08 | 90 Durometer Buna O-Ring for #8 SAE/ORB at DiscountHydraulicHose.com

www.discounthydraulichose.com

Thread sealant on an ORB fitting will do nothing except make a mess and possibly contaminate the hydraulic system.

Dan

Thanks Dan
I cut the grass this afternoon so I finally had a chance to take it apart since the loader was off....
I cleaned it up and socked down the bottom fitting to 40 ft-lbs and it seemed to do the trick.

There is also an o-ring on the other end for the pioneer? coupler
. I believe it's a JIC
looks like a smaller or I should say "thinner" o-ring.....

anyway... lookin good for now.

appreciate the tip and info.

..

 

[TheOldHokie]

Thanks Dan
I cut the grass this afternoon so I finally had a chance to take it apart since the loader was off....
I cleaned it up and socked down the bottom fitting to 40 ft-lbs and it seemed to do the trick.

There is also an o-ring on the other end for the pioneer? coupler
. I believe it's a JIC
looks like a smaller or I should say "thinner" o-ring.....

anyway... lookin good for now.

appreciate the tip and info.
View attachment 157440 ..

If the adapters have orings on both ends they are ORB to ORB. JIC fittings do mot have orings.

Dan

 

[John T]

If the adapters have orings on both ends they are ORB to ORB. JIC fittings do mot have orings.

Dan

yeah I thought that was odd....
I looked up the kit....
It says the couplers are NPT

Third Function Valve Kit for Kubota BX23S, BX1880, BX2380, and BX2680 Tractors

Free Shipping Third Function Valve Kit for Kubota BX23S Tractors

summit-hydraulics.com

1/4" NPT ISO 7241-B Quick Disconnect Hydraulic Female Coupler

1/4" NPT ISO 7241-B Quick Disconnect Hydraulic Female Coupler

summit-hydraulics.com

I should have taken a pic while the fitting was apart..... but it stopped leaking so thats all that matters.... for now.

 

[TheOldHokie]

yeah I thought that was odd....
I looked up the kit....
It says the couplers are NPT

Third Function Valve Kit for Kubota BX23S, BX1880, BX2380, and BX2680 Tractors

Free Shipping Third Function Valve Kit for Kubota BX23S Tractors

summit-hydraulics.com

1/4" NPT ISO 7241-B Quick Disconnect Hydraulic Female Coupler

1/4" NPT ISO 7241-B Quick Disconnect Hydraulic Female Coupler

summit-hydraulics.com

I should have taken a pic while the fitting was apart..... but it stopped leaking so thats all that matters.... for now.

NPT would have been my first guess but no orings on them either.

Dan