Hydraulic Banjo fittings

[Nickk]

A bango fittings on my hydraulic outlet block are leaking. L3600DT with a 680 loader.
I removed the old crush washers and install new ones; tightened it and the joint leaked. So I torqued it a little more and snapped the bolt.

Any tips on making this type of banjo joint work?
What is max Torque for the banjo bolts (66591-36250)?

I am removing the old bolt and will use all new components.

thanks

 

[Edke6bnl]

I am not saying to do this, but if you heat a copper piece to red hot and let cool it will soften and anneal it.

 

[TheOldHokie]

A bango fittings on my hydraulic outlet block are leaking. L3600DT with a 680 loader.
I removed the old crush washers and install new ones; tightened it and the joint leaked. So I torqued it a little more and snapped the bolt.

Any tips on making this type of banjo joint work?
What is max Torque for the banjo bolts (66591-36250)?

I am removing the old bolt and will use all new components.

thanks

Banjo bolts ate pretty thin by virtue of the through holes. Tjey should sealnwith rflatively low torque.

I would suggest inspecting the sealung surface on the block. It needs to be flat and smooth. I would also suggest using a sealing washer with bonded elastomeric seal.

9500 | Bonded O-Ring Seal | Hydraulics Direct

Buna-N Bonded Seals for BSPP Fittings are engineered for applications requiring resistance to oils fuels and water These seals combine a metallic ring with a rubber sealing face specifically designed to match the 55-degree flank angle of BSPP threads Ideal for general-purpose applications

www.hydraulicsdirect.com

Dan

 

[D2Cat]

Dan, appreciate the link for the seals. I have a banjo bolt on the IP of my Deutz that has TWO banjos on the same bolt and at the end of the bolt it is threaded and has a plug that goes in. In the center of the bolt is also a small spring (like in an old ink pen) and a tapered pin about 1/16" in dia. The purpose is to open the very end to bleed the pump.

I over tightened that little burger and broke the end plug off in the bolt which is a brass! Finding the new bolt was a project. If it presents any leaks I will order some of those seals. Thanks again.

 

[TheOldHokie]

Dan, appreciate the link for the seals. I have a banjo bolt on the IP of my Deutz that has TWO banjos on the same bolt and at the end of the bolt it is threaded and has a plug that goes in. In the center of the bolt is also a small spring (like in an old ink pen) and a tapered pin about 1/16" in dia. The purpose is to open the very end to bleed the pump.

I over tightened that little burger and broke the end plug off in the bolt which is a brass! Finding the new bolt was a project. If it presents any leaks I will order some of those seals. Thanks again.

Your local Parker store probably has those washers on the shelf. Probably going to want more than a buck each....

Dan

 

[Nickk]

Thanks for your input; found a crack in the braze where the line goes into the ring. I have gained some very good experience with Kubota hydraulics (at least on the L3600) thanks to some here on the forum.

THANKS!