Backhoe Torque spec Ansung/Branson backhoe

[Outlawmoon]

Afternoon everyone!!

I'm looking for the Ansung 860 / Branson BH86 backhoe spool nut/bolt torque specification.

I was just ready to tear my factory spool assembly apart to install another spool for a hydraulic thumb when I realized I didn't have the torque spec to put it back together!!

If anyone knows - please share!!!

Much appreciated!

Thanks!!

 

[ptsg]

Just a little bit before it breaks.

Jokes aside, that's probably a info that only the valve manufacturer may know. If you happen to know the manufacturer of the valve, you can try and find some literature on that.

If you can't find anything, you can always get it tight with a small 1/4" ratchet, which will kind limit how much torque you put on. If you notice any leakage between sections over time, try to get it a big tighter.

 

[ericm979]

For the D3M, the M8 tie rods are to be torqued to 35nm per the catalog. (p43 of http://www.walvoil.com/allegati/catalogo/D1WHEB02_ENG.pdf)

I want to do the same mod for my 760 BH. Let us know how it goes.

 

[Outlawmoon]

Thanks Eric979!!

I also just found the Walvoil SDS100 catalog it also has the specs in it..... Just when I had about given up - two answers in 10 minutes!!!

Thanks folks!

 

[Aquamoose]

Another spool? Now I’m VERY interested! Mind if you can share your progress? I’d like to do that for my BH760. Where did you get your parts from?

 

[Outlawmoon]

Aquamoose -
The original post is here: https://www.tractorbynet.com/forums/build-yourself/125912-custom-hydraulic-backhoe-thumb-23.html

I have since had to source the spool elsewhere so here are my items so far:

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Walvoil - SDS100/Q-101-8L-SAE (Parallel circuit, doubling acting spool w/spring return and lever control) PN: 610155001
Cost: $168.17, Delivery: 9+ weeks

You'll also need the handle.
Their Iten ID: MI63000
Item description: WALVOIL AL01/M10X150 HANDLE


The ram, Chief WX Welded Cylinder: 2 Bore X 10 Stroke - 1.125 Rod;
Search results for "27384"

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I'm only putting in one relief valve and setting it for about 2500psi. The bucket on mine has a relieve pressure of about 3000psi so I didn't feel like I needed two...you may feel different.
UCRV - BoltOnHooks LLC

*****
The mechanical thumb is Branson's own.... I don't have the P/N right off hand I'll have to look for it. but it was something like THUM.....

The rest of the hoses and fittings will get done in the next few weeks....I'm in the middle of putting up another fence section right now....

I'll post when it's done...may be a few week or a month...really got behind here and the summer is fading fast!!

 

[Outlawmoon]

Forgot to add:

You have to trim the sheet metal cover a bit to accommodate the wider valve stack and drill new mounting holes 3/4" wider on each side of existing holes. You also have to get 1 1/2" longer bolts to hold the stack together because of the valve you add in the middle being ~ 1 1/2" thick.

 

[Aquamoose]

Phenomenal! Thanks! I do have the factory thumb and did find a cylinder that fits perfectly. Just a matter of doing the rest. Really glad to get some info from you, it’s greatly appreciated!

 

[Aquamoose]

Can you recheck the link for the other page? It directed me elsewhere.

 

[Outlawmoon]

Sure Aquamoose.... You've commented on Ron50's thumb build back in 2016. Here is the link: https://www.tractorbynet.com/forums/build-yourself/125912-custom-hydraulic-backhoe-thumb-21.html

Ron50's parts list is the 6th post down on this page.

The link I posted is to the thread....sorry....it wasn't the exact page in the thread.