Hydraulic Thumb on BH77

[awesome]

Everything is plumbed for the rear valve. Sorry, I hijacked my owned thread to talk about the rear remote.

But I get a leak from there:

That's the section between the PB sleeve and JIC fitting. Am I supposed to have a seal in there? I noticed that the sleeve goes deeper than the lenght of my fitting, so it wont press against the bottom. So am I using the wrong fitting or am I supposed to have a seal in there?

 

[TheOldHokie]

Everything is plumbed for the rear valve. Sorry, I hijacked my owned thread to talk about the rear remote.

But I get a leak from there:
View attachment 152599
That's the section between the PB sleeve and JIC fitting. Am I supposed to have a seal in there? I noticed that the sleeve goes deeper than the lenght of my fitting, so it wont press against the bottom. So am I using the wrong fitting or am I supposed to have a seal in there?

View attachment 152600

If the port in the sleeve is JIC you dont need a seal.

If its BSPP you need a sealing washer.

What say the company that sold ypu the valve?

Dan

 

[awesome]

If the port in the sleeve is JIC you dont need a seal.

If its BSPP you need a sealing washer.

What say the company that sold ypu the valve?

Dan

The valve port is bspp.
The male end of the sleeve, going into the valve is bspp. I dont know what the female end is but there is a bevel inside, just like JIC fittings.

 

[TheOldHokie]

The valve port is bspp.
The male end of the sleeve, going into the valve is bspp. I dont know what the female end is but there is a bevel inside, just like JIC fittings.

Where did you get the sleeve? JIC fittings must bottom out.

My guess is the sleeve is SAE o-ring boss.

 

[awesome]

I got it from princess auto. The inside looks like this


Really looks like a female JIC but much longer. So way the fitting can touch the bottom of the sleeve

 

[TheOldHokie]

I got it from princess auto. The inside looks like this
View attachment 152603

Really looks like a female JIC but much longer. So way the fitting can touch the bottom of the sleeve

SAE port. You need one of these.

 

[awesome]

So end #1 is "sae" ? And I need an oring?
My fitting looks like that except that end #2 is npt for me

 

[TheOldHokie]

So end #1 is "sae" ? And I need an oring?
My fitting looks like that except that end #2 is npt for me

You need an SAE male to JIC male fitting. It comes with the o-ring.

What did you use in the other ports in the valve?

 

[awesome]

I'm sorry, I'm confused. Which part goes in the sleeve? The SAE?

My valve has G1/2 ports. I have bspp-M to npt-M adapters on the other ports.

I want to connect a npt-m hose on my PB port.

 

[TheOldHokie]

I'm sorry, I'm confused. Which part goes in the sleeve? The SAE?

My valve has G1/2 ports. I have bspp-M to npt-M adapters on the other ports.

I want to connect a npt-m hose on my PB port.

I suspect the female port in the PB skeeve is SAE oring boss. Same thread type abd size as JIC .If your hose is male NPT this would work

6900-08-06 | #8 SAE/ORB Male x 3/8" NPSM Female Swivel

Check out the deal on 6900-08-06 | #8 SAE/ORB Male x 3/8" NPSM Female Swivel at DiscountHydraulicHose.com

www.discounthydraulichose.com

Dan

 

[awesome]

Ah, now I understand. Thank you.
I just looked at images of SAE oring boss and yess, it does look like that.
What confused me is that this section looks like JIC

 

[Concept Automation LLC]

The M59 foot pedal never felt right. Added cleats that helped. Also added hand control rod that helped with delicate handing like stacking rocks. Hand control is more intuitive to me but probably a personal preference. Mention as hand control might be easier to fab

Funny the B26 thumb pedal though very similar is more ergonomic OEM design.

Once you experience a thumb, you’ll wonder how you did without.

Yet to get delivery of my used B2650HSDC / BH77, I did get it from Messick's. Having them add the Rear 1st. & 2nd. rear Hyd. option to her before delivery, as it includes the levers in the cab. Adding a Bexpanded Thumb mechanical for now, but see I'd want to put a Hyd. piston on the Thumb in the future.
Reading all the posts, seems best to have a hydraulic control of that cylinder, not a solenoid On/Off. To gently grab rocks and other items etc..
What I do not understand, is that now I will have Hyd. rear ports available. From the Cab, will the Lever control be just On/Off outputs to the rear ports ? If this is true, then I sort of have a rear 3rd. function capability to add. to control the Hyd. Thumb, what would be nice is a valve like the outrigger.
( Related to all Thumbs....Seems they are All too Short in Length, and should at least extend out to the bucket teeth. See when I get mine. I can cut & weld ).