4pt mount for Bradco 609 to MF 1455

[1stDeuce]

No, it's listed in the owners manual, and on Tractordata.com as Pump: 11.4, Steering: 5.9, Total: 17.3
So I have that going for me.

Many of the Bradco BH's do end up with skid steer mounts, but they are ALL bolted on. Pull the bolts and you find the same bolt pattern behind all of the larger hoes. I'm not aware of any Bradco BH's with welded on mounting setups. Even the 3pt mount just bolts on. You buy the BH, then the mounts for whatever you want to mount it too, be that a tractor, skid steer, or even a truck according to some sites!

I just checked the hoses. All the 1/2" hoses are JIC-8. My bad. But the first SAE fitting out of the pump block is tiny... a -4 I think... it looks terribly small, but I can't put a bigger one in unless I redrill it and thread it larger. I may do that if I end up wanting the hoe to run faster... If it's 11.4GPM at 2500rpm, I should be getting about 7gpm at 1500rpm. If I end up wanting to run it at a higher rpm to get more speed out of the BH, I'll do something, as sending even 7GPM through a 1/4" ID fitting seems pretty restrictive.

And all of the cyls on the 609 are 3" to 3.5" ID. (I was thinking they were bigger because the OD is larger, but I bet the pistons are 1/4" or so smaller, if not more...)

 

[1stDeuce]

Slightly off topic, but it is my thread, so what the heck... Dfkurg's comment about fitting sizes got me thinking... When I run the engine faster than about 1300 RPM, and run the loader, you can tell it works the engine, even doing things like lowering or curling an empty bucket... I bet there's a bunch of undersize fittings in the hoses that feed the loader... I know the hoses are 3/8", and the fittings are -6 at the best. I may up the fittings to -8 where possible. And perhaps the hoses to 1/2", since they'll be quite a bit shorter... I bet the loader will work faster too if the flow isn't so restricted at higher rpm's...

 

[bindian]

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No doubt, and the 609 is supposed to be a stouter version of the 509. (Dipper cyl is bigger, frame is supposed to be a bit heavier, not sure what else...)

I read once the 609 was made for skidsteers and the 509 for tractors. I have the 511 and it has longer boom and stick and slightly larger cylinders. It is a beast. Looking at your photos, it looks like your subframe sides are 1/2 inch. Mine are 3/4 inch thick. What happens when you pick up your tractor's rear end with the hoe and swing the hoe? Is there any feeling of flex?
hugs, Brandi

 

[1stDeuce]

The tractor side of the mount is 5/8". Nothing moves when I pick the tractor up, but if I hook a stump and pull hard, I can get the tiniest bit of movement at the upper mount. So far as I can tell, it's because the 1/2" x 4" stiffener plates that go up to the FEL mounts are deflecting just a little. If I end up breaking them, I'll go up to 3/4" when I remake it, and extend the 3/4" thick part a little farther forward. That should stiffen everything up quite nicely. But I really doubt I'll ever manage to break it...

 

[bindian]

The tractor side of the mount is 5/8". Nothing moves when I pick the tractor up, but if I hook a stump and pull hard, I can get the tiniest bit of movement at the upper mount. So far as I can tell, it's because the 1/2" x 4" stiffener plates that go up to the FEL mounts are deflecting just a little. If I end up breaking them, I'll go up to 3/4" when I remake it, and extend the 3/4" thick part a little farther forward. That should stiffen everything up quite nicely. But I really doubt I'll ever manage to break it...

Happy digging!
hugs, Brandi

 

[dfkrug]

No, it's listed in the owners manual, and on Tractordata.com as Pump: 11.4, Steering: 5.9, Total: 17.3
So I have that going for me.

Many of the Bradco BH's do end up with skid steer mounts, but they are ALL bolted on. Pull the bolts and you find the same bolt pattern behind all of the larger hoes. I'm not aware of any Bradco BH's with welded on mounting setups. Even the 3pt mount just bolts on. You buy the BH, then the mounts for whatever you want to mount it too, be that a tractor, skid steer, or even a truck according to some sites!

I just checked the hoses. All the 1/2" hoses are JIC-8. My bad. But the first SAE fitting out of the pump block is tiny... a -4 I think... it looks terribly small, but I can't put a bigger one in unless I redrill it and thread it larger. I may do that if I end up wanting the hoe to run faster... If it's 11.4GPM at 2500rpm, I should be getting about 7gpm at 1500rpm. If I end up wanting to run it at a higher rpm to get more speed out of the BH, I'll do something, as sending even 7GPM through a 1/4" ID fitting seems pretty restrictive.

And all of the cyls on the 609 are 3" to 3.5" ID. (I was thinking they were bigger because the OD is larger, but I bet the pistons are 1/4" or so smaller, if not more...)

That's a big pump.....definitely want 1/2" hoses and fittings for all the INs, OUTs, and TANKs connections. It is perfectly
fine to use 3/8" (-6) for your work ports where they are intermittant use, e.g. FEL curl and boom.

As for your cyls, I am sure they have at least 0.20" walls. Maybe even 1/4" thick walls. So a 3.5" OD cylinder
could have a piston that is "only" 3.25 OD. That is still plenty big for any hoe attachment on a CUT.

 

[Kernopelli]

I'm not sure if you have tackled the cylinder rebuild yet but if not, I wanted to give you a possible warning. I have a DigIT excavator that uses a Bradco backhoe that I eventually had to rebuild all the cylinders on. The glands on the 609 appear to be the same style as my model, which are recessed aluminum glands in a steel barrel cylinder. Years of corrosion made them impossible to remove. Two local hydraulic repair shops, weeks of penetrant soaking, several styles of gland nut wrenches and a homemade wrench cut from 1" steel with 3/8" pins would not remove them. I used a hand held drill and a chisel to remove enough material to get the first one out. On the rest of them I decided it was easier to chuck them into a 4 jaw chuck and cut them out on my son's lathe. Needless to say, I had to purchase new glands. I am the only reference to this issue I found online at the time, so maybe it was a fluke......I just thought it was worth mentioning.

 

[1stDeuce]

Thanks for the warning Kernopelli. Fortunately for me, every packing nut I've wrenched so far has turned pretty freely. I had to tighten two of them, and the one on the cyl that needs rebuilt broke free easily. Pretty amazing considering this thing sat out in Florida for 15 years or so. I wonder if some of your issue was related to moving the BH in the winter, and getting it covered in road salt... ??

I did spend some time today replacing grease fittings, and got all but three pins to take grease. Probably the first grease it's seen in a decade...

 

[bindian]

I'm not sure if you have tackled the cylinder rebuild yet but if not, I wanted to give you a possible warning. I have a DigIT excavator that uses a Bradco backhoe that I eventually had to rebuild all the cylinders on. The glands on the 609 appear to be the same style as my model, which are recessed aluminum glands in a steel barrel cylinder. Years of corrosion made them impossible to remove. Two local hydraulic repair shops, weeks of penetrant soaking, several styles of gland nut wrenches and a homemade wrench cut from 1" steel with 3/8" pins would not remove them. I used a hand held drill and a chisel to remove enough material to get the first one out. On the rest of them I decided it was easier to chuck them into a 4 jaw chuck and cut them out on my son's lathe. Needless to say, I had to purchase new glands. I am the only reference to this issue I found online at the time, so maybe it was a fluke......I just thought it was worth mentioning.

I've rebuilt 3 cylinders on my 509 and nothing like that. I have used it regularly since new in 2007. Do you have water in your hyd. fluid?
hugs, Brandi

 

[bindian]

What's going on? I can't edit and correct posts either. I wanted to edit post #19 and say mine has alum. but it was a shiny as new when I pulled my cylinders apart.
hugs, Brandi