GuglioLS
Administrator
Jinma354 LE
Posts: 1,276
|
Post by GuglioLS on Apr 6, 2008 9:33:38 GMT -5
Man - Surplus Center's web site is still not working right for me.
They must have banned your IP for shopping at TSC or something. LOL Maybe clear out your cookies and or all offline content? There site seems to be working (ATM).
Larry
P.S.
Well I take that back, seems surplus centers web site is AFU. You must be getting "An error occurred while trying to access the data requested." when trying to click on just about anything. That is going to kill their sales, especially for this weekend. Come Monday, somebody's heads are going to roll.
LG
|
|
|
Post by bradblazer on Apr 6, 2008 23:10:11 GMT -5
Yeah, I think it was Thursday when Surplus Center was completely down then came back up with none of the searches working. That was why I posted the catalog link instead of the page specific to the cylinder I was looking at. Went into town today and picked up some Pioneer style quick connects at NT. They have sets for $14.99 which seems to be half what most places charge. I also picked up some grease fittings since several were not taking grease. I took the hoses off my splitter and put female quick connects on the implement ends, then put the male quick connects on the backhoe valve. I will also put male ends on the splitter valve. That way I can use the same hoses for a variety of implements. The tractor end of each hose has the chinese male end to mate with the rear remotes. Anyhow, that let me hook up the backhoe and try it out. ;D I just put it on the 3ph so I couldn't actually dig but I did get to try out all of the motion. Everything moves smooth and tight. The one malfunction is the swing valve. For some reason the circuit is not completely isolated and it will swing slowly to the right when using other functions. It swings distinctly if I make any other valve relieve by reaching it's limit of motion. The swing uses 2 single acting cylinders that pull in opposite directions. There is a square valve that both lines pass through between the control valve and the cylinders. It is somewhat visible in these views right above the toplink connection. All valves say "Gresen Minneapolis" The sun was going down when I finally got it hooked up so I didn't get any pictures yet. We spent quite a bit of time getting grease to the last pin - the one at the end of the dipper stick. It of course wouldn't take grease through the old fitting so I removed it but the threads were gone and the new one would not thread in. Ended up just pressing it into the hole and getting the grease to finally go in. Later I drilled it out and put in a 5/16 drive-in zerk. The 3ph lifts it well enough but it is definitely a lot of weight. There is one very cool feature that I think I sort of noticed before but didn't think about. The seat pivots with the boom so it's like being in an excavator. It swings a full 180 and it's like a carnival ride! It doesn't look like that is a common feature(?) Having fun, Brad
|
|
GuglioLS
Administrator
Jinma354 LE
Posts: 1,276
|
Post by GuglioLS on Apr 6, 2008 23:44:05 GMT -5
So the seat swings with the boom? That is definitely a unique and very cool feature, I'd love to try that out. I also would loved to have seen the look on your face when you tried it out ;D
The block that the swing cylinders are connected to - could that be some sort of cushion valve? or perhaps it's just a distribution block? Or even some sort of DPOCV? Based on your description of the swing moving slightly all the time, then more pronounced when reaching the limit of travel makes me believe the swing valve is leaking internally. Pressure build up is blowing past the spool feeding the swing cylinder. It may be internally rusty pitted or scored. Maybe take it apart to have a look see. Gresen in a national brand so you should be able to get replacement valves or parts. Spools and spool bodies are matched sets, so it's always best to replace as a set. I.E. the entire valve. Is the main valve cluster a SV valve? (Sectional valve) If so you could just replace the section for the swing and be all set.
Larry
|
|
3RRL
Administrator
Huge Kama
Posts: 2,027
|
Post by 3RRL on Apr 7, 2008 20:00:27 GMT -5
I'll bet Larry is right about the swing valve being faulty. I've seen that happen on presses for my plastic injection molds, where one cylinder (or set) starts to wander like that. At least that's what the symptoms sound like to me. Usually the cylinders are fine. That box you refer to could also be some sort of pressure regulating valve?
Very cool that the seat pivots with the boom and dipper stick too. A very neat thing. Most 3pt hoes I've seen or even read about don't have that feature. It's unique for sure. BTW, the Kama seems qualified to handle it too. It's not out of proportion to my eye.
|
|
|
Post by bradblazer on Apr 7, 2008 20:14:57 GMT -5
Thanks Larry, I took some more pictures tonight. In the light of day there are several external leaks from the valves. I'll probably take the swing valve apart to get a list of the soft parts and then re-do them all. Aired up tires , poor man's 4pt, valve closeups, glad there was clearance for those QC's. Oops, Honey I don't know how that spot got in the driveway. That last pic is how I parked it. It should be stable when I open the valves. I'll block it up too. I took a couple of vids. 30Mb and 20Mb. I'll post them once they download.
|
|
|
Post by bradblazer on Apr 7, 2008 20:18:37 GMT -5
It's alive! (30Mb) I'm gonna have fun with this thing. ;D This one shows me park it and lift it with the 3ph. (20Mb)
|
|
FlyHiFlyLo
Administrator
2007 Jinma 554LE
Posts: 425
|
Post by FlyHiFlyLo on Apr 7, 2008 21:39:53 GMT -5
Man That is cool!
We all need to use YouTube for our videos so they can be added to the CTW TV playlist on the main page.
|
|
GuglioLS
Administrator
Jinma354 LE
Posts: 1,276
|
Post by GuglioLS on Apr 7, 2008 21:45:06 GMT -5
Oh Man that hoe is gianormus! Your gonna be able to do some serious damage what that bad_blazer_boy. Very nice. The videos are fantastic and I see you figured out how to place your photos in rows. It looks much cleaner that way. I'm impressed with the speed of the Hydraulic cylinders with your OEM pump. Looks like that part of it's a go. The swing valve block looks very similar to the cushion / pressure regulator valve Rob installed on his Mile Marker winch. I am willing to bet it's there to limit the swing force against an immovable object. Doing that will protect all the pins and bushings from the tremendous torque of the long boom and dipper. One important thing about hoe's is to not have much stress on the hoe when swinging. i.e. do not try to push or pull objects with the swing action. Oh and the poor mans 4 pt hitch, good quick "thinking outside the hoe", whatever it takes, right? Larry
|
|
GuglioLS
Administrator
Jinma354 LE
Posts: 1,276
|
Post by GuglioLS on Apr 7, 2008 21:58:21 GMT -5
I believe this is the cushion valve Rob used on his winch to limit the pressure: From Surplus Center: Item 9-4019-A (61.95) Yours might be OK? New PRINCE DRV. Cushion valve or double relief valve. Use to stop or minimize surge, shock and overload in hydraulic circuits. Install between control valve and motor or cylinder. Bypasses to opposite side to prevent cavitation.
30 GPM max. Adj. reliefs from 1500-3000 PSI 1/2" NPT Shpg. 8 lbs.Perhaps consider installing a Pressure Gauge in your circuit to monitor and set pressures? Larry
|
|
|
Post by bradblazer on Apr 7, 2008 22:10:57 GMT -5
Thanks guys. Watching the video myself I am sitting pretty high! It looks like I really do need a good sub frame.
That was with the engine at 1000 RPM.
Yeah, I really need to fix the swing. It seemed to build up when I dug it in the ground and swung about a foot when it rose free. It was definitely worth hooking it up for that little evaluation so I know what all I need to fix up before digging.
Fly - I just checked YouTube and their site is being repaired! At least it looks like Surplus Center is back on.
Brad
p.s. Larry - thanks for that valve info!
|
|
|
Post by tuffytractor on Apr 7, 2008 23:28:39 GMT -5
Wow Brad!
Looks like a digging machine. Good find! I'm sure you will get the hydraulics figured out and put that thing to work. Certainly with that much beef the the sub-frame is the only way to go. With the 9.5' depth you'll be able to dig ultra deep. I'll watch for your progress...
|
|
3RRL
Administrator
Huge Kama
Posts: 2,027
|
Post by 3RRL on Apr 7, 2008 23:38:05 GMT -5
Yeah, great videos Brad. I noticed in the last video the Kama was just idling and easily picked up that hoe.
|
|
|
Post by bradblazer on Apr 8, 2008 8:14:58 GMT -5
Yeah, great videos Brad. I noticed in the last video the Kama was just idling and easily picked up that hoe. Yeah, no problem, but before I aired up the tires it was like being on the down elevator. I put in 30psi - what do you run your's at? Mine do not seem to list any max pressure on the sidewalls. I think I'll widen the stance too for more stability with that tall load. I imagine that the traction in dry dirt will be incredible with the hoe attached. A couple of scoops around the roots and pull the tree down!
|
|
Jake
CTW Member
I love the smell of diesel in the morning. Smells like.. Victory!
Posts: 58
|
Post by Jake on Apr 8, 2008 8:31:16 GMT -5
Wow ! That thing sure has the reach ! ..and the seat swinging with the boom... that's too cool! Really nice find, Brad. Congrats and keep us posted on your progress with it.
|
|
3RRL
Administrator
Huge Kama
Posts: 2,027
|
Post by 3RRL on Apr 8, 2008 10:47:02 GMT -5
I put in 30psi - what do you run your's at? Mine do not seem to list any max pressure on the sidewalls.
I think I'll widen the stance too for more stability with that tall load. Normally I run the rears at 20psi. Air down to 15 for sand and over rocky terrain. Air up to 25 for heavy load when my hoe is on. I always run the fronts at 30 min.
I think widening the stance is a good thing for any tractor unless it's a plowing tractor where your tires need to track the plow furrow.
|
|