Progress, Questions, and Comments for Loader Arms and Interior Chair on the DOG 434E Backhoe Loader posted here:
So I think that I finally figured out what the RED Beam-like thingy is on the side of the Left Hydraulic for the loader arm.
I believe it is a safety brace for the arms to keep them elevated (RED items are typically used for safety LOTO, also known as Lock-Out-Tag-Out). It is typically stowed and not in use. The only thing I don't get is how it braces the Hydraulics in this particular assembly haha. They would have to extend and then the brace locks the hydraulics in place so you can work on the loader arm assembly safely.
Safety brace on similar engine.
Any thoughts for the Pound?
I have seen similar thing on a hydraulic lift where I used to work.
I would say your right as a safety feature and I'm pretty sure in the position as it is, in the image the hydraulic piston cant retract. For maintenance on the hydraulics, top up fluid, replace hoses etc. As for this occasion probably just posing for the photo I would suggest.
I think the safety pin I have circled is in that position to stop it lifting from this lock position (as in lock the piston).
When in normal use the pin would be removed and placed in hole 1 and through hole 2 which lifts it above the piston cylinder whiche frees the movement of the piston.
I hope I have explained it ok.
Our Dog looks a bit different.
On ours the whole thing is probably detached and placed over the piston. because it attached to the bucket piston not the arm. where the pin is in the top circle there is what looks like a bracket and another where the lower circle is, cant really see but there is probably something at the top as well.
Done some digging and found this in the treasure trove:
The top bracket has the pin trough the hole as before, and the bottom must be hooked on somehow.
Check this out https://youtu.be/4p9cgqS_UjY?t=170
The brackets may look something like this but different, this is the closest I could find:
Take a look at this at around 2:00 minutes a good view of how the front bracket looks and the safety brace slides on to it.
AAdrian that is great! I didn't know you could share a video time stamp. It was super helpful. Yeah a close up of the image from that video looks a lot better. I was trying to see more close-ups but after an hour of looking I was willing to ask if someone could find better haha.
I agree now. This totally removes. I found this video (crappy quality but it totally describes the function on a different model Backhoe Loader but it is the same design of brace: Safety Brace Installation
Okay next question. What the heck does this thing do? I see it on quite a few of the backhoe loaders but I haven't been able to pull up much other info on it. It is on the opposite upper hydraulic.
Whatda Heck Isit??? (as my boy would say)
From what I can find it's a "Kickout and Positioner"
From what I read it's a magnetic switch thing, something to do with electronic control of the positioning of the bucket.
Oh, that's right! This backhoe loader I think has smart positioning system! There are some options on the console to help it find "home" for the operator so he doesn't have to manually get back to a normal position on his own. This is probably that sensor. That is probably just a protective plate and guide for the electric cable that goes to the sensor!
Nicely done @adrian2301
Okay this is an issue I am not sure how to resolve. Notice that the loader arms can fully extend and retract in this video: (timestamp 0:44 through 1:12)
https://youtu.be/xwDlTIblhyc?t=44
I am having trouble getting my angle bracket to replicate this.....
Angle Bracket in Red.
And here's another view with the loader arms from a different side:
View from above
And a view with Loader Arms Raised:
Loader Arms Raised
Not sure how to make that part not chop up......
Any ideas @theluthier or from the Pound?
I don't envy you blanchsb , these loader arms are more complex than any of us could of imagined.
I had a look, here's what I think.
1a. At first glance I thought there was a spacer here but Looking closer at this angle I thought I could see the hole is misaligned and a zoomed view at 1b. shows these parts of the arm are either side of the one larger piece on the bucket.
2. Not sure why I highlighted this now. I think the part shown in red on your demo's is not as bent as you have it. I'm sure from another view this part is not centred between the top part but set more to one side. I cant find the image I saw it on.
3. This hole bracket thing is protruding into the piston. This is the only image I have seen it on, not sure what I does or it's relevance, maybe where the pin goes when the safety brace is in use. Not sure if you got it set on top but looks like it should be to the side more but not really sure.
Found it:
This image shows the RED part to the side with a spacer the other.
I know it is not showing the whole part but the process of thought says to me its the next part down the arm from the piston.
So looking now with that over slightly and attached to just one part of the bucket should solve that problem.
As I look at this image more, that position sensor thing looks like its attached with basic square metal tube. Seems out of place on this Dog.
Found this Image of a Top view, not sure if it was you, I'll post it the pound if not.
Is it my eyes or do the arms get wider towards the bucket?
The site where I found it says 434E but the obvious difference is the wheel size at the front.
@adrian2301 that is a different loader arm, that may be the older model 434E or not even our Dog. I can rotate my whole assembly just a hairif the team decides we need to do that.
Hmm this is a head-scratcher. I tend to agree with Adrian that the bent bracked must not be as crooked as it currently is. In fact the pictures and video make me think it might be straight with slightly curved edge contour:
However I'm having trouble make sense of the surrounding pieces. Is it possible that the upper and lower arms (yellow) aren't directly on top of each other but slightly off-center to make room for the bent bracket to be straight?
That top piece is directly over the loader arm I am pretty darn sure. They may be separated a little more perhaps and the angle bracket is definitely not that curve and actually sits over to the side more (see Adrian's posts below).
The upper hydraulic does sit dead center above the main loader arm and should connect to the top pieces roughly dead center as well.
I agree @spikeyxxx. Looked like magic and has me scratching my head haha.
