Save This Page ] [ Follow Ups ] [ Post Followup ] [ Kubota Tractor Discussion Forum ] [ FAQ ] Save This Page ] [ Follow Ups ] [ Post Followup ] [ Kubota Tractor Discussion Forum ] [ FAQ ]
| | SSB Farm Tractor Parts, Manuals & Antique Tractors | | Aftermarket Tractor Parts | | Tractor Service & Repair Shop Manuals | |
| | Tractor Implements | | Tractor Seats | | Trailer Parts | | Tractor Loaders | | PTO Generators | | Rear View Backup Camera | |
| | Pedal Toy Tractors | | Tractor Books | | Small Engines | | Antique Farm Tractors Blog | | Antique Tractors History | | Rustic Home | |
Posted same message under different title - will try explain better.
Have a 2005 Kubota L3400 with BH-75 Backhoe (BH). After about 100 hours, I found that I had burst a hydraulic hose that led from the main feed at the base of the BH to the lower boom - cylinder located on the interior of the lower boom.
I replaced it (about $75 from dealer to make). Dealer said original factory lines inadequate and gave me slighter more PSI line with thicker jacket.
Soon after, a few different lines broke. Replaced with "upgraded lines".
Now, I have a repeated breakage in the same interior cylinder line.
With this however, I have two problems.
First, why are the lines continuing to break?
Second, after the lines break, I find the end loader doesn't function correctly either.
Ie when I termintade the quick disconnect lines that feed the BH (near the PTO on rear of tractor), the end loader "acts up". After each time - and trying to operate with BH disconnected - the end loader WONT raise when stick pulled all the way back. I find I have to pull it back only half-way - like I was trying to lift something slowly. Furthermore, I can apply NO downward force to end loader. Only way to lower is by placing in float position. The bucket of the loader however, seems to work and I can curl up and down. Overall, the hydraulic power seems gone.
I thought - at first - it was air in the line but the service people told be it was "self-bleeding" and that running the equipment for about ten minutes would remedy this situation. It didnt!
Now, seeing as I have broken about four lines to the BH all together, I can tell you that AFTER I repair the BH line and reconnect it to the entire system, the end loader seems to come back to normal BUT I am almost certain this is a symptom of a LARGER problem.
Why doesnt the self bleeding valves fix the problem with the BH disconnected? Why do my BH lines keep breaking? As I said, It seems to be the lower, interior cylinder on the main (lower) boom the most.
The fluid level seems as required. Middle of window when engine off. Raises to top when started.
Using Kubota fluid.
I DID notive on two occassion that - as a trial and error thing - when I tried disconnecting the quick disconnects on the end loader itself that a hose would NOT let be reconnect it do to pressure in the line. In other words, that small valve/ball in the quick disconnect had so much pressure that it would not allow me to reconnect the hoses. I had to manually depress that tiny valve/ball with a smooth metal surface to release pressure before I could reconnect. Again, this would seemingly be an issue the "self-bleeder" should have remedied, right?
Are these symptoms of a much larger, systemic problem or is it truely only related to the BH hose issue?
Has anyone else had this problem? Why do the BH hoses keep bursting?
yes, I work the machine everyday. I use it alot. But I dont think I over-extend it;'s abilities. I am careful not to let the BH pull against "dead weight" (an object that wont budge from the ground when pulled) and dont leave it "straining" against things that wont move.
When digging stumps - which I do alot - I make SURE to dig a very LARGE diameter hole around the stump and make it much deeper than I think it needs be before I attempt to even move the stump - much less pull it out of the hole. Sometimes, I will dig down at least six feet - all the way around - before I even try to rock the stump. All to make sure I dont stress the BH hydraulics. When I remove the stump from the hole. I even grade a "ramp" to make less resistance and hook a chain to the tractor itself (not the BH) to pull it out.
Any help at all will be GREATLY appreaciated. I cant keep buying $75 hoses! Also, does anyone know of any other dealer/supplier that can make these hoses at a less expensive price? tractor Supply is simply too far away for us. Does any Car Parts stores do this as well?
Thank you for your time and assistance.
Bryan
Mansfield Center, CT