Hi All, I have a case 530 with a 31 Backhoe and yesterday when I attempted to lift the boom none of the backhoe controls worked. It was like the machine wasn't running. I then tested the loader and it lifted fine. I then tried the rear controls and as I tried the bucket the high pressure hose to the valve body blew out. I need to buy a new hose to see if it now will work. Could this happen if a relief valve opened and stuck? Any ideas would be much appreciated, Thanks
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Case 530 backhoe controls dont function
- Thread starter Athlon
- Start date
- Views: 3942
-
- Tags
- ji case 530
aczlan
Good Morning
- Joined
- Mar 7, 2008
- Messages
- 16,985
- Tractor
- Kubota L3830GST, B7500HST, BX2660. Formerly: Case 480F LL, David Brown 880UE
Is the backhoe removable? If so, my bet would be on the quick connect in the return line to the tractor being partially disconnected and blocking all flow.
Aaron Z
Aaron Z
DJ54
Elite Member
- Joined
- Jan 20, 2009
- Messages
- 4,520
- Location
- Carroll, Ohio
- Tractor
- IH Farmall 656 gas/ IH 240 Utility/ 2, Super C Farmalls/ 2, Farmall A's/ Farmall BN/McCormick-Deering OS-6/McCormick-Deering O-4/ '36 Farmall F-12/ 480 Case hoe. '65 Ford 2000 3 cyl., 4 spd. w/3 spd Aux. Trans
If it is an older hose, it's a good possibility, it had just seen it's better days. If done at an idle, when you first tried the backhoe, it may have already been leaking, if in a spot where you couldn't see it. The second time you tried it, if it was at a little higher RPM's, it may have split the hose more, relieving that pressure,when put under a load.
On both the old 310B, and my newer 480C, if at an idle, and I happen to pressurize the loader, or backhoe, to the limit of the cylinder travel, making it open the relief valve, it will kill the engine. So, if you did this at an idle, I'd think it would kill the engine IF the relief valve is/was stuck.
Replace the hose, and feather the control at an an idle, and see what happens. With a new hose, if the relief valve is stuck, and deadheads the pump, it should kill the engine. If that is the case, then you can trouble shoot further.
Here is a link I hope you find useful. I found it 8-9 years ago, when working on my old 310B. It is for a 530CK, but loader, and backhoe units are used on both tractors. Plus, has manuals for the tractor unit itself. You'll need to use the rotate arrow at top right, to make it a lot easier to read. http://home.microtech.com/mikef/530CK/manuals.php
On both the old 310B, and my newer 480C, if at an idle, and I happen to pressurize the loader, or backhoe, to the limit of the cylinder travel, making it open the relief valve, it will kill the engine. So, if you did this at an idle, I'd think it would kill the engine IF the relief valve is/was stuck.
Replace the hose, and feather the control at an an idle, and see what happens. With a new hose, if the relief valve is stuck, and deadheads the pump, it should kill the engine. If that is the case, then you can trouble shoot further.
Here is a link I hope you find useful. I found it 8-9 years ago, when working on my old 310B. It is for a 530CK, but loader, and backhoe units are used on both tractors. Plus, has manuals for the tractor unit itself. You'll need to use the rotate arrow at top right, to make it a lot easier to read. http://home.microtech.com/mikef/530CK/manuals.php
DJ54 I agree on the hose letting go, it was just at the wrong time which is anytime! I was using the loader scraping off some loam to prepare for a concrete slab, the boom and bucket had creeped down causing the bucket to drag against the ground when backing up. I then reached around to curl the bucket back up, thats when I noticed none of the controls worked, I then tried the loader and it lifted. Tried the bucket again and the hose blew. I was thinking the back pressure from the bucket pushing against the ground in reverse may have closed a bypass valve at the loader valve body to close and stay closed. This in turn stopped pressure to the rear controls valve body, That would explain nothing working. The pressure returned and the sudden surge was too much for the weakened hose and it blew out. This is the first time I ever saw the backhoe controls not work while machine running. Plenty of fluid too. The Backhoe valve body high pressure line comes out of the loader valve body which makes me think something in there closed the circuit to just the front bucket. Its raining now, as soon as I can I will put the new hose on and see if it is working now. I will update once done.
Just replaced the hose and fired machine up, all functions are normal now. There must have been a valve that tripped and left the rear valve body un-pressurized. Once I actuated one of the loader controls it came free allowing the backhoe to regain use. Have owned this machine since 1964 when it was two years old and this is the first time this happened. Never thought I would see something new after all these years, thanks for your input and the link to the service manuals By the way the Loader and backhoe are both model "42" not a "31".
DJ54
Elite Member
- Joined
- Jan 20, 2009
- Messages
- 4,520
- Location
- Carroll, Ohio
- Tractor
- IH Farmall 656 gas/ IH 240 Utility/ 2, Super C Farmalls/ 2, Farmall A's/ Farmall BN/McCormick-Deering OS-6/McCormick-Deering O-4/ '36 Farmall F-12/ 480 Case hoe. '65 Ford 2000 3 cyl., 4 spd. w/3 spd Aux. Trans
Good to hear you got it up & going..!!
Cat_Driver
Veteran Member
- Joined
- Jan 15, 2008
- Messages
- 2,359
- Location
- Coachella Ca.
- Tractor
- 2016 Kubota 4060, 2017 Tackeuchi excavator TB260
Hi All, I have a case 530 with a 31 Backhoe and yesterday when I attempted to lift the boom none of the backhoe controls worked. It was like the machine wasn't running. I then tested the loader and it lifted fine. I then tried the rear controls and as I tried the bucket the high pressure hose to the valve body blew out. I need to buy a new hose to see if it now will work. Could this happen if a relief valve opened and stuck? Any ideas would be much appreciated, Thanks
Check your wiring behind the dash to see if pac-rats have chewed wired to he controls selenoids.
BAP
Gold Member
- Joined
- Aug 23, 2013
- Messages
- 360
- Location
- Walpole, NH
- Tractor
- Kubota B2920 Loader, BH65, 60"MMM, B2782B snowblower, Forks , Woods 48" bush hog
Check your wiring behind the dash to see if pac-rats have chewed wired to he controls selenoids.
Case 530 backhoes were built a long time before solenoid controls were invented. They used Real Men controls not video game controls used nowadays.