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Extendahoe problems

F

Frederick T Haas

Member
Joined
Nov 24, 2020
Messages
17
Location
Seneca Kansas
I have a Case 590 Super m with pilot controls, I think it is a 2015, the problem is sometimes when I extend the hoe it will not return, I have to shut the hyd switch on and off several times to get it to come back, and it seems to be getting worse, everything else works fine. Any help I could get would be appreciated.
 
Vetech63

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,402
Location
Oklahoma
Some questions.......
1. The hydraulic switch should cut out all hydraulic functions so the switch cant be the issue. Does it do this at any length of boom when retracting or only at the end (fully extended)?
2. Is the engine under a hydraulic load when this happens? When you extend fully and retract fully the engine should sound like the same rpms when the cylinder is bottomed out.
3. Have you noticed if when extended, does the extension look like its not inline with the main boom? Wear pad failure?
Several things could cause this kind of problem. We need to narrow the scope of what to look for.
 
B

Batu

New Member
Joined
Oct 25, 2020
Messages
4
Location
usa
How long has this problem been going on? If you continue to use it like this for a long time, it may cause bigger problems.
 
F

Frederick T Haas

Member
Joined
Nov 24, 2020
Messages
17
Location
Seneca Kansas
I figured the hyd switch wasn't the problem. It doesn't matter how far you extend it, it won't come back, everything seems to be in line, and when extended if you push the button to extend you can hear the engine rpm change a bit, but not when you are trying to get it back. Once it comes back it seems to work ok after that. We don't use it continuasly very often, we are a trash service and we use it to pack the trash into a trailer, and when unloading a truck we use the extendahoe to push the trash out of the way. We do have a guy who packs the trash with the hoe out, I assume that can't be good on it. The problem started about a month ago, and as I said it seems to be getting worse, I would hate for it to get stuck all the way out.
 
F

Frederick T Haas

Member
Joined
Nov 24, 2020
Messages
17
Location
Seneca Kansas
Vetech63 said:
Some questions.......
1. The hydraulic switch should cut out all hydraulic functions so the switch cant be the issue. Does it do this at any length of boom when retracting or only at the end (fully extended)?
2. Is the engine under a hydraulic load when this happens? When you extend fully and retract fully the engine should sound like the same rpms when the cylinder is bottomed out.
3. Have you noticed if when extended, does the extension look like its not inline with the main boom? Wear pad failure?
Several things could cause this kind of problem. We need to narrow the scope of what to look for.
Click to expand...
I may have posted my reply in the wrong place, new to this, let me know if you don't see it, thanks.
 
Vetech63

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,402
Location
Oklahoma
It just almost sounds like the piston nut is loose on the cylinder rod. Could possibly be the circuit relief for the retract side on the control section. If I were a betting man I’m steering toward a cylinder issue.
 
K

kith

Well-Known Member
Joined
Oct 5, 2009
Messages
96
Location
iowa
Have you tried the stabilizers when this happens? The controller for these functions is above the rear axle on the left side. It has a red light on it that will flash a code if it malfunctions. Just reread your post ,is it the extendahoe that quits or all the hydraulics?
 
gggraham

gggraham

Senior Member
Joined
Feb 13, 2009
Messages
588
Location
London Ontario Canada
Occupation
Licensed Heavy Duty Equipment Mechanic
Sounds like a problem with the switches in the handle (quite common) Complete pilot Guide attached. Replace both switches not just one.
 

Attachments

  • Pilot Control System.pdf
    1.7 MB · Views: 10
W

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
12,471
Location
Canada
If the piston nut was loose I think if the extend was in even a little it would move a little if you tried pulling on something with the bucket.
 
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