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I have a 1999 Case 1840 skid steer I'm having problems with

Customer Question
how much does it cost...
I have a 1999 Case 1840 skid steer I'm having problems with how much does it cost to get some info?
Submitted: 1 year ago.Category: Construction and Road Equipment
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Answered in 1 minute by:
7/28/2016
Mechanic: Curtis B., Technician replied 1 year ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 29,455
Experience: Technican turned service manager with multiple lines of equipment and rental units.
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I can try , what kind of problem do you have?

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Customer reply replied 1 year ago
Right side drive has gotten weak
Customer reply replied 1 year ago
Left side seems to be working just fine and rest of machine
Mechanic: Curtis B., Technician replied 1 year ago

Right side is loosing pressure. Problem is determining if it is the pump or the drive motor. It is not anything to do with oil or filter, as that would affect both sides. The only way to know which is bad, is to take both of the parts to hydraulic shop and have them test or rebuild both pump and motor on the right side.

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Customer reply replied 1 year ago
Drive motor is brand new and tandem pump does not have many hours on it. We replaced it not to long ago. I checked charge pressure and almost 400psi. I havnt been able to find anything on what else to check. I checked the pressures on the servo and the difference between left and right is that the right has 125psi at idle and left has 0 until you move lever then it goes up to 125psi then back to 0psi when it starts to move
Customer reply replied 1 year ago
I read something about checking orfice but didn't see anything in the hole
Mechanic: Curtis B., Technician replied 1 year ago

The servo is the control of the output of the drive pump . Unless it is not keeping pressure on the swash plate.?? Right side never drops back to zero , like the left?

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Customer reply replied 1 year ago
no sir.
Mechanic: Curtis B., Technician replied 1 year ago

I don't know about any orifice.

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Mechanic: Curtis B., Technician replied 1 year ago

None listed in the parts manual.

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Customer reply replied 1 year ago
It shows an orifice underneath an allen 1/8 plug right next to the manual displacement control. one guy posted a diagram that showed to check charge pressure and if it was good to make sure orifice is clean. On the picture it shows a picture of something small under plug but I was never able to find anything underneath unless it has to be pulled out some how.
Customer reply replied 1 year ago
what do you suggest we do. I think it is something simple just need to figure it out
Customer reply replied 1 year ago
Actually it has more power in reverse than in forward
Mechanic: Curtis B., Technician replied 1 year ago

My suggestion is to take it to a good hydraulic shop that can test it! Not many can! I was In Texas and we had Texas Hydraulics , which had test stand and could check any hydrostatic pump or motor.

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Customer reply replied 1 year ago
not what I wanted to hear. Do you think that spool could have that effect?
Mechanic: Curtis B., Technician replied 1 year ago

If the servo is not keeping the swash plate at maximum stroke, it could affect the output of the drive pump. Without replacing or swapping the spool, I don't see any way of knowing.

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Customer reply replied 1 year ago
would I need to swap sleeve also or just spool?
Mechanic: Curtis B., Technician replied 1 year ago

Just spool.

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Customer reply replied 1 year ago
I couldn't figure out how to get sleeve out I was scared of damaging it
Mechanic: Curtis B., Technician replied 1 year ago

Sleeve is just that, a sleeve and does not need to be removed.

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Customer reply replied 1 year ago
I pulled out spool to right side and it had some scratches. then put it back in then removed it again after turning it a bit and it came out more scratched up
Mechanic: Curtis B., Technician replied 1 year ago

!! Not good, what is making the scratches? When pressures are in the 5000 psi range, dirt or debris wipes out pumps and motors in short order!

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Customer reply replied 1 year ago
What ever is down in that sleeve is causing it. you can feel it. it feels kind of rough. should you be able to turn spool all the way around with no problem? I'm going to say its at top of sleeve cause it leaves the scratch all the from top to bottom of spool right under oring
Customer reply replied 1 year ago
I didn't know if spool had to be set in at a certain direction
Mechanic: Curtis B., Technician replied 1 year ago

Spool should be free to rotate. You mean depth ?

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Customer reply replied 1 year ago
can we continue this tomorrow I need to get some rest gotta get up real early?
Mechanic: Curtis B., Technician replied 1 year ago

Sure, past my bedtime too!

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Curtis B.
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 29,455
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Experience: Technican turned service manager with multiple lines of equipment and rental units.

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