Case 1845 b

[pinto Bill]

I have a 1845 b skid steer and it will not hold the curl the lift arms work perfectly and will hold no problem. Could it be the control valve is bad any help will be appreciated thank you.

 

[brdgbldr]

I have a 1845 b skid steer and it will not hold the curl the lift arms work perfectly and will hold no problem. Could it be the control valve is bad any help will be appreciated thank you.

Could be the tilt cylinders need to be resealed. Could also be the tilt control valve or pressure relief valve.

 

[pinto Bill]

Thank you I will try that the right till cylinder is leaking hydraulic fluid

 

[Gearclash]

How fast is the bucket sagging? Some sag is inevitable, especially on the first part of the cylinder travel where the bucket has great leverage on the cylinder. If the cylinders are sagging rapidly, force the arms all the way down, then take the bucket and lift the front wheels of the machine off the ground at least half a foot. See if the bucket cylinders sag in retraction almost as bad they as they sag in extension. If the cylinders sag significantly in retraction, there is leakage in the control valve/load check valve. If the cylinder sag badly in extension but not in retraction, there is cylinder piston seal blown.

 

[pinto Bill]

Thank you so very much. I will try this next week and pray it's not the control valve.it's so hard to find parts for this machine. And I really would like to save it.

 

[pinto Bill]

Thank you so very much. I will try this next week and pray it's not the control valve.it's so hard to find parts for this machine. And I really would like to save it.

Well I had time off today and I tried it and raised the skit steer up with the bucket and yes! It will go down at the same speed as when you curl the bucket up. Now I will have to find out where is the check valve location. But if it's not the check valve then it's the control valve. Thank you again Mr. Gearclash

 

[Gearclash]

A dual cylinder machine is easy enough to test for internal cylinder bypass. All you need is a pair of JIC (or face-seal on newer machines) caps & plugs. After first positioning the machine so as to lose a minimum amount of oil, disconnects the lines on one cylinder. Plug off both lines and cap both adapter fittings on the cylinder. Then start the machine and try to cycle the bucket with just the one cylinder. If the seals are good in the disconnected cylinder the active cylinder will not be able to force it to bypass. If it does move, then that cylinder is bypassing and needs to be re-sealed. And the other cylinder might be bypassing also, so you should test them both.

Don't, under any circumstances, try this test without a really stout attachment firmly coupled to the machine or you with twist the $h!t out of the coupler. Even then its not a great test as you will not make the bad cylinder retract, even if the piston seals were completely gone.

 

[Gearclash]

You are correct, I should have noted that the capped off cylinder cannot be forced to retract unless the oil in the cylinder can leak out of the head seal.

 

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Thank you I will try that the right till cylinder is leaking hydraulic fluid

How many hours on it? Since you have a leak already it will not hurt to repack the cylinders Both sides. Chances are one was gone and the other is so weak it gave up the Ghost.