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Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 26059
Experience:  Technican turned service manager with multiple lines of equipment and rental units.
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Lif arms will not hold in position

Customer Question

lif arms will not hold in position
Submitted: 11 months ago.
Category: Construction and Road Equipment
Expert:  Curtis B. replied 11 months ago.

Make and model?

Expert:  Curtis B. replied 11 months ago.

If loader will not hold load, usually it is a cylinder that has internal leakage.

Customer: replied 11 months ago.
i have tried plugging both cylinder and lines one side at a time. did not change anything it is like lift arms are in float, but i dont think this model has a float position.
Expert:  Curtis B. replied 11 months ago.

Plugging cylinder lines? If cylinder has internal leakage it will still leak down. To check cylinders, use down pressure, and figure ut which hose on the cylinder is pressure, then remove the opposite hose on the cylinder, Then pressure up the cylinder, if oil comes from the cylinder, the cylinder has leakage, if oil comes from the removed hose, the opposite cylinder is the leaker.

Customer: replied 11 months ago.
unless both cylinders went at the same time i accomplished the same thing. if we cant move on and agree the cylinders are not the problem. send another technician or refund my money.
Expert:  Curtis B. replied 11 months ago.

I'm still waiting on a model and make!

Expert:  Curtis B. replied 11 months ago.

Cylinders are teed together, so one affects the other.

Customer: replied 11 months ago.
Cat 226b. thats why i plugged the lines and operated one cylinder at a time. one cylinder would hold the lift arm if it wasnt leaking by.
Expert:  Curtis B. replied 11 months ago.

The control valve spool has to hold the oil in the cylinders > If cylinders do not leak off, then the problem has to be at the control valve. Just cylinders are much more common failure.

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