How to tell if an attachment is pressure bound?

How to tell if an attachment is pressure bound?

First its important to understand that the attachment can also be pressure bound. the way to check if the machine or attachment is pressure bound is by pressing the center of the coupling.

Why is my hydraulic valve not unloading properly?

Consider the following when troubleshooting these valves because a valve fails to completely unload a pump: • Valve setting is too high. • Pump does not build up to the unloading valve pressure. • Valve spool binds in the body.

Can a hydraulic lock cause a cylinder to drift?

At this point, a hydraulic lock is effected and no further drift can occur, unless fluid is allowed to escape from the cylinder or cylinder circuit. Figure 2. Load hanging on double-acting cylinder

What to do when your hydraulic quick connect won’t connect?

Try and pull forward on the outside of the coupling just before it’s all the way in. Take the 2 hoses off your blower and connect them together and watch how the outside of the male coupling moves and locks. Hope that makes sense and helps Sometimes we have had to loosen the quick coupler from the hose…

What can you do with a hydraulic thumb?

A Hydraulic Thumb makes it easier to pick, hold and move awkward material such as rocks, concrete, branches, and debris that does not fit into the bucket. AMI Attachments offer two types of Hydraulic thumbs, the stick pivot and Pro-Link.

Can a hydraulic thumb be installed on an excavator?

The easiest and fastest way to get more capability from your excavator is to install a Hydraulic Thumb. With an AMI Attachments Hydraulic Thumb, your excavator goes from digging to complete material handling.

How does the thumb work on a backhoe?

The thumb to be Position 90 degrees to the flat part of the stick as shown. Bring the bucket and thumb together as shown in figure D2. The thumb must contact the bucket cutting edge or bucket teeth. The bucket must contact the thumb only in this area.

What’s the maximum pressure for a hydraulic backhoe thumb?

Move the thumb to the minimum and maximum cylinder stroke, check that the cylinder is free and that it has no contact that would damage the cylinder. Finish welding the brackets to the boom using 70-18 electrode. The thumb is now ready for use. ***Warning*** max pressure must not exceed 2,500psi.