If you have a hydraulic cylinder that has started to leak and you can tell that the overall performance from the cylinder has dropped, you are going to need to determine if you want to repair the damaged hydraulic cylinder or replace it. Here are a few things to keep in mind when determining what step to take next.
#1 Leaking Cylinder
The first thing you need to take into consideration is if the cylinder is leaking. If you have notices that hydraulic fluid is building up under the glands or that the piston rods are getting fluid on them when they should not be, then your cylinder is defiantly leaking.
In order to know how best to proceed, you need to figure out why the cylinder is leaking. If you just replace the gland where the leak is originating from, you may encounter the same issue again soon. Instead, try to figure out why the gland is not wearing correctly. Often times, the gland is wearing incorrectly because the mountings that keep it in place are worn out or misaligned. Fixing the mountings and the glands are then the best way to fix the hydraulic cylinder.
Generally, a repair will fix a leaking cylinder if you are able to determine why the cylinder is leaking in the first place.
#2 Damaged Piston Rod
If the piston rod is damaged, bent or scored, you need to carefully examine the piston rod. If the damage is not that serious or bent, you may be able to repair it on your own. However, if the pitting or scoring is deep on the piston rod, it may make more sense to just replace it. Replacing a damaged piston rod is often more cost-effective and time-effective than fixing it.
Once again, make sure to determine why the piston rod needed to be replaced. Was the piston rod just old or does the rod strength need to be adjusted for the load that you are currently running on it.
#3 Damaged Mountings
Use the appropriate tool to tighten up the mountings if they are not tight; you shouldn't have to replace them.
If the mountings are damaged, you are going to want to replace them. When you replace them make sure that you purchase the correct grade of mounting bolts based on the torque of the load that you are using in your hydraulic cylinder. When you purchase mounting for your hydraulic cylinder, the company you purchase them from should have a cylinder catalogue that allows you to see what grade of mountings are appropriate for your particular hydraulic cylinder and overall load.
For more information, talk to a professional like Hydraulic Hose & Cylinder Inc.