Tech Tip Tuesday: How to repair the seals on your stabilization legs

Tech Tip Tuesday: How to repair the seals on your stabilization legs

Cleanliness is the most important operational property of hydraulic oil, because contamination can quickly destroy system components if it gets too severe. However, in the harsh working environments of the aggregate, mining and construction markets, some level of contamination is possible the longer equipment is out in the field. In the event of leg seal damage due to contamination, there is an easy process to repair the seals so you don’t need to replace stabilization legs.

All Power-Packer stabilization legs have seal repair kits, and they’re broken down by bore diameter:

Bore diameter

Seal kit number

Service manual page

3 inches 200080 7
3.5 inches 101086 13
4 inches 100422 13
5 inches 300508 23
6 inches 300086 27

Each bore size will have specific instructions for repairing the leg seals. In general, you will need to follow these steps:

  1. Remove the legs from the system and bleed any residual pressure by cracking the check valves.
  2. Remove the manifold and snap rings holding the cylinder, rod and pistons inside the barrel.
  3. Remove the cylinder, rod and pistons from the barrel.
  4. Replace all soft parts and lubricate with hydraulic oil or o-ring grease.
  5. Assemble the legs in reverse order.
  6. Reattach the legs.
  7. Follow the fill and bleed procedure.


Download the printable manual guide for Repairing Seals on Stabilization Legs and follow the detailed steps and guidance to repair the seals on your stabilization legs. You may also refer to more basic repair instructions in the Downloads section of our website.

Please contact a local hydraulic repair center if you do not have the proper equipment on-site to repair your stabilization legs. Questions about the maintenance process or need help finding a local repair center? Contact our Customer Service team at for more information.

*Note that this process applies only to Power-Packer products manufactured in North America.