Hydraulic Service

Hydraulic Service  

In field hydraulic service> is available from John Henry Foster Company. Our factory-trained technicians will keep your hydraulic system operating properly. Emergency service is available after normal working hours, weekends, and holidays. We will be there when you need us.

We offer service for all brands of hydraulic components.


Oil Analysis – If you want to monitor the condition of your hydraulic fluid, we offer a very comprehensive oil analysis program. We will schedule periodic samples to insure your fluid does not become contaminated and cause damage to the system components.  

Preventive Maintenance Agreements – You don’t have to concern yourself with the condition of your hydraulic system. Free up your maintenance crew to work on other critical areas of your plant. We will schedule visits to accommodate your schedule. Together, the Preventive Maintenance program along with an oil analysis program is a great strategy to round out your maintenance needs.  

FREE initial equipment review – Contact JHF today to schedule your first appointment and to discuss rates for service calls or to set up a Preventive Maintenance program.

In Shop Repairs – Our full service shop can re-work your hydraulic components to a like-new condition. We know pump repair, cylinder repair, and valve repair. John Henry Foster is also a certified repair center for Gast Mfg. Compressors and vacuum pumps.

Hydraulic Repairs – If you need to schedule a return, contact to obtain a Return Goods Authorization (RGA).

Custom Power Units – John Henry Foster Company has supplied the midwest with fluid power for more than 50 years and our ability to design and build custom hydraulic power units is an important part of our success. Our people work closely with our customers to size and build the most efficient hydraulic power package possible.