The Linde I'm working on is an Electric lift truck with serial no. 516047007616. The truck drives forward and reverse with no problems. But no hydraulics on steering and the lift valve pack. Our fleet is mostly Yale. This is the only Linde we have. The service manual doesn't really has any troubleshooting. Schematics is in German. There are no codes displayed. One of the mechanics replace a hose to the steering. I'm wondering if he check the fluid level afterwords. Will check that out the next work day. Any help would be appreciated.