The slide is indeed HWH hydraulic model AP36467 leveleze. The rear slide operates fine. So I'm confident that there is fluid and the pump is operating. The coach and the slideout are in a position that makes it difficult to check the fluid level. I can see the tank and manifold and the solenoids, of which there is six. When I operate the slideout switch on the dash, I can here what sounds like an electric motor sound. When I initially went to pull it in, it was working fine and then 1/2 way in the slideout stopped , but the motor sound kept going. I only here the motor sound when I operate the switch on the dash, runs when I push the button, stops when I release the button. I thought it was caught and racked, so I measured both sides and both ends of the slide are 16 1/2 inches from wall to back of slideout.