Hydraulic fluid was bypassing the wiper seals at the top (cap) of the hydraulic cylinder. The tilt/trim worked, but when raised, the leak would allow the engine to lower slowly. I replaced the wiper seals and no longer have a leak. Now the power tilt/trim unit will not raise the engine. I have manually raised the engine and filled the reservoir to the fill-hole. Pump motor runs strong in either direction. No more leaks that I can find. I have to be doing something wrong. I have the service manual and understand the procedures. I have to be missing something. Help if you can.
