Does anyone the details around what a hydraulic tilt motor will do if it hits something large? Is thee some kind of pressure relief valve that allows it to tilt out of the way and not rip your transom off?
AFAIK, in my Honda tilt system, there is no relief that lets the tilt move the lower unit if it hits something. There is a manual valve that can be opened to release the hydraulic tilt system so the engine can be tilted manually, but this is normally closed. The tilt system needs to be holding with the engine in the down position so that the engine does not lift up when the motor is in reverse gear. You could have a locking valve in the system that locks the tilt when the engine is in reverse and is open when the engine is in forward gear (to allow tilting if it hits something), but there is no mention of such a valve in the Honda manuals I have. Alternatively, there could be a mechanical latch that engages in the tilt mechanism to lock the tilt with the motor is in reverse. Don't see that either.
