Thanks for your reply Shrew. Yes, I will certainly put new seals in the lift cylinder - easy enough to do. The biggest questions I have deal with the pump and overall lift/trim system theory. You like bullets... Here we go:
1. I have attached a picture of the pump and lift cylinder. The only ID that I have been able to find so far is that this is "the old Chrysler system" Is there not some model number that was assigned to this so I can search for more documentation and parts?
2. I am not a seasoned boat user - this is my first one, although I have worked on some in the past. Looks like I need to find a trim cylinder to work with the setup that I have - remember I bought this at an estate sale - many things need fixed on this boat. From my limited knowledge, looks like when the "up" trim switch is triggered, the trim cylinder fills first and then when it tops out, the lift cylinder begins to fill. When the "down" switch is triggered, why does the motor run if it does not power down? Apparently that only causes the hydraulic pressure to bleed down from the weight of the motor in order to let the motor swivel completely down? What happens if there is no trim cylinder in the system?
3. Is there not some publication that I can buy that shows the pump in detail and how to rebuild and test?
4. Who makes this thing? Chrysler? Force? Mercury? Evinrude? What name do I search under to find info? I see that there is a publication from Force called OB4685 - Force Outboard Parts Catalog. Is this the same as my "old Chrysler system" or do I need to look elsewhere for documentation?
Thanks for the help.