Motor is a 1986 Merc 75 HP 4 cylinder (serial #0A994929) I picked up that sat up a good number of years. Great compression, but many things have deteriorated due to age/weather exposure. Reworked the engine fuel/ignition systems and replaced transmission fluid. Engine is now running great.
The trim/tilt system is described as a type "B" in the manual and has two trim cylinders, a single large tilt cylinder and an Eaton rectangular pump.
Last week, while operating the trim/tilt, the motor seemed slow to start and there was smoke from underneath the lower cowl, like a high current draw, but is still working. I had just reworked the steering tube and hadn't yet lubed the tilt tube, so the tilt tube was stiff.
I've made the decision if I'm going to mess with it, I'd rather just rework the whole system than just fix a problem. That way I know what I've got, since this motor is on a boat that was just completely restored.
I don't want to completely rebuild the system, but want to replace the known common failure items in the system. I'd like to get a kits for the cylinders, etc. that include o-rings and other common failure items. I'd also like to pull the motor down and check it's brushes and such, clean the crud out and replace it's o-rings/seals as well. But after looking at the diagrams on various parts sites, I'm not sure what to buy.
I have a manual that shows how to test and rework the system and have or can get any tool I need and a clean work area to do the work.
Can someone guide me in what kits/parts to buy for this system to rework it and what to look for when doing so? I know cleaning the contacts and inspecting the wires is a good idea, but should I consider replacing the wires? These are the types of things I'm not sure on.
Thank you,
Dave
The trim/tilt system is described as a type "B" in the manual and has two trim cylinders, a single large tilt cylinder and an Eaton rectangular pump.
Last week, while operating the trim/tilt, the motor seemed slow to start and there was smoke from underneath the lower cowl, like a high current draw, but is still working. I had just reworked the steering tube and hadn't yet lubed the tilt tube, so the tilt tube was stiff.
I've made the decision if I'm going to mess with it, I'd rather just rework the whole system than just fix a problem. That way I know what I've got, since this motor is on a boat that was just completely restored.
I don't want to completely rebuild the system, but want to replace the known common failure items in the system. I'd like to get a kits for the cylinders, etc. that include o-rings and other common failure items. I'd also like to pull the motor down and check it's brushes and such, clean the crud out and replace it's o-rings/seals as well. But after looking at the diagrams on various parts sites, I'm not sure what to buy.
I have a manual that shows how to test and rework the system and have or can get any tool I need and a clean work area to do the work.
Can someone guide me in what kits/parts to buy for this system to rework it and what to look for when doing so? I know cleaning the contacts and inspecting the wires is a good idea, but should I consider replacing the wires? These are the types of things I'm not sure on.
Thank you,
Dave