I finally got the time to work on the project boat that I have been keeping on the side of my house. The boat has few problems, but since I?m more of less using it to teach myself on how to work on boat, I don?t mind it as long as it doesn?t cost me too much extra money. This boat is a 1982 Runabout with Mercury inline 6 outboard.
The first problem I decided to tackle is the trim and tilt system. Both up and down trim/tilt function correctly with trim motor whining away in both modes and outdrive moving up and down as expected. Although I?m not entirely sure if the down motion is simply due to the gravity or if the down circuit is actually working. The major problem in the trim/tilt system is the outdrive would not stay down if the motor is shift into reverse. Needless to say, this poses a bit of problem when it comes to close quarter maneuver. Oh, yes, in case if you are wondering, I did turn the reverse lock knob all the way left.
Today, I decided to remove the trim pump/motor unit and get a good look at the unit on the work bench. While testing the pump/motor unit, I noticed if I energized the blue wire to the pump motor, two steady streams of fluid would pump out of the two ports mean for the up trim hydraulic hoses. Naturally, I assume if I energized the green wire, fluid would come out of the two ports mean for the down trim hydraulic hoses. To my surprise, oil did not come out of the down trim ports. It did spit a few drop but, nothing else comes out with motor running faster and faster. It?s as if motor is not loaded due lack of hydraulic fluid. I did confirm there are more fluid in the reservoir.
After hours searching on Google and iBoats, I found a few pictures of disassembled pump pictures. Based on what I observed in the pictures, it would appears the up trim takes fluid from the reservoir while down trim may(?) take fluid from the return fluid in the up trim hose. After all, there is only one intake screen.
I could be completely wrong. So, any one here that may have experience working those legacy mercury parts, I would appreciate your input . Just to recap, if the green wire is energized, should the fluid come out of the down trim ports on the control valve body?
Attached are a picture of my pump and a picture of the pump body from another picture I found on iBoats.
Thanks
The first problem I decided to tackle is the trim and tilt system. Both up and down trim/tilt function correctly with trim motor whining away in both modes and outdrive moving up and down as expected. Although I?m not entirely sure if the down motion is simply due to the gravity or if the down circuit is actually working. The major problem in the trim/tilt system is the outdrive would not stay down if the motor is shift into reverse. Needless to say, this poses a bit of problem when it comes to close quarter maneuver. Oh, yes, in case if you are wondering, I did turn the reverse lock knob all the way left.
Today, I decided to remove the trim pump/motor unit and get a good look at the unit on the work bench. While testing the pump/motor unit, I noticed if I energized the blue wire to the pump motor, two steady streams of fluid would pump out of the two ports mean for the up trim hydraulic hoses. Naturally, I assume if I energized the green wire, fluid would come out of the two ports mean for the down trim hydraulic hoses. To my surprise, oil did not come out of the down trim ports. It did spit a few drop but, nothing else comes out with motor running faster and faster. It?s as if motor is not loaded due lack of hydraulic fluid. I did confirm there are more fluid in the reservoir.
After hours searching on Google and iBoats, I found a few pictures of disassembled pump pictures. Based on what I observed in the pictures, it would appears the up trim takes fluid from the reservoir while down trim may(?) take fluid from the return fluid in the up trim hose. After all, there is only one intake screen.
I could be completely wrong. So, any one here that may have experience working those legacy mercury parts, I would appreciate your input . Just to recap, if the green wire is energized, should the fluid come out of the down trim ports on the control valve body?
Attached are a picture of my pump and a picture of the pump body from another picture I found on iBoats.
Thanks