MikeOfWarr
Recruit
- Joined
- Jul 30, 2015
- Messages
- 3
[FONT="]Short story:
The 10 amp fuse for the VP external tilt/trim pump blows when boat is in water. Replace fuse when boat on trailer for couple days (time for outdrive to dry out) the tilt/trim works fine.
Details:
I have a 2007 Chaparral Sunesta 234 with a Volvo Penta 5.7 with the DPS-A outdrive. This outdrive has the External tilt/trim pump mounted next to the outdrive. After a day on the lake I tilted the outdrive up to load on the trailer and pulled up to my covered storage area at the marina. After stowing everything away I tried to lower the outdrive as I always do when the boat is stored. Nothing happened.[/FONT]
[FONT="]The 10 amp fuse located in the fuse block on top of the engine had blown. Inserted a spare fuse and it immediately blew when I tried to lower the outdrive. So I towed the boat home and began troubleshooting. I removed both relays and the blown fuse. Turned battery power off and removed the trim switch from the control handle. Tested with a multi-meter and appeared to be working fine in both switch positions. No sign of burned or bare wires. [/FONT]
[FONT="]Not knowing what I was doing, I loosened the two allen type screws next to the outdrive on the pump cover where the 4 hydraulic lines go in (I was looking for possible electrical connections in that area). When I began to loosen the screws hydraulic fluid started leaking out and the drive slowly came down. I quickly tightened the screws and the fluid stopped. Not much fluid leaked out, just a small puddle in the driveway. Probably only 2 or 3 ounces. [/FONT]
[FONT="]So I topped the fluid up, replaced the relays and inserted a new 10 amp fuse all the connections were clean and no corrosion present. Turned on battery switch, tried the trim switch and magically the trim motor started working. I have a second trim switch back at the transom and it functions also. After cycling the outdrive up and down once I topped off the fluid again. Cycled the outdrive a few more times and added more fluid. Did this process 5 times until I could no longer top off the fluid. When all was said and done I had added a little over a half a quart of fluid and did not blow any more fuses.[/FONT]
[FONT="]Not sure how I fixed the problem but was wondering if low trim pump fluid would cause the pump motor to blow a fuse. [/FONT]
[FONT="]So I take the boat back to the lake, launch it into the water and the fuse blows again.
I talked to a mechanic at the nearby marina and he indicated Volvo Penta had problems with their external tilt/trim pump leaking fluid but not aware of a electrical problem unless the motor was bad. He said the tilt trim sensor was on a separate circuit and not the fault of the fuse blowing (helm gauge still showed the correct position of the outdrive). I cannot see any exposed wires around the external pump so I am confused why the fuse would blow in the water but not on the trailer (after returning home and time to dry out).
So back at home the second time, I replaced the fuse and the tilt trim pump is working again. I tried both switches, the one on the control handle and the aft remote tlit/trim switch. Both worked fine as the outdrive goes up and down without issue. I sprayed water around the tilt/trim sensor and the external pump but could not replicate the fuse blowing.
Any ideas as to what the problem could be?[/FONT]
The 10 amp fuse for the VP external tilt/trim pump blows when boat is in water. Replace fuse when boat on trailer for couple days (time for outdrive to dry out) the tilt/trim works fine.
Details:
I have a 2007 Chaparral Sunesta 234 with a Volvo Penta 5.7 with the DPS-A outdrive. This outdrive has the External tilt/trim pump mounted next to the outdrive. After a day on the lake I tilted the outdrive up to load on the trailer and pulled up to my covered storage area at the marina. After stowing everything away I tried to lower the outdrive as I always do when the boat is stored. Nothing happened.[/FONT]
[FONT="]The 10 amp fuse located in the fuse block on top of the engine had blown. Inserted a spare fuse and it immediately blew when I tried to lower the outdrive. So I towed the boat home and began troubleshooting. I removed both relays and the blown fuse. Turned battery power off and removed the trim switch from the control handle. Tested with a multi-meter and appeared to be working fine in both switch positions. No sign of burned or bare wires. [/FONT]
[FONT="]Not knowing what I was doing, I loosened the two allen type screws next to the outdrive on the pump cover where the 4 hydraulic lines go in (I was looking for possible electrical connections in that area). When I began to loosen the screws hydraulic fluid started leaking out and the drive slowly came down. I quickly tightened the screws and the fluid stopped. Not much fluid leaked out, just a small puddle in the driveway. Probably only 2 or 3 ounces. [/FONT]
[FONT="]So I topped the fluid up, replaced the relays and inserted a new 10 amp fuse all the connections were clean and no corrosion present. Turned on battery switch, tried the trim switch and magically the trim motor started working. I have a second trim switch back at the transom and it functions also. After cycling the outdrive up and down once I topped off the fluid again. Cycled the outdrive a few more times and added more fluid. Did this process 5 times until I could no longer top off the fluid. When all was said and done I had added a little over a half a quart of fluid and did not blow any more fuses.[/FONT]
[FONT="]Not sure how I fixed the problem but was wondering if low trim pump fluid would cause the pump motor to blow a fuse. [/FONT]
[FONT="]So I take the boat back to the lake, launch it into the water and the fuse blows again.
I talked to a mechanic at the nearby marina and he indicated Volvo Penta had problems with their external tilt/trim pump leaking fluid but not aware of a electrical problem unless the motor was bad. He said the tilt trim sensor was on a separate circuit and not the fault of the fuse blowing (helm gauge still showed the correct position of the outdrive). I cannot see any exposed wires around the external pump so I am confused why the fuse would blow in the water but not on the trailer (after returning home and time to dry out).
So back at home the second time, I replaced the fuse and the tilt trim pump is working again. I tried both switches, the one on the control handle and the aft remote tlit/trim switch. Both worked fine as the outdrive goes up and down without issue. I sprayed water around the tilt/trim sensor and the external pump but could not replicate the fuse blowing.
Any ideas as to what the problem could be?[/FONT]