ScottinAZ
Master Chief Petty Officer
- Joined
- Jun 25, 2009
- Messages
- 831
ok, if there is a more appropriate area mods, please move this....
boat and trim system in question is a 1980 Galaxy with a 120 Merc engine/drive combo (MC-1 IIRC)
the trim WILL NOT go down on the switch.... I have traced it to a likely stuck shuttle valve on the "up" circuit that is not releasing the pressure and allowing fluid to return to the reservoir in "down" mode.....
since this is inside the pump, and as per Mercruiser and Prestolite is therefore unserviceable, I need to replace the damn pump.... most I see on Ebay when chasing the part number are just the motor and reservoir.... Mine are both good, its the pump module that is not working.....
since I cannot seem to source a pump at a reasonable cost, is there a way to retrofit a later Alpha One (gen 1 or 2) to this boat, and get it actually working.... The "new" pump specified uses inverted flare fittings on both "up" and "down" ports, dispensing with the idiotic plastic line that mine has (no biggie, the new hose I just installed from the transom to the reverse lockout is that size....
Where is the reverse lockout located in the Alpha pumps, is it internal to the pump valving, or is it still external like the old Prestolite high pressure/low flow such as I have.
I dont mind a bit of mickey mousery to get it working, and above all safe, but trying to find a complete working pump to directly replace mine at a reasonable cost (less than the value of the boat....) is seemingly impossible....
im about ready to do the unthinkable, and pull the pump off my other boat (OMC/Volvo drive) and make that work.....
boat and trim system in question is a 1980 Galaxy with a 120 Merc engine/drive combo (MC-1 IIRC)
the trim WILL NOT go down on the switch.... I have traced it to a likely stuck shuttle valve on the "up" circuit that is not releasing the pressure and allowing fluid to return to the reservoir in "down" mode.....
since this is inside the pump, and as per Mercruiser and Prestolite is therefore unserviceable, I need to replace the damn pump.... most I see on Ebay when chasing the part number are just the motor and reservoir.... Mine are both good, its the pump module that is not working.....
since I cannot seem to source a pump at a reasonable cost, is there a way to retrofit a later Alpha One (gen 1 or 2) to this boat, and get it actually working.... The "new" pump specified uses inverted flare fittings on both "up" and "down" ports, dispensing with the idiotic plastic line that mine has (no biggie, the new hose I just installed from the transom to the reverse lockout is that size....
Where is the reverse lockout located in the Alpha pumps, is it internal to the pump valving, or is it still external like the old Prestolite high pressure/low flow such as I have.
I dont mind a bit of mickey mousery to get it working, and above all safe, but trying to find a complete working pump to directly replace mine at a reasonable cost (less than the value of the boat....) is seemingly impossible....
im about ready to do the unthinkable, and pull the pump off my other boat (OMC/Volvo drive) and make that work.....