I blew the diodes on my 1988 M25XP 51a Motorola, which is fine: it had a wobble in the shaft and has done its duty.
(I mistook the Reg terminal for a Voltage Sense terminal, and it didn't like that. If someone could explain what that Reg terminal is actually for, I'd appreciate it.)
I ordered a 51a replacement on Amazon from RareElectrical for $165, needed to get one quickly for vacation next week.
I also ordered the 105a replacement and a new pulley from catalinadirect for $210 because it comes with the 2" adapter, but it won't arrive until Monday. I could not find a direct-fitting replacement 90a or 105a on amazon. I expect I will install the 105a and return the 51a.
The new one pictured below has the same connections as the factory with the addition of a sense wire. The one from CD does not have a sense wire, but does have a voltage adjustment on the regulator to compensate for longer cable runs.
Here are some pictures of the two side-by-side.
My house bank is 4x 6v 230ah. We have a 12v fridge, 1500w inverter for a 700w microwave that we use frequently, 12v fans that run many nights on the hook. We also have inflatable paddle boards that pump to 15 psi using a 120w pump. There have been mornings where the house bank did not have enough power to start the engine.
Any thoughts or observations? Should I wait on the 105a from CD and use it?
(I mistook the Reg terminal for a Voltage Sense terminal, and it didn't like that. If someone could explain what that Reg terminal is actually for, I'd appreciate it.)
I ordered a 51a replacement on Amazon from RareElectrical for $165, needed to get one quickly for vacation next week.
I also ordered the 105a replacement and a new pulley from catalinadirect for $210 because it comes with the 2" adapter, but it won't arrive until Monday. I could not find a direct-fitting replacement 90a or 105a on amazon. I expect I will install the 105a and return the 51a.
The new one pictured below has the same connections as the factory with the addition of a sense wire. The one from CD does not have a sense wire, but does have a voltage adjustment on the regulator to compensate for longer cable runs.
Here are some pictures of the two side-by-side.
My house bank is 4x 6v 230ah. We have a 12v fridge, 1500w inverter for a 700w microwave that we use frequently, 12v fans that run many nights on the hook. We also have inflatable paddle boards that pump to 15 psi using a 120w pump. There have been mornings where the house bank did not have enough power to start the engine.
Any thoughts or observations? Should I wait on the 105a from CD and use it?