I have a T10404R timer box on my pump and polaris. Just after getting the pool the polaris timer went out. The pool guy replaced it. Now it's out again. I can still manually turn the polaris on and off.
So far, I've take the motor off the timer that doesn't work. On an ohmeter set to 20k, it measures about 7 when I put a lead on each of the wires. I did the same on the pool pump motor without taking it off and got the same reading. When I took the motor off the timer, the timer now moves freely but the motor gear doesn't turn when I try to spin it. I did not take the pump timer motor off for a comparison because that one has a good bit more wiring attached to it.
I exptected the ohmeter to read 0 on this thing, but it doesn't. Does it still seem likely that this is what's busted since it won't turn, but the timer mechanism itself will. It'd be nice to just replace this little motor instead of the whole shooting match, if possible.
EDIT: When I say the motor won't turn I'm refering to the gear that is external to the motor. This is the one that connects to the timer wheel itself. I have discovered that the very first gear in the motor can be turned. It in turn, turns two others. Whether the gearing down process makes these other gears turn, but so slowly that I can't see, I don't know. Regardless, I can't make the gear that connects to the timer visibily turn.