I did a clean/lube on my PW 2466WX Whistle Tender, cleaned/polished the armature plate and brushes, but am having a problem with the solenoid in the relay. When I push the whistle activation button, it hums, but the relay doesn't make contact. I pushed down on the tabs to the right from the base plate, raising the contact on the left, and I have a very strong whistle. I assume the solenoid is an electro magnet that is to lift the plate to make the relay contacts, how do I get this to function properly.
Thanks in advance - Tony