Speaking of the Sheave Brake Coil, If anyone should encounter a zero ohm short circuit to ground and still having continuity through the coil (approx. 30 ohms) condition, the problem is probably that the coil has vibrated against the end cap of the brake until it shorted. Release all the tension on the brake after measuring the lengths and pull the end cap. Drill a divot where the short occurred and tape over the coil where the connection to the field wires join the coil. This will save you buying a new coil at a cost of $2K+. We bought the coil before taking apart the brake and found that it could have been a simpler fix.