LUCAS Alternator With Integral Regulator: Overhaul: Testing: Stator

Connect 12-volt battery and 36-watt test lamp to two of the stator connections. Then repeat test using any other combination of two of the three connections. If lamp fails to light in either test, stator has an open coil. Using a 110-volt A.C. supply and a 15-watt test lamp, check for insulation between any one of the three stator connections and stator laminations. If lamp lights, stator should be replaced.