MAIN GENERATOR (cont)
30. Perform the armature and stator megohmmeter test by the following:
A minimum of 500 V at 1 megohm is required for this test.
Place lead (1) of megohmmeter (2) on shaft or core of armature (44).
Place lead (3) of megohmmeter (2) on one of the commutator bars. Note indication on megohmmeter. Place lead
(3) on each successive bar around the commutator and note indication.
Procedures specify the heating of parts to aid in disassembly and assembly. Heated
parts may cause injury to personnel if hand protection is not worn when handling.
Wear protective gloves for maximum protection.
If an indication of less than 3 megohms is obtained, bake armature for 4 hours at 230°F (110°C) in a convection
oven. Recheck after cooling armature to room temperature. If the indication is still low, replace the armature.