Fed. Spec. P-D-680 and dry thoroughly.
Always replace brushes when generator is completely
DO not use carbon tetrachloride for
cleaning any part of generator:
of this chemical can cause severe
damage to brushes and commutator.
(1) Before disassembly.
or before tests are performed to eliminate any possibility of further
Rotate armature by hand to make certain it is free. If
armature rotates freely, remove brush cover band and inspect brushes
(2) During disassembly.
(a) Inspect all bolts, screws, and nuts for worn or damaged
Do not use safety de-
vices a second time.
(b) Visually inspect housing parts, support, fan, drive shaft
part of armature, and other internal parts for damage such as cracks,
burned insulation, corrosion, rust, and other damage that can be
Replace all damaged or defective
detected by visual inspection.