Specifications include, but are not limited to: All units shall be completely disassembled and inspected for worn parts by the Vendor. • Casing and hard parts shall be degreased and steel shot by machine method to remove rust and burrs that may affect the performance of the unit by the Vendor. • Armatures shall be cleaned and checked for worn commutators, shorts, grounds, worn shaft, loose or burned windings by the Vendor. If any of these components prove to be faulty the complete armature shall be replaced with heat treated shafts by the Vendor. • All field coils shall be cleaned and checked by the Vendor. Fields shall be replaced using new plastic or cloth wrapped heavy copper windings if found defective or faulty by the Vendor.