e. Component Tests.
(1) Using an ohmmeter, perform resistance, short, and ground checks on motor casing coils. (Refer to
schematic, figure 1 1 2.)
(2) If coils do not test properly, send motor casing to next higher level of maintenance.
f. Repair or Replace.
(1) Replace all gaskets, seals, and O-rings.
(2) Replace ail damaged nuts, bolts, screws, washers, shaft keys, Woodruff keys, and wavy washers.
(3) Replace damaged, worn, or unserviceable ball bearing assemblies
(4) Repack serviceable clean bearings with fresh bearing grease before installation.
(5) Deburr rotor shaft and remove any residue by buffing with fine emery cloth.
(6) Straighten bent or dented cooling fan blades and ventilation louvers.
(7) Replace damaged, unrepairable, or unserviceable motor casing assembly.
(8) Send all unserviceable, unrepairable, or damaged motor assemblies to next higher level of
(9) Repaint, as needed, in accordance with Standard Operating Procedures.
g. Reassembly. (Figure 3-6)
(1) Align prepunched indexing marks on motor casing (23) (figure 3-6) and fan-end plate (21).
(2) Install fan-end plate (21) to motor casing (23) with four bolts (20).
(3) Press ball bearing (25) on rotor shaft (27).
(4) Press ball bearing (28) on rotor shaft (27).
(5) Slide wavy washer (24) on rotor shaft (27).
Motor casing wiring can be snagged or broken by rotor shaft.
Take care not to damage wires when installing rotor shaft.