(25) Remove four bolts (20) from motor casing (23) and fan-end plate (21).
(26) Tap fan-end plate (21) with a soft-headed mallet to break its bond and remove fan-end plate (21)
from motor casing (23).
Objects blown by compressed air can cause serious eye injury.
Always west protective goggles when using compressed air.
(1) Blow out dirt inside motor casing with compressed air.
Drycleaning solvent Fed. Spec. P-D-680 is potentially
dangerous. Avoid repeated and prolonged breathing of vapors
and skin contact. Do not use near open flame, arcing equipment
or other ignition sources. Always wear protective clothing and
(2) Clean dust and dirt from fan fins, rotor fins, inside fan cover, and both end plates with cleaning solvent
Fed. Spec. P-D-680 and air dry.
(3) Blow out any remaining dust and dirt.
(4) Clean non-electrical metal components, including bearings, with cleaning solvent Fed. Spec.
(5) Air dry parts.
(6) Wrap dry bearings in a soft, clean, lint free cloth.
(1) Check metal parts, particularly cooling fans and rotor shaft, for signs of wear.
(2) Record damage for later repair.
(3) Inspect motor casing, coils, and leads for damage to insulation and wires. Check for signs of
overheated coils, deteriorated coil end bindings and lashings, and missing or broken coil retainer strips.
(4) Check ball bearings for flat spots or lateral play.
(5) Inspect wavy washer for damage.