TM 5-4520-253-13
R E P A I R B L O W E R M O T O R ( C O N T)
4.
5.
6.
Check commutator (2). Replace armature (3) and bearings (4 and 5) if commutator is scored or
badly burned.
If commutator is lightly scored or dirty, clean with fine sandpaper.
Slowly rotate bearings (4 and 5) by hand. If roughness is noted in either bearing, pull both
bearings and press on new bearings.
Check fan assemblies (6 and 7) for bent or damaged parts. Replace defective fan assemblies.
4-52
