7.
If the commutator is worn unevenly as shown in Fig. 3-4, replace the entire
armature with a new one. This will significantly increase motor power.
O-Comm clean #1
8.
If the commutator surface is smooth but dark and discolored, clean it with a
LiteBrite commutator cleaning pad until it is a shiny copper color (six to ten twists
by hand) as shown in Fig. 3-6.
O-Comm clean #2
9.
Run a hobby knife in the slots between the commutator segments to remove
loose particles as shown in Fig. 3-7.
Op er a tor's Guide
Electric Motors
3-8
LITE MA CHINES
Figure 3-6.
Figure 3-7.
