61
BRUSH INSPECTION ANDREPLACEMENT
Brush life varies. It depends on the load on the motor.
Check the brushes after the first 50 hours of use for a
new machine or after a new set of brushes has been
installed. After the first check, examine them after
about 10 hours of use until such time that replacement
is necessary.To inspect the brushes, proceed as
follows:
DISCONNECTMACHINEFROM POWER
SOURCE.
1. Remove three screws (A) Fig. 41 and remove motor
cover (B).
3. Fig. 43 illustrates one of the brushes (E) removed
from the holder (C). When the carbon on either brush
(E) is worn to 3/16”in length or if either spring (F) or
shunt wire is burned or damaged in any way, replace
both brushes. If the brushes are found to be
serviceable after removing, reinstall them in the same
position.
2. The brushes are located in the two holders (C)
Fig. 42.Remove spade type terminal connector (D) and
pull out brush holders (C).
A
B
Fig. 41
Fig. 42
D
C
C
Fig. 43
F
E
C
IMPORTANT
To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment (including brush inspection and
replacement) should be performed by authorized service centers or other qualified service organizations, always using
identical replacement parts.