BRUSH INSPECTION AND
REPLACEMENT
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:
DISCONNECT MACHINE FROM POWER SOURCE.
1.Remove three screws (A) Fig. 41 and remove motor cover (B).
2. The brushes are located in the two holders (C)
Fig. 42. Remove spade type terminal connector (D) and pull out brush holders (C).
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.
B
A
Fig. 41
D 
C |
| C |
Fig. 42
F
E
C
Fig. 43
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.
20
