MAINTENANCE
MOTOMAN 7-7 MH-Series with MotoMount Positioner Manual
Figure 7-6 Brush Removal MH1000/3000
8. Slide the old brush out of the housing and replace it with the new one.
9. Put the brush holder back into housing compartment until the both holes on
the nut plate are aligned with holes in the housing.
10. Insert both screws through housing and into nut plate. Thread the screws into
nut plate loosely.
11. Push the brush holder up in front of the retaining edge and hold steady.
12. Squeeze the brush retaining spring and push the brush against the faceplate
then release. The spring must hold the brush firmly against the face plate (see
Figure 7-2).
CAUTION!
The weld ground brush must be hold firmly and evenly against the
faceplate. Uneven contact can subject the gear reducer bearing to
weld current.
13. Tighten the screws to 6.0 N•m (4.4 lbf-ft.).
14. Insert the ground cables onto the ground posts.
MOTOR
BRUSH
HOUSING
HEADSTOC
DRIVE ASSEMBLY
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