MAINTENANCE
65
7400 (GM) 330970 (12--03)
10. Pull out the front brush and then the rear
brush.
11. Line up the drive end of the new or rotated
brushes with the brush drive plugs. The
cylindrical scrub brushes must be installed
with the V-patterns on the brushes pointing
towards each other. Slide the brushes onto
the brush drive plugs.
NOTE: The scrub head may need to be raise a
little to insert new brushes.
12. Insert the idler plugs into the brushes.
13. Line up the brush wrap guide pins with idler
plate. Line up the idler mounting arm with
the mounting pins.
14. Secure the idler mounting arm to the scrub
head with the mounting bolt.
15. Pull the locking collar back on the leveling
rod end and snap the leveling rod end onto
the ball stud.
16. Adjust the brush pattern as described in
CHECKING AND ADJUSTING SCRUB
BRUSH PATTERN
.
CHECKING AND ADJUSTING SCRUB BRUSH
PATTERN
1. Apply chalk, or some other material that will
not easily blow away, to a smooth, level
floor.
2. Raise the scrub head. Position the scrub
head over the chalked area.
3. Set the parking brake.
