RIDGID R2740 Operator's Manual page 12

MAINTENANCE
 Check for wear. Replace both brush assemblies when
either has less than 1/4 in. length of carbon remaining.
NOTE: Do not replace one side without replacing the
other.
 Reassemble using new brush assemblies. Make sure
curvature of brush matches curvature of motor and that
brush moves freely in brush tube.
 Reassemble by reversing the steps listed above.
 Tighten all brush caps securely. Do not over tighten.
TIMING BELT REPLACEMENT
See Figure 13, page 15.
 Unplug the sander.
 Remove dust bag.
 Remove sanding belt from sander. Follow instructions on
page 9 to remove sanding belt.
NOTE: Removing sanding belt will simplify the process
of installing a new timing belt.
 Remove belt cover screw and belt cover.
NOTE: FIGURES (ILLUSTRATIONS) START ON PAGE 14
AFTER FRENCH AND SPANISH LANGUAGE SECTIONS
 Force old timing belt from one of the small pulleys with
a screwdriver and remove it while turning the large
pulley. If it is worn out, simply cut the old timing belt and
remove.
 Install new timing belt over large pulley and one of the
small pulleys first.
 Press the belt onto the other small pulley, turning the
large pulley as you press the belt on.
 Reinstall belt cover and screw.
 Tighten screw securely.
 Reinstall the sanding belt.
WARNING:
Never attempt to operate the belt sander without
the belt cover in place.
12 - English