RIDGID R2740 - Manual (Page 16)

16
MAINTENANCE
WARNING:
When servicing use only identical RIDGID
®
replacement parts. Use of any other parts may
create a hazard or cause product damage.
WARNING:
Always wear safety goggles or safety glasses with
side shields during power tool operation or when
blowing dust. If operation is dusty, also wear a
dust mask.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline,
petroleum-based products, penetrating oils, etc.,
come in contact with plastic parts. Chemicals can
damage, weaken or destroy plastic which may
result in serious personal injury.
Electric tools used on fiberglass material, wallboard,
spackling compounds, or plaster are subject to accelerated
wear and possible premature failure because the fiberglass
chips and grindings are highly abrasive to bearings, brushes,
commutators, etc. Consequently, we do not recommended
using this tool for extended work on these types of materials.
However, if you do work with any of these materials, it is
extremely important to clean the tool using compressed
air.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normal operating conditions. Therefore, no further lubrication
is required.
BRUSH REPLACEMENT
See Figure 12.
NOTE: This belt sander is equipped with externally
accessible brushes.

Unplug the sander.
WARNING:
Failure to unplug the tool could result in accidental
starting causing possible serious injury.
 Remove brush caps () using a screwdriver.
 Remove brush assemblies ().
 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.
Fig. 1
BRUSH
CAP
BRUSH
ASSEMBLY
BRUSH
CAP