Maintaining Your Abrasive Cut-Off Saw; Motor Brush Replacement - skilsaw SPT64MTA Instrucciones De Funcionamiento Y Seguridad

1619PA9299 09-15 SPT64MTA.qxp_SPT64MTA 9/14/15 7:02 AM Page 14
WARNING
misplacing of in ternal wires and components which could cause
serious hazard. We recommend that all tool service be
performed by a Bosch Factory Service Center or Autho rized
Bosch Service Station.
Your Skilsaw tool has been properly lubricated and is ready to
use. It is recommended that tools with gears be regreased with a
special gear lubricant at every brush change.
The brushes and commutator in your tool have been engineered
for many hours of dependable service. To maintain peak
efficiency of the motor, we recommend every two to six months
the brushes be examined. Only genuine Skilsaw replacement
brushes specially designed for your tool should be used.
After about 300 - 400 hours of operation, or at every second
brush change, the bearings should be replaced at a Bosch
Factory Service Center or Authorized Bosch Service Station.
Bearings which become noisy (due to heavy load or very
abrasive material cut ting) should be replaced at once to avoid
overheating or motor failure.

Motor Brush Replacement

To Inspect or Replace Brushes:
1. Unplug the saw.
2. Remove the brush cap on the motor using a wide flat
blade screwdriver.
Note: The brush cap is spring loaded by the brush
assembly.
3. Pull out the brush (Figure 11). Repeat for the opposite
side.
NOTE: If installing the existing brush or brushes, make sure
the brush goes in the same way it came out. Otherwise a
break-in period will occur that will reduce motor performance
and increase brush wear.
4. Install new brush. The two (2) tabs on the brush terminal
go in the same hole the carbon part fits into.
5. Tighten the brush cap but do not overtighten.
Maintenance
Service
Preventive maintenance performed by un -
autho rized person nel may result in
Tool Lubrication
Carbon Brushes
Bearings
Cleaning
To avoid accidents always disconnect the
tool from the power supply before cleaning
WARNING
or per form ing any maintenance. The tool may be cleaned most
effec tively with compressed dry air. Always wear safety goggles
when cleaning tools with compressed air.
After each use disconnect the plug from the power source,
remove the wheel and washers to wipe deposits of dust from
housing and wheel guards. The lower wheel guard should be
wiped occasionally with a clean cloth and mild soap to prevent
deterioration from oil and grease. After cleaning check operation
and condition of the lower wheel guard to make certain it is
functional for next use.
Ventilation openings and switch levers must be kept clean and
free of foreign matter. Do not attempt to clean by inserting
pointed objects through openings.
Certain cleaning agents and solvents
damage plastic parts. Some of these are:
CAUTION
gasoline, carbon tetrachloride, chlorinated cleaning solvents,
ammonia and house hold detergents that contain ammonia.
Brush
Terminal
Brush
Cap
FIG. 11
14.
Brush