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AUXILIARY HANDLEAll hammers require a short period of time to
The tool must be supported with thewarm up. Depending on the room
auxiliary handle, which can be swiveled 360u.temperature, this time may vary from
To reposition and/or swivel the handle,approximately 15 seconds (90uF) to 2
loosen the hand grip, move the handle to theminutes (32uF). A new hammer requires a
desired position along the barrel andbreak-in period before full performance is
securely retighten the hand grip.realized. This period may require up to 5
hours of operation.
POWER INDICATOR LIGHT
When you plug your tool into the powerAn electric hammer is likely to be the most
source, the power indicator light will goexpensive portable tool at the construction
OON� indicating the tool is receiving power.job. The long wear and efficient operation of
the BOSCH hammers will more than justify
"TOOL TIPS"
the cost for tools of this type. As earlier
For the best penetration rates in concrete,
pointed out, sharp accessories as well as
run the tool with a steady pressure, but doclean air vents are necessary for efficient
not use excessive force as this will decrease
operation. Establish and follow a set
the efficiency of the tool.
maintenance program.
Maintenance
Servicedependable service. To maintain peak
efficiency of the motor, we recommend
Preventive maintenance
!WARNING
performed by unauth-every two to six months the brushes be
examined. Only genuine Bosch replacement
orized personnel may result in misplacing
of internal wires and components whichbrushes specially designed for your tool
should be used.
could cause serious hazard. We
recommend that all tool service be
BEARINGS
performed by a Bosch Factory Service
After about 300-400 hours of operation, or at
Center or Authorized Bosch Service Station.
every second brush change, the bearings
SERVICE REMINDER LIGHTshould be replaced at Bosch Factory Service
When the service reminder light lights up orCenter or Authorized Bosch Service Station.
blinks, this will indicate that the cut-outBearings which become noisy (due to heavy
carbon brushes will switch off the tool inload or very abrasive material cutting) should
approximately 8 hours. After that period, thebe replaced at once to avoid overheating or
light will go off and the tool will stop running.motor failure.
The tool must then be sent to a service
REPLACEMENT OF CORD AND
center for service.
CARBON BRUSHES
TOOL LUBRICATIONYour tool is designed to provide a qualified
Your Bosch tool has been properlyservice technician optimal access to replace
lubricated and is ready to use. It isthe carbon brushes and the cord. This
recommended that tools with gears beprovides the service technician the ability to
regreased with a special gear lubricant atreplace these components without the need
every brush change.of disassembling the entire tool housing.
CARBON BRUSHES
The brushes and commutator in your tool
have been engineered for many hours of
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ACEC
BOSCH
