BM 1619929519 12/02 12/10/02 2:52 PM Page 8
FIG. 4
Drilling/Hammering: Vario-Lock:Hammering Only:
used for drilling with solidallows chisel to be set in one of 12used for chipping
carbide bits and core bitspositions (right or left O0� position)and demolition work
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
SLIP CLUTCHhours of operation.
The tool has a internal pre-set slip clutch.A rotary hammer is likely to be the most
The output spindle will stop rotating if theexpensive portable tool at the construction
accessory binds and overloads the tool.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 do
clean 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
ServiceCARBON BRUSHES
Preventive maintenanceThe brushes and commutator in your tool
!WARNING
performed by unauth-have been engineered for many hours of
orized personnel may result in misplacingdependable service. To maintain peak
of internal wires and components whichefficiency of the motor, we recommend
could cause serious hazard. Weevery two to six months the brushes be
recommend that all tool service beexamined. Only genuine Bosch replacement
performed by a Bosch Factory Servicebrushes specially designed for your tool
Center or Authorized Bosch Service Station.should be used.
TOOL LUBRICATIONBEARINGS
Your Bosch tool has been properlyEvery second brush change, the bearings
lubricated and is ready to use. It isshould be replaced at Bosch Factory Service
recommended that tools with gears beCenter or Authorized Bosch Service Station.
lubricated with Bosch lubricant at everyBearings which become noisy (due to heavy
brush change.load or very abrasive material cutting) should
be replaced at once to avoid overheating or
motor failure.
-8- |
ACEC
BOSCH
