Maintenance - Makita HR4500C Betriebsanleitung

Chipping/Scaling/Demolition (Fig. 15)
Set the change lever to the
firmly with both hands. Turn the tool on and apply slight
pressure on the tool so that the tool will not bounce
around, uncontrolled. Pressing very hard on the tool will
not increase the efficiency.
Depth gauge (Fig. 16)
The depth gauge is convenient for drilling holes of uni-
form depth. Loosen the clamp screw and adjust the
depth gauge to the desired depth. After adjusting, tighten
the clamp screw firmly.
NOTE:
The depth gauge cannot be used at the position where
the depth gauge strikes against the gear housing/motor
housing.
Indicator lamp (Fig. 17)
The green power-ON indicator lamp lights up when the
tool is switched ON. If the indicator lamp is lit but the tool
does not start, the carbon brushes may be worn out, or
the electric circuit or the motor may be defective. If the
indicator lamp does not light up and the tool does not
start, the ON/OFF switch or the mains cord may be
defective.
The red service indicator lamp lights up when the carbon
brushes are nearly worn out to indicate that the tool
needs servicing. After approx. 8 hours of use, the motor
will automatically be shut off.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Replacement of carbon brushes (Fig. 18 & 19)
Whenever carbon brushes must be replaced, they cut out
the tool automatically. When this occurs, loosen the
screws which secure the brush holder cover. Remove the
brush holder cover. Then replace both carbon brushes at
the same time. Use only identical carbon brushes.
Lubrication
This tool requires no hourly or daily lubrication because it
has a grease-packed lubrication system. Lubricate the
tool every time the carbon brushes are replaced.
Run the tool for several minutes to warm it up. Switch off
and unplug the tool.
Loosen the six screws and remove the handle. Note that
the top screws are different from other screws. (Fig. 20)
Disconnect the connector by pulling it. (Fig. 21)
Remove the crank cap using a hex wrench. (Fig. 22)
Rest the tool on the table with the bit end pointing
upwards. This will allow the old grease to collect inside
the crank housing. Wipe out the old grease inside and
replace with a fresh grease (60 g). Use only Makita genu-
ine hammer grease (optional accessory). Filling with
more than specified amount of grease (approx. 60 g) can
cause faulty hammering action or tool failure. Fill only
with the specified amount of grease. Reinstall the crank
cap and tighten with the hex wrench. (Fig. 23)
Connect the connector and reinstall the handle. (Fig. 24)
CAUTION:
• Be careful not to damage the terminals or lead wires
especially when wiping out the old grease or installing
the handle.
g
symbol. Hold the tool
• Do not tighten the crank cap excessively. It is made of
resin and is subject to breakage.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
ACCESSORIES
CAUTION:
These accessories or attachments are recommended for
use with your Makita tool specified in this manual. The
use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory or
attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• SDS-MAX tungsten-carbide tipped bit
• SDS-MAX bull point
• SDS-MAX cold chisel
• SDS-MAX scaling chisel
• SDS-MAX tile chisel
• SDS-MAX clay spade
• Depth gauge
• Side grip
• Bit grease (100 g)
• Hammer grease (30 g)
• Carrying case
• Safety goggle
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