Maintenance - Makita HR2010 Betriebsanleitung

Switch action (Fig. 6)
To start the machine, simply pull the trigger. Machine
speed is increased by increasing pressure on the
trigger. Release the trigger to stop.
CAUTION:
• Before plugging in the machine, always check to
see that the switch trigger actuates properly and
returns to the "OFF" position when released.
• Do not tape, tie or otherwise secure the trigger in
the "ON" position.
Torque limiter
The torque limiter will actuate when a certain torque
level is reached. The motor will disengage from the
output shaft. When this happens, the bit will stop
turning.
CAUTION:
• As soon as the torque limiter actuates, switch off the
machine immediately. This will help prevent prema-
ture wear of the machine.
• Hole saws, core bit, diamond core bit, etc. cannot
be used with this machine. They tend to pinch or
catch easily in the hole. This will cause the torque
limiter to actuate too frequently.
Hammer drilling operation
Position the bit at the location for the hole, then pull
the trigger.
Do not force the machine. Light pressure gives best
results. Keep the machine in position and prevent it
from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the
machine at an idle, then remove the bit partially from
the hole. By repeating this several times, the hole will
be cleaned out and normal drilling may be resumed.
CAUTION:
There is tremendous and sudden twisting force
exerted on the machine/bit at the time of hole break-
through, when the hole becomes clogged with chips
and particles, or when striking reinforcing rods
embedded in the concrete. Always use the side grip
(auxiliary handle) and firmly hold the machine by both
side grip and switch handle during operations. Failure
to do so may result in the loss control of the machine
and potentially severe injury.
Bit grease
Coat the bit shank head beforehand with a small
amount of bit grease (approx. 0.5 – 1 g).
This chuck lubrication assures smooth action and
longer service life.
Drilling in wood or metal (Fig. 7)
Use the optional drill chuck assembly (consisting of
drill chuck and chuck adapter assembly). When
installing it, refer to ''installing or removing drill bit''
described above. You can drill up to 13 mm diameter
in metal and up to 24 mm diameter in wood.
6
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MAINTENANCE

CAUTION:
Always be sure that the machine is switched off and
unplugged before carrying out any work on the
machine.
Replacement of carbon brushes (Fig. 8)
Whenever carbon brushes must be replaced, they cut
out the machine automatically. When this occurs,
replace both carbon brushes at the same time. Use
only identical carbon brushes.
Lubrication (Fig. 9 & 10)
This machine requires no hourly or daily lubrication
because it has a grease-packed lubrication system.
Lubricate the machine every time the carbon brushes
are replaced.
Run the machine for several minutes to warm it up.
Switch off and unplug the machine. Remove the crank
cap using a Makita lock nut wrench (optional acces-
sory). Rest the machine 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 (30 g).
Use only Makita genuine grease (optional accessory).
Filling with more than the specified amount of grease
(approx. 30 g) can cause faulty hammering action or
machine failure. Fill only with the specified amount of
grease. Reinstall the crank cap and tighten with the
lock nut wrench. Do not tighten the crank cap exces-
sively. It is made of resin and is subject to breakage.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by
Makita Authorized Service Center.