Maintenance - Makita HR2430 Instruction Manual

Drilling with dust extractor attachment (Fig. 13)
In drilling operation, hold the tool so that the top end of
the dust extractor attachment is always kept in complete
contact with the surface of concrete.
Note:
Any space between them would result in a considerable
loss of dust extracting power.
Cleaning out dust bag (Fig. 14)
Remove the dust bag from the tool.
Pull the fastener out of the dust bag, and then remove
dust or particles to clean out the dust bag.
Note:
Too much dust in the dust bag would result in a consider-
able loss of dust extracting power.
Accordingly, clean out the dust bag from time to time.
Drilling without dust extractor attachment
(Fig. 15)
This tool can be also used as a standard rotary hammer
without the dust extractor attachment and the dust bag.
Before drilling operation without the dust extractor attach-
ment and the dust bag, plug the hose port with the cap
provided.
The cap reduces the exhaust air from the dust exhaust
port for your comfortable operation.
Hammer drilling operation
Position the bit at the desired location for the hole, then
pull the trigger.
Do not force the tool. Light pressure gives best results.
Keep the tool 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 tool 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 tool/bit at the time of hole breakthrough, 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 tool by both side grip and switch handle during
operations. Failure to do so may result in the loss of con-
trol of the tool and potentially severe injury.
Blow-out bulb (Fig. 16)
Use the blow-out bulb to clean out the hole.
Drilling in wood or metal (Fig. 17)
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 on the
previous page. Set the action mode changing knob to
"rotation only". You can drill up to 13 mm diameter in
metal and up to 32 mm diameter in wood.
CAUTION:
Never use "rotation with hammering" when the drill chuck
assembly is installed on the tool. The drill chuck assem-
bly may be damaged.
NOTE:
If you need to assemble the drill chuck and chuck
adapter assembly, proceed as follows.
Secure the drill chuck in a vise or similar securing devise.
Place the chuck key in one of the three holes so that the
chuck body will not turn. (Fig. 18)
Remove the screw from the chuck adapter assembly and
screw the chuck adapter into the drill chuck. Use a
wrench to tighten the chuck adapter securely, applying
about 29 – 39 N·m torque. (Note: you can obtain 29 – 39
N·m torque by applying pressure of 30 – 40 kg to the
wrench while holding the portion 10 cm from the wrench
head.)
Open the chuck jaws fully and insert the screw through
the chuck opening. Tighten the screw counterclockwise
with a screwdriver. (Fig. 19)

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
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 Plus tungsten-carbide tipped bit
• Drill chuck S13
• Chuck adapter
• Chuck key S13
• Bit grease (100 g)
• Plastic carrying case
• Blow-out bulb
• Cap
• Safety goggles
• Depth gauge
7