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TROUBLESHOOTING
Before asking for repairs, conduct your own inspection first. If you find a problem that is not explained in the manual,
do not attempt to dismantle the tool. Instead, ask Makita Authorized Service Centers, always using Makita replace-
ment parts for repairs.
State of abnormality
Punch piston will not come out.
Although punch piston comes out,
cutting power is too weak to hole
punching.
Oil leaks.
Motor does not move.
Poor motor rotation.
CAUTION:
The internal components of the pump have very close clearances and are sensitive to
damage from dust, dirt, contamination of the hydraulic fluid or improper handling. The disassembly of the
pump housing requires special tools and training, and should only be attempted by repair personnel who
have been properly trained and have the proper equipment. The improper servicing of electrical compo-
nents can lead to conditions that could cause serious injury. The pump and piston components and all
electrical components should be serviced only by authorized repair shop, dealer or distributor.
NOTICE:
Any attempt by unauthorized personnel to service the internal components of the pump area
will void the warranty.
Probable cause (malfunction)
Oil is insufficient
Punch piston has not returned com-
pletely due to rebar chips, iron powder
and dirt in the sliding portion of punch
piston and C frame.
Punch piston has not returned com-
pletely due to the distortion or swelling
of punch piston.
Punch piston has not returned com-
pletely due to weak return spring.
Oil is insufficient.
Contact between cylinder and release
valve is improper. There may be
scratches at chimney of cylinder or iron
powder or dirt are sticking there.
Breakage of release valve.
Improper clearance between cylinder
and piston.
Improper contact between cylinder and
check valve.
Breakage of urethane packing of
cylinder.
Scratches on or breakage of oil leveler
sack.
Scratches at sliding portion of C frame
and punch piston and at back-up ring.
Breakage of O-ring at joint of C frame
and cylinder.
Breakage of liner at joint of cylinder and
pump case.
Insufficient tightening of bolts at respec-
tive parts.
Insufficient charge of battery cartridge.
Battery life cycle worn off.
Breakage of motor by overheating.
Deformation or breakage of bearings
and gear connected to the motor.
15 ENGLISH
Remedy
Refill oil.
Push back punch piston.
Clean punch piston.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Refill oil.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
Tighten bolts.
Charge battery cartridge.
Replace battery cartridge.
Ask your local authorized service center for repair.
Ask your local authorized service center for repair.
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