English
37
2. How to bore (
Fig. 20
)
(1) Connect the plug to the power source.
(2) A spring is installed in the center pin.
Push it lightly to the wall or the
fl
oor straight.
Connect the core bit tip
fl
ush to the surface and start
operating.
(3) When boring about 5 mm in depth the position of the
hole will be established. Bore after that removing the
center pin and the guide plate from core bit.
CAUTION
○
When removing the center pin and the guide plate,
turn OFF the switch and disconnect the plug from the
receptacle.
○
Application of excessive force will not only expedite
the work, but will deteriorate the tip edge of the drill bit,
resulting in reduced service life of the rotary hammer.
3. Dismounting
(
Fig. 21
)
Remove the core bit shank from the rotary hammer and strike
the head of the core bit shank strongly two or three times with a
hammer holding the core bit, then the thread becomes loose and
the core bit can be removed.
LUBRICATION
This Rotary Hammer is of full air-tight construction to protect against dust and to prevent lubricant
leakage.
Therefore, this Rotary Hammer can be used without lubrication for long periods. Replace the
grease whenever you change the carbon brush to maintain the service life.
Further use of the rotary hammer with lock o
ff
grease will cause the machine to seize up reduce
the service life.
CAUTION
A special grease is used with this machine, therefore, the normal performance of
the machine may be badly a
ff
ected by use of other grease. Please be sure to let
one of our service agents undertake replacement of the grease.
Fig. 20
Core bit
shank
Fig. 21
000Book̲DH24PH2̲ChS.indb 37
000Book̲DH24PH2̲ChS.indb 37
2019/02/12 10:18:10
2019/02/12 10:18:10
