Drilling And Driving-In Operations For Anchors; How To Replace Grease - Hitachi Koki DH 45SA Instrucciones De Manejo

Position the end of the bit so makes contact with the
concrete, turn on the switch and perform the warming
up operation. Make sure that a hitting sound is
produced and then use the unit.
CAUTION
When the warming up operation is performed, hold
the side handle and the main unit securely with both
hands to maintain a secure grip and avoid being
turned around by the drill.
DRILLING AND DRIVING-IN OPERATIONS FOR
ANCHORS
Use the optional accessories for anchors, such as anchor
adapter and taper shank adapter.
1. When a rotation striking anchor adapter is used.
(1) Install the self-drilling anchor in the anchor adapter
(Fig. 9).
(2) Turn ON the switch and drill a base hole with the self-
drilling anchor. (Fig. 10)
At the start of the hole-drilling slightly tilt the Rotary
Hammer to determine the hole position.
(3) After cleaning out dust with a syringe, attach the plug
to the anchor tip and drive in the anchor with a manual
hammer.
(4) After driving in the anchor, use the drift key to separate
the anchor. (Fig. 11)
(5) By employing a manual hammer or pliers, snap off
the tapered portion of the anchor. (Fig. 12)
CAUTION
Since the snapped-off tapered portion will fly about,
pay attention to the snapping direction.
2. When a taper shank adapter is used. (Fig. 13)
(1) Install drill bit with taper shank in the taper shank
adapter.
(2) Turn the power on and drill a base hole to the depth
sounded by indicating groove on the drill bit.
(3) After cleaning out dust with a syringe, attach the plug
to the anchor tip and drive in the anchor with a manual
hammer.
(4) To remove the drill bit (taper shank), insert the cotter
into the slot of the taper shank adapter and strike the
head of the cotter with a hammer supporting on a
rest. (Fig. 14)
HOW TO HANDLE A CORE BIT
When a core bit is used, large caliber holes and blind
holes can be drilled. In this case, use optional accessories
for core bits (such as a center pin and core bit shank) for
more rational operation.
1. Mounting
CAUTION
Prior to mounting a core bit, always disconnect the
plug from the receptacle.
(1) Mount the core bit on the core bit shank. (Fig. 15)
Before that, feed oil to the screw portion of core bit
shank for easy dismount.
(2) Mount the core bit shank on the drill main body in the
same manner as in mounting the drill bit and the bull
point. (Fig. 16)
(3) Insert the center pin into the guide plate until it reaches
the extremity.
(4) Fit in the guide plate by aligning its concaved portion
with the core bit tip. When the position of the concave
is shifted by turning the guide plate right or left, the
guide plate never slips off even when the drill is used
in a downward direction. (Fig. 17)
2. Drilling holes
(1) Insert the plug into a receptacle.
(2) A spring is built in the center pin. By straightly and
gently pressing it to the wall or floor surface, the entire
surface of the core bit tip attains contact to start the
hole drilling job. (Fig. 18)
(3) When the hole depth reaches approximately 5 mm,
the hole position can be determined. Then remove
the center pin and guide plate from the core bit and
continue the hole drilling job.
CAUTION
When removing the center pin and guide plate, always
disconnect the plug from the receptacle.
3. How to dismount the core bit
(1) By holding the drill (with the core bit inserted) in an
upward position, drive the drill to repeat impact
operation two or three times, whereby the screw is
loosened and the drill becomes ready for disassembly.
(Fig. 19)
(2) Remove the core bit shank from the drill, hold the core
bit with one hand, and strongly strike the head of the
hexagonal portion of the core bit shank with a hand
hammer two or three times, whereby the round head
screw is loosened and the drill is ready for
disassembly. (Fig. 20)

HOW TO REPLACE GREASE

This machine is of full air-tight construction to protect
against dust and to prevent lubricant leakage. Therefore,
the machine can be used without lubrication for long
periods. Replace the grease as described below.
1. Grease replacement period
After purchase, replace grease after every 6 months
of usage. Ask for grease replacement at the nearest
authorized Hitachi Service Agent. Proceed for
replacement of grease.
2. Grease replacement
CAUTION
Before replacing the grease, turn the power off and
pull out the power plug.
(1) Remove the crank case cover and wipe off the grease
inside. (Fig. 21)
(2) Supply 20g of Hitachi Electric Hammer Grease A
(Standard accessory, contained in tube) to the crank
case.
As the tube contain 30g of grease, supply 2/3 of the
contained grease.
(3) After replacing the grease, install the crank case cover
securely.
NOTE
The Hitachi Electric Hammer Grease A is of the low
viscosity type. If necessary purchase from an
authorized Hitachi Service Agent.
English
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