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CAUTION
⅜ When the battery charger has been continuosly used,
the battery charger will be heated, thus constituting
the cause of the failures. Once the charging has been
completed, give 15 minutes rest until the next
charging.
⅜ If the battery is recharged when it is warm due to
battery use or exposure to sunlight, the pilot lamp
map light in green.
The battery will not be recharged. In such a case, let
the battery cool before charging.
⅜ When the pilot lamp flickers in red (at 0.2-second
intervals), check for and take out any foreign objects
in the charger’s battery installation hole. If there are
no foreign objects, it is probable that the battery or
charger is malfunctioning. Take it to your authorized
Service Center.
PRIOR TO OPERATION
1. Preparing and checking the work environment
Make sure that the work site meets all the conditions
laid forth in the precautions.
2. Checking the battery
Make sure that the battery is installed firmly. If it is at
all loose it could come off and cause an accident.
3. Installing the bit (WH14DSDL / WH18DSDL)
Always follow the following procedure to install driver
bit. (Fig. 5)
(1) Pull the guide sleeve away from front of the tool.
(2) Insert the bit into the hexagonal hole in the anvil.
(3) Release the guide sleeve and it returns to its original
position.
CAUTION
If the guide sleeve does not return to its original
position, then the bit is not installed properly.
4. Selecting the socket matched to the bolt
(WR14DSDL / WR18DSDL)
Be sure to use a socket which is matched to the bolt
to be tightened. Using an improper socket will not
only result in insufficient tightening but also in
damage to the socket or nut.
A worn or deformed hex. or square-holed socket will
not give an adequate tightness for fitting to the nut or
anvil, consequently resulting in loss of tightening
torque.
Pay attention to wear of socket hole, and replace
before further wear has developed.
5. Installing a socket (WR14DSDL / WR18DSDL)
ⅷ Plunger type (Fig.6)
Align the plunger located in the square part of the
anvil with the hole in the hex. socket. Then push the
plunger, and mount the hex. socket on the anvil.
Check that the plunger is fully engaged in the hole.
When removing the socket, reverse the sequence.
CAUTION
⅜ Please use the designated attachments which are
listed in the operations manual and Hitachi’s catalog.
Accidents or injuries could result from not doing so.
⅜ Make sure to firmly install the socket in the anvil. If
the socket is not firmly installed it might come out
and cause injuries.
HOW TO USE
1. Check the rotational direction
The bit rotates clockwise (viewed from the rear side)
by pushing the R-side of the push button.
The L-side of the push button is pushed to turn the bit
counterclockwise. (See Fig. 7) (The
L
and
R
marks
are provided on the body.)
CAUTION
The push button cannot be switched while the impact
driver is turning. To switch the push button, stop the
impact driver, then set the push button.
2. Switch operation
⅜ When the trigger switch is depressed, the tool rotates.
When the trigger is released, the tool stops.
⅜ The rotational speed can be controlled by varying the
amount that the trigger switch is pulled. Speed is low
when the trigger switch is pulled slightly and increases
as the trigger switch is pulled more.
NOTE
A buzzing noise is produced when the motor is about
to rotate. This is only a noise, not a machine failure.
3. Change rotation speed
As shown in Fig. 8, when the rotation switch-over
lever is slid to the lower side, the power mode (P) is
set. And when slid to upper side, the save mode (S) is
set.
Please use the save mode (S) when you want to lower
Maximum tightening torque.
CAUTION
In the work of the save mode (S), avoid the continuous
screw-tightening as temperature of electronic
components of the converter switch increases.
4. Tightening and loosening screws (WH14DSDL /
WH18DSDL)
Install the bit that matches the screw, line up the bit in
the grooves of the head of the screw, then tighten it.
Push the impact driver just enough to keep the bit
fitting the head of the screw.
CAUTION
Applying the impact driver for too long tightens the
screw too much and can break it.
Tightening a screw with the impact driver at an angle
to that screw can damage the head of the screw and
the proper force will not be transmitted to the screw.
Tighten with this impact driver lined up straight with
the screw.
5. Tightening and loosening bolts
A hex. socket matching the bolt or nut must first be
selected. Then mount the socket on the anvil, and
grip the nut to be tightened with the hex. socket.
Holding the wrench in line with the bolt, press the
power switch to impact the nut for several seconds.
If the nut is only loosely fitted to the bolt, the bolt
may turn with the nut, therefore mistaking proper
tightening. In this case, stop impact on the nut and
hold the bolt head with a wrench before restarting
impact, or manually tighten the bolt and nut to prevent
them slipping.
6. Using the hook
The hook is used to hang up the power tool to your
waist belt while working.
CAUTION
⅜ When using the hook, hang up the power tool firmly
not to drop accidentally.
If the power tool is dropped, it may lead to an accident.
01Eng_WH14DSDL_WE 8/7/12, 1:18 PM11