Hitachi DV18DCL - 18V 1.5Ah Lithium Ion Hammer Drill Instruction Manual page 16

English
6. How to select tightening torque and rotational speed
Use
Machine screw
Driving
Wood screw
Brick
Drilling
Wood
Metal
CAUTION:
The selection examples shown in Table 5 should
be considered as general standard. As different
types of tightening screws and different materials
to be tightened are used in actual works proper
adjustments are naturally necessary.
When using the hammer drill with a machine
screw at HIGH (high speed), a screw may damage
or a bit may loose due to the tightning torque is
too strong. Use the hammer drill at LOW (low
speed) when using a machine screw.
NOTE:
The use of the battery BCL1415, BCL1430, BCL1815
and EBM1830 in a cold condition (below 0 degree
Centigrade) can sometimes result in the weakened
tightening torque and reduced amount of work.
This, however, is a temporary phenomenon, and
returns to normal when the battery warms up.
16
Table 5
Clutch dial Rotating speed selection (Position of the shift knob)
Position LOW (Low speed)
For 1/4" (6 mm) or
1 – 22
smaller diameter screws.
For 1/4" (6 mm) or
1 – smaller nomi nal
diameter screws.
For 1/2" (13 mm) or
smaller diameters.
For 1-1/4" (32 mm) or
smaller diameters.
(DV14DCL/DV14DVC)
For 1-1/2" (38 mm) or
smaller diameters.
(DV18DCL/DV18DVC)
For drilling with a metal
working drill bit.
7. Mounting and dismounting of the bit
(1) After inserting a driver bit, etc. into the keyless drill
chuck, firmly grasp the ring and tighten the sleeve
by turning it toward the right (in the clockwise
direction as viewed from the front) (See Fig. 10).
If the sleeve becomes loose during operation,
tighten it further. The tightening force becomes
stronger when the sleeve is tightened additionally.
(2) Dismounting the bit
Firmly grasp the ring and loosen the sleeve by
turning it toward the left (in the counter-clockwise
direction as viewed from the front).
Tighten
Ring Sleeve
Fig. 10
HIGH (High speed)
For 1/4" (6 mm) or
smaller diameter screws.
For 5/32" (3.8 mm) or
smaller nominal
diameter screws.
For 21/64" (8 mm) or
smaller diameters.
(DV14DCL/DV14DVC)
For 13/32" (10 mm) or
smaller diameters.
(DV18DCL/DV18DVC)
For 21/64" (18 mm) or
smaller diameters.
(DV14DCL/DV14DVC)
For 7/8" (22 mm) or
smaller diameters.
(DV18DCL/DV18DVC)
Loose