Makita DTWA070 Manual De Instrucciones página 13

Fig.17
T h e proper f astening tor q ue ma y d i f f er d epen d ing upon
t h e kin d or si z e o f t h e bolt, t h e material o f t h e w orkpie c e
to be f astene d , et c .
NOTICE:
W h en f astening small bolts, c are f ull y
adjust pressure on the switch trigger so that the bolt
is not d amage d .
NOTICE:
H ol d t h e tool pointe d straig h t at t h e bolt
or nut.
NOTICE:
E x c essi v e f astening tor q ue ma y d amage
t h e bolt / nut or impa c t so c ket. Be f ore starting y our
job, always perform a test operation to determine the
proper f astening time f or y our bolt or nut.
T h e f astening tor q ue is a f f e c te d b y a w i d e v ariet y o f
f a c tors in c lu d ing t h e f ollo w ing. A f ter f astening, al w a y s
c h e c k t h e tor q ue w it h a tor q ue w ren c h .
1 . W h en t h e batter y c artri d ge is d is c h arge d almost
c ompletel y , v oltage w ill d rop an d t h e f astening
tor q ue w ill be re d u c e d .
2. I mpa c t so c ket
• F ailure to use t h e c orre c t si z e impa c t so c ket
w ill c ause a re d u c tion in t h e f astening tor q ue.
• A w orn impa c t so c ket ( w ear on t h e h e x en d
or s q uare en d ) w ill c ause a re d u c tion in t h e
f astening tor q ue.
3. Bolt
Even though the torque coefficient and the
c lass o f bolt are t h e same, t h e proper f asten-
ing tor q ue w ill d i f f er a c c or d ing to t h e d iame-
ter o f bolt.
• E v en t h oug h t h e d iameters o f bolts are t h e
same, t h e proper f astening tor q ue w ill d i f f er
according to the torque coefficient, the class
o f bolt an d t h e bolt lengt h .
. The use of the universal joint or the extension
bar some w h at re d u c es t h e f astening f or c e o f t h e
impa c t w ren c h . C ompensate b y f astening f or a
longer perio d o f time.
5 . T h e manner o f h ol d ing t h e tool or t h e material
o f d ri v ing position to be f astene d w ill a f f e c t t h e
tor q ue.
6 . O perating t h e tool at lo w spee d w ill c ause a re d u c -
tion in t h e f astening tor q ue.
13 ENGLISH