User Manual

12 ENGLISH
Proper fastening torque for standard bolt
0
(2447)
(2039)
(1631)
(1223)
(815)
(407)
240
200
160
120
80
40
2
(kgf•cm)
N•m
1
2
1
M20
M16
M16
M20
M12
M12
1. Fastening time (second) 2. Fastening torque
Proper fastening torque for high tensile bolt
(kgf•cm)
N•m
0
23
1
M12
M14
M16
M12
M14
M16
1
2
(2855)
280
(2447)
(2039)
(1631)
(1223)
(815)
(407)
240
200
160
120
80
40
1. Fastening time (second) 2. Fastening torque
NOTE: Hold the tool pointed straight at the bolt or nut.
NOTE:Excessivefasteningtorquemaydamagethe
bolt/nutorimpactsocket.Beforestartingyourjob,
alwaysperformatestoperationtodeterminethe
properfasteningtimeforyourboltornut.
NOTE:Ifthetoolisoperatedcontinuouslyuntilthe
batterycartridgehasdischarged,allowthetooltorest
for15minutesbeforeproceedingwithafreshbattery
cartridge.
Thefasteningtorqueisa󰀨ectedbyawidevarietyof
factorsincludingthefollowing.Afterfastening,always
check the torque with a torque wrench.
1. Whenthebatterycartridgeisdischargedalmost
completely,voltagewilldropandthefastening
torque will be reduced.
2. Impact socket
• Failure to use the correct size impact socket
will cause a reduction in the fastening torque.
• A worn impact socket (wear on the hex end
or square end) will cause a reduction in the
fastening torque.
3. Bolt
• Eventhoughthetorquecoe󰀩cientandthe
class of bolt are the same, the proper fasten-
ingtorquewilldi󰀨eraccordingtothediame-
ter of bolt.
• Even though the diameters of bolts are the
same,theproperfasteningtorquewilldi󰀨er
accordingtothetorquecoe󰀩cient,theclass
of bolt and the bolt length.
4. Theuseoftheuniversaljointortheextension
bar somewhat reduces the fastening force of the
impactwrench.Compensatebyfasteningfora
longer period of time.
5. The manner of holding the tool or the material
ofdrivingpositiontobefastenedwilla󰀨ectthe
torque.
6. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
MAINTENANCE
CAUTION: Always be sure that the tool is
switched o󰀨 and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs,anyothermaintenanceoradjustmentshould
beperformedbyMakitaAuthorizedorFactoryService
Centers,alwaysusingMakitareplacementparts.
OPTIONAL
ACCESSORIES
CAUTION: These accessories or attachments
are recommended for use with your Makita tool
specied in this manual.Theuseofanyother
accessories or attachments might present a risk of
injurytopersons.Onlyuseaccessoryorattachment
for its stated purpose.
Ifyouneedanyassistanceformoredetailsregard-
ingtheseaccessories,askyourlocalMakitaService
Center.
• Impact socket
• Extension bar
• Universaljoint
• Socket bit adapter
• Tool hanger
• Makitagenuinebatteryandcharger
NOTE:Someitemsinthelistmaybeincludedinthe
toolpackageasstandardaccessories.Theymay
di󰀨erfromcountrytocountry.