The proper fastening torq ue may d iffer d epend ing upon
the k ind or siz e of the b olt, the material of the work piece
to b e fastened , etc. The relation b etween fastening
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0
280
( 207)
1
2
M20
M16
M16
M20
M12
M12
N • m
( ft• lb s)
240
( 177)
200
( 148)
160
( 118)
120
( 89)
80
( 59)
40
( 30)
Fastening time ( second )
Fastening torq ue
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0
1
2
3
M12H
M14H
M16H
M12H
M14H
M16H
280
( 207)
240
( 177)
200
( 148)
160
( 118)
120
( 30)
80
( 59)
40
( 89)
N • m
( ft• lb s)
Fastening time ( second )
Fastening torq ue
127(
Hold the tool pointed straight at the b olt or nut.
127(
E xcessive fastening torq ue may d amage the
b olt/nut or impact sock et. Before starting your j ob ,
always perform a test operation to d etermine the
proper fastening time for your b olt or nut.
127(
I f the tool is operated continuously until the b attery
cartrid ge has d ischarged , allow the tool to rest for 15 min-
utes b efore proceed ing with a fresh b attery cartrid ge.
The fastening torq ue is affected b y a wid e variety of
factors includ ing the following. After fastening, always
check the torq ue with a torq ue wrench.
end ) will cause a red uction in the fastening torq ue.
3. Bolt
•
class of b olt are the same, the proper fasten-
ing torq ue will d iffer accord ing to the d iame-
ter of b olt.
•
E ven though the d iameters of b olts are the
same, the proper fastening torq ue will d iffer
of b olt and the b olt length.
4. The use of the universal j oint or the extension
b ar somewhat red uces the fastening force of the
impact wrench. Compensate b y fastening for a
longer period of time.
5. The manner of hold ing the tool or the material
of d riving position to b e fastened will affect the
torq ue.
6. O perating the tool at low speed will cause a red uc-
tion in the fastening torq ue.
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CAUTION:
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NOTICE:
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To maintain prod uct SAFE TY and RE LI ABI LI TY ,
repairs, any other maintenance or ad j ustment should
b e performed b y I N GCO Authoriz ed or Factory Service
Centers, always using I N GCO replacement parts.
1. W hen the b attery cartrid ge is d ischarged almost
completely, voltage will d rop and the fastening
torq ue will b e red uced .
2. I mpact sock et
•
Failure to use the correct siz e impact sock et
will cause a red uction in the fastening torq ue.
•
A worn impact sock et ( wear on the hex end or sq uare
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