Makita 6917D User Manual download pdf (Page 12)

OPERATION

The proper fastening torque may differ depending upon the

kind or size of the bolt, the material of the workpiece to be

fastened, etc. The relation between fastening torque and fas-

tening time is shown in the figures.

Hold the tool firmly and place the socket over the bolt or nut.

Turn the tool on and fasten for the proper fastening time.

NOTE:

• Never use the tool to tighten bolts or nuts for a fastening

torque greater than the tool-fastening capacity. Such

usage may result in damage of the anvil. This tool is

intended for assembly and disassembly automotive

components and is provided with 9.5 mm (3/8”) anvil.

• When fastening screw M8 (5/16”) or smaller, carefully

adjust pressure on the switch trigger so that the screw is

not damaged.

• Hold the tool pointed straight at the bolt or nut.

• Excessive fastening torque may damage the bolt/nut or

socket. Before starting your job, always perform a test

operation to determine the proper fastening time for your

bolt or nut. Especially for the bolt smaller than M8 (5/

16”), perform the above test operation to prevent the

trouble on socket or bolt, etc.

• 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.

The fastening torque is affected 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 com-

pletely, voltage will drop and the fastening torque will be

reduced.

2. Socket

• Failure to use the correct size socket will cause a

reduction in the fastening torque.

• A worn socket ( wear on the hex end or square end )

will cause a reduction in the fastening torque.

N m

100

0 1.0 2.0

3.0

(S)

M14

M12

M10

M12

M14

Fastening torque

Fastening time

Proper fastening torque

(ft lbs)

(72)

(58)

(43)

(29)

(14)

(9/16")

(1/2")

(3/8")

Standard bolt

002359

N.m

(ft.lbs)

(58)

100

(72)

120

(87)

(43)

(29)

(14)

0 1.0 2.0

3.0 4.0 5.0

(S)

M8 (5/16”)

M10 (3/8”)

M8 (5/16”)

Fastening time

Fastening torque

Proper fastening torque

High tensile bolt

003921

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Comments to this Manuals

No comments

Makita 6917D User Manual Page 12

Comments to this Manuals

Related products and manuals for Power impact wrenches Makita 6917D