Makita 6924N Gebruiksaanwijzing - Pagina 6

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FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the

tool.

Switch action (Fig. 1)

CAUTION:

• Before plugging in the tool, always check to see that

the switch trigger actuates properly and returns to the

"OFF" position when released.

To start the tool, simply pull the switch trigger. Release the

switch trigger to stop.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Removing the outer and inner sleeves

CAUTION:

• Be careful not to allow foreign matter to enter the

insides of the tool when removing or installing the outer

and inner sleeves.

The outer sleeve M24 and inner sleeve M24 are factory -

installed. If you need other sizes for your work, replace the

sleeves as follows.

Loosen the two screws while holding the outer sleeve.

The outer and inner sleeves will be pushed up by the

springs built into the tool. (Fig. 2)

Press the pin down to remove the inner sleeve from the

outer sleeve. Be careful not to drop the inner sleeve when

removing it. Do not remove the inner sleeve spring, tip rod

and tip rod spring from the tool. (Fig. 3 & Fig. 4)

Installing the outer and inner sleeves

Hold the inner sleeve with the pin facing upward. Place

the outer sleeve over the inner sleeve. Press the pin to

allow inserting the inner sleeve, then release the pin to

secure the inner sleeve. (Fig. 5)

Insert the outer and inner sleeves into the tool while

rotating the inner sleeve alternately clockwise and

counterclockwise until there is no gap between the outer

sleeve and the tool. See the figure. Then tighten the two

screws securely. (Fig. 6)

OPERATION

Bolt installation

Slip the tool onto the bolt so that the inner sleeve

completely covers the bolt tip. (Fig. 7)

CAUTION:

• Be careful when fitting the sleeve onto the bolt tip.

Striking the tip can damage it so that it will no longer fit

inside the sleeve properly.

• First tighten bolts preliminarily by using a hand wrench

and then tighten them with this tool. Use this tool only

after preliminary tightening without starting the

tightening with this tool.

Keep forward pressure on the tool while sliding it further

forward until the outer sleeve fits completely over the nut.

If the tool fails to fit completely over the nut, twist the tool

slightly right and left while pushing forward. (Fig. 8)

Pull the switch trigger. The outer sleeve turns to begin

tightening the nut.

When the specified torque is attained, the bolt tip will be

sheared at its notched portion. The bolt tip will remain

inside the inner sleeve. (Fig. 9)

Release the switch trigger and withdraw the tool in a

straight line. (Fig. 10)

CAUTION:

• Do not force the tool down excessively. Apply the

downward force to the degree just needed to hold the

tool firm.

Pull the tip ejector (tip lever) to eject the bolt tip from the

tool. Catch the sheared bolt tips to prevent them from

falling dangerously below. Keep the tips off of the ground,

floor, walkways, etc. to prevent injury from tripping or

falling. (Fig. 11 & Fig. 12)

CAUTION:

• Washer and nut have head and tail. Head has

identification mark for nut and chamfer for washer.

When placing them, be careful not to place in reverse.

(Fig. 13)

CAUTION:

• Replace nut, bolt and washer all together at one time

when these rotate together, nut rotates excessively or a

bolt protrude from nut surface too much or less.

• Do not reuse used nut, bolt and washer.

• Choose shear bolts according to the thickness of

workpiece to be fastened. Range for the remaining

length of bolts that are obtained after cutting off chips

are determined by bolt size. Refer to the table below for

details.

Bolt size

remaining length

M22

M24

007540

CAUTION:

• Use bolts with the remaining length within the range

shown in the table above as bolts with different size

have different maximum and minimum remaining

length. Be careful not to use bolts beyond the specified

range which causes the tool damage. (Fig. 14)

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or

maintenance.

• Never use gasoline, benzine, thinner, alcohol or the

like. Discoloration, deformation or cracks may result.

Replacing carbon brushes

Remove and check the carbon brushes regularly. Replace

when they wear down to the limit mark. Keep the carbon

brushes clean and free to slip in the holders. Both carbon

Maximum

Minimum

remaining length

26 mm

7 mm

23 mm

10 mm