Makita 6920NB User manual

Shear Wrench
Dimensions
(L x W x H)
241 mm x 84 mm x 246 mm
(9-112'' x 3-5/16" x 9-11/16")
249
mm x 84 mm x 252 mm
19-13/16" x 3-5/16" x 9-15/16")
Bolt size Max. torque No load speed
IRPMI
26
Model
6920NB 5/8". 314" 60 kg.m
6922N8 5/13", 34". 7/8" 82 kg,m
(A4901 (434 Ibs,ftl
18
(A4901
1593 Ibs,ft)
MODEL 6920NB
MODEL 6922NB
Net
weight
4.3 kg
(9.5 lbsl
4.8 kg
(10.6 Ibsl
INSTRUCTION MANUAL
DOUBLE
lNSULATlON

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)
WARNING: WHEN USINGELECTRICTOOLS, BASICSAFETY
PRECAUTIONSSHOULD ALWAYS BE FOLLOWEDTO REDUCE
THE
RISK OF FIRE, ELECTRIC SHOCK, AND PERSONAL
INJURY, INCLUDING THE FOLLOWING:
READ ALL INSTRUCTIONS.
1. KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries.
2. CONSIDER WORK AREA ENVIRONMENT. Don't use power tools
in damp
or wet locations. Keep work area well lit. Don't expose power tools to rain.
Don't use tool
in presence of flammable liquids or gases.
3. KEEP CHILDREN AWAY. All visitors should be kept away from work area.
Don't let visitors contact tool or extension cord.
4. STORE IDLE TOOLS. When not in use, tools should be stored in dry, andhigh
or locked-up place
- out of reach of children.
5. DON'T FORCETOOL. It willdo the job betterandsafer at the ratefor which
it was intended.
6. USE RIGHT TOOL. Don't force small tool or attachment to do the job of a
heavy-duty tool. Don't use tool for purpose not intended.
7. DRESS PROPERLY. Don't wear looseclothingorjewelry. They canbecaught
in moving parts. Rubber gloves and non-skid footwear are recommended
when workingoutdoors. Wear protective hair covering tocontain long hair.
8. USE SAFETY GLASSES. Also use face or dust mask if cutting operation is
dusty.
9. DON'T ABUSE CORD. Nevercarry tool by cordor yank it todisconnect from
receptacle. Keep cord from heat, oil, and sharp edges.
10. SECURE WORK. Use clamps or a vise to hold work. It's safer than using
your hand and it frees both hands to operate tool.
11. DON'T OVERREACH. Keep proper footing and balance at all times.
12. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and
safer perform.ance. Follow instructionsfor lubricating and changing acces-
sories. Inspecttoolcordsperiodicallyandifdamaged, haverepaired
by autho-
rized service facility. Inspect extension cords periodically and replace if
damaged. Keep handles dry, clean, and free from oil and grease.
13. DISCONNECTTOOLS. When not
in use, beforeservicing, andwhen chang-
ing accessories, such as blades, bits, cutters.
2

0-25 1 26 - 60
Ampere Rating
More
Not More
Then Then
51 - 100 101 - 150
~
0- 6
6- 10
10 - 12
12 - 16
AWG
18 16 16 14
16
14
Not Recommended
17. OUTDOOR USEEXTENSIONCORDS. When toolis usedoutdoors, use only
18. STAY ALERT. Watch what you are doing, usecommonsense. Don't operate
19. CHECK DAMAGED PARTS. Before further use of the tool, a guard or other
extension cords intended for use outdoors and
so marked.
tool when you are tired.
20.
21.
22.
part that is damaged should be carefully checked todetermine that it will
operate properly and performitsintended function. Check for alignment of
moving parts, binding of moving parts, breakage of parts, mounting, and
any other conditions that may affect its operation. A guard
or other part
that is damaged should be properly repaired or replaced by an authorized
service center unless otherwise indicated elsewhere
in this instruction
manual. Havedefective switches replaced by authorized service center. Don't
use tool
if switch does not turn it on and off.
GUARD AGAINST ELECTRICSHOCK. Prevent body contact
with grounded
surfaces. For example; pipes, radiators, ranges, refrigerator enclosures.
REPLACEMENTPARTS. When servicing, use only identicalreplacement parts.
POLARIZEDPLUGS. To reduce the risk ofelectric shock, this equipment has
a polarized
plug [one blade is wider than the other). This plug will fit in a
polarized outlet only one way. If the
plug does not fit fully in the outlet,
reversethe
plug. If it stilldoes notfit, contacta qualifiedelectriciantoinstall
the proper outlet. Do not change the plug
in any way.
3

VOLTAGE WARNING: Beforeconnecting the tool to a power source (receptacle,
outlet, etc.) be sure the voltage supplied is the same as that specified on the
nameplate of the tool. A power source withvoltage greater than that specified
for the toolcan result
in SERIOUS INJURY to the user - as well as damage to
the tool. If
in doubt, DO NOT PLUG INTHE TOOL. Using a power source with
voltage less than the nameplate rating is harmful to the motor.
,
ADDITIONAL SAFETY RULES
1. Always be sure you maintain good balance and firm footing.
2. Use care and common sense when disposing of sheared bolt tips.
Be sure no one is below when using the tool in high or elevated locations.
Falling tips from high locations or scattered tips can cause severe injury.
SAVE THESE INSTRUCTIONS.
4

Removing or installing the outer and inner sleeves
CAUTION :
*Always be sure that the tool is switched off and unpluggedbefore removingor installing
Be careful not to allow foreign matter to enter the insides of the tool when removing
the outer and inner
sleeves.
or installing the outer and inner sleeves.
The outer sleeve M20 and inner sleeve 3/4" are factory-installed.
Ifyou need other
sizes for your work, replace the sleeves as follows.
Inner sleeve spring
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.
I =- \\
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 rodspring from the tool.
1- Inner sleeve
Hold the inner sleeve with the pin facing
upward.
Place the outer sleeve over the
inner
sleeve. Press the pin to secure the
inner sleeve.
Outer sleeve
in
sleeve
5

Insert the outer and inner sleeves into the toolwhile rotating the inner sleeve alternately
clockwise and counterclockwise until there
is no gap between the outer sleeve and the
tool. See the figure below. Then tighten the two screws securely.
Switchaction
To start
the tool, simply pullthe trigger. Release the trigger to stop.
CAUTION :
Before plugging in the tool, always check to see that the trigger switch actuates proper-
lyand returns to the
“OFF” positionwhen released.
Bolt installation
Slip the tool onto
the bolt so that the inner
sleeve completely covers the bolt tip.
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.
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
pushingforward.
sleeve
Pull the trigger switch. The outer sleeve turns tobegintightening the nut.
6

When the specified torque is attained, the Il
' bolt tip will be sheared at its notched por-
tion. The bolt tip will remain inside the
inner
sleeve.
tion
-
-
Release the trigger and withdraw the tool
in
a straight line.
__Outer sleeve
Press 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.
Bolt tip
7
, , . . . . . . . .
. . .. , . .
.I
I .. ..:..

....
.. ....
Replacingcarbon brushes
Remove and check the carbon brushes
regularly. Replacewhen they wear down to
the limit mark. Keep the carbon brushes
clean and free to slip in
the holders. Both
carbon brushes should be replaced
at the
same time. Use only identical carbon
brushes.
MAINTENANCE
CAUTION :
Always be sure that the tool is switched off and unpluggedbeforeattempting to perform
inspectionor maintenance.
-
Open the protector. Use a screwdriver to
remove the brush holder caps. Take out the
worn carbon brushes, insert the new ones
and secure the brushholder caps.
Brush holder c
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 replacementparts.
8

Fob - 10-'94 US
SHEAR WRENCH
Model 6920NB
Model 6922NB
Note: The switch, noise suppressor and other part configuratlons
may differ from country
10 country
9

MODEL 6920N8. 6922118
ILLM ,& DESCRIPTION
..
F.b-10--'84 US
$.& DESCRlPTlDN
MA
I
2
3
4
5
6
7
8
9
IO
I1
I2
13
14
15
16
17
I0
19
20
21
22
23
24
25
26
21
28
29
30
31
32
33
34
35
36
31
-
"rE
I
1
I
I
I
I
I
1
I
1
4
4
4
I
4
2
4
4
4
4
1
4
I
I
4
I
I
I
I
I
I
I
2
4
I
I
I
-
38
39
40
41
42
43
44
45
46
41
48
49
50
51
52
53
54
55
56
51
58
59
60
61
62
63
G4
65
66
61
68
69
10
11
12
13
14
76
11
70
79
80
81
02
83
-
1
I
4
I
I
I
I
I
I
I
I
I
I
I
I
I
2
1
I
4
4
I
I
1
I
I
1
I
I
I
I
I
I
1
2
2
1
2
I
1
1
1
I
1
I
-
10