Makita 6922NB User manual

1
ENGLISH (Original instructions)
INSTRUCTION MANUAL
DOUBLE INSULATION
IMPORTANT: Read Before Using.
Shear Wrench
6922NB
004982

2
ENGLISH (Original instructions)
SPECIFICATIONS
Model 6922NB
Bolt size M16, M20, M22
Max. normal torque 803.6 N•m
No load speed (min-1) 20
Dimensions (L×W×H) 249 mm×84 mm×252 mm
Net weight 4.8 kg
Safety class /II
• Due to our continuing programme of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
END201-5
Symbols
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
･Read instruction manual.
･DOUBLE INSULATION
･Only for EU countries
Do not dispose of electric equipment
together with household waste material!
In observance of European Directive
2002/96/EC on waste electric and
electronic equipment and its
implementation in accordance with
national law, electric equipment that
have reached the end of their life must
be collected separately and returned to
an environmentally compatible recycling
facility.
ENE038-1
Intended use
The tool is intended for fastening “tor-shear type” high
tensile bolts.
ENF002-2
Power supply
The tool should be connected only to a power supply of
the same voltage as indicated on the nameplate, and can
only be operated on single-phase AC supply. They are
double-insulated and can, therefore, also be used from
sockets without earth wire.
GEA005-3
General Power Tool Safety
Warnings
WARNING Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and
instructions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
2. Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
Electrical safety
4. Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will
reduce risk of electric shock.
5. Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of
electric shock if your body is earthed or grounded.
6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
7. Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords
increase the risk of electric shock.
8. When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.

3
9. If operating a power tool in a damp location is
unavoidable, use a residual current device
(RCD) protected supply. Use of an RCD reduces
the risk of electric shock.
10. Use of power supply via a RCD with a rated
residual current of 30mA or less is always
recommended.
Personal safety
11. Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired or
under the influence of drugs, alcohol or
medication. A moment of inattention while
operating power tools may result in serious
personal injury.
12. Use personal protective equipment. Always
wear eye protection. Protective equipment such
as dust mask, non-skid safety shoes, hard hat, or
hearing protection used for appropriate conditions
will reduce personal injuries.
13. Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools with
your finger on the switch or energising power tools
that have the switch on invites accidents.
14. Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may
result in personal injury.
15. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
16. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes,
jewellery or long hair can be caught in moving
parts.
17. If devices are provided for the connection of
dust extraction and collection facilities,
ensure these are connected and properly used.
Use of dust collection can reduce dust-related
hazards.
Power tool use and care
18. Do not force the power tool. Use the correct
power tool for your application. The correct
power tool will do the job better and safer at the
rate for which it was designed.
19. Do not use the power tool if the switch does
not turn it on and off. Any power tool that cannot
be controlled with the switch is dangerous and
must be repaired.
20. Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
21. Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are
dangerous in the hands of untrained users.
22. Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may affect the
power tool’s operation. If damaged, have the
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
23. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
24. Use the power tool, accessories and tool bits
etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of the power
tool for operations different from those intended
could result in a hazardous situation.
Service
25. Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
26. Follow instruction for lubricating and
changing accessories.
27. Keep handles dry, clean and free from oil and
grease.
GEB006-6
SHEAR WRENCH SAFETY
RULES
1. Hold power tool by insulated gripping
surfaces, when performing an operation
where the fastener may contact hidden wiring
or its own cord.Fasteners contacting a "live" wire
may make exposed metal parts of the power tool
"live" and could give the operator an electric
shock.
2. Always be sure you maintain good balance
and firm footing.
Be sure no one is below when using the tool in
high or elevated locations.
3. Hold the tool firmly.
4. Use care and common sense when disposing
of sheared bolt tips. Falling tips from high
locations or scattered tips can cause severe
injury.
SAVE THESE INSTRUCTIONS.

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WARNING:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to shear wrench safety rules for the subject product.
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
the tool.
Switch action
1
004983
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
1
2
004984
CAUTION:
• Be careful not to allow foreign matter to enter the
insides of the tool when removing or installing the
outer and inner sleeves.
If you need, for your work, different sizes of outer sleeve
and inner sleeve from those installed on your tool,
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.
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.
1
2
3
004985
1
2
3
004986
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.
1
2
3
004987
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.
1. Outer sleeve
2. Pin
3. Inner sleeve
1. Tip rod
2. Tip rod spring
3. Inner sleeve
spring
1. Inner sleeve
2. Pin
3. Outer sleeve
1. Outer sleeve
2. Screw
1. Switch trigger

5
1
2
3
004988
OPERATION
Bolt installation
Slip the tool onto the bolt so that the inner sleeve
completely covers the bolt tip.
1
2
004989
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.
1
2
004990
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.
1
2
004991
Release the switch trigger and withdraw the tool in a
straight line.
1
004992
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.
1. Outer sleeve
1. Notched portion
2. Bolt tip
1. Outer sleeve
2. Nut
1. Inner sleeve
2. Bolt tip
1. There should be
no gap between
the outer sleeve
and the tool.
2. Outer sleeve
3. Screw

6
1
004993
1
004994
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.
1
23
4
5
005848
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
M16
M20
Maximum
remainig
length
Minimum
remainig
length
20mm 4.5mm
15mm 5.5mm
M22 14mm 7mm
007586
1
007539
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
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
1
001145
1. Limit mark
1. Remaining
length
1. Identification
mark
2. Nut
3. Bolt
4. Chamfered
5. Washer
1. Tip ejector (Tip
lever)
1. Bolt tip

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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 brushes should be replaced at the same
time. Use only identical carbon brushes.
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 brush holder caps.
1
2
3
004995
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are
recommended for use with your Makita tool
specified 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 regarding
these accessories, ask your local Makita Service Center.
Sleeve
Outer sleeve
Inner sleeve
Outer sleeve
Inner sleeve
Outer sleeve
Inner sleeve
Outer sleeve
Inner sleeve
Outer sleeve
Inner sleeve
Outer sleeve
Inner sleeve
Outer sleeve
Inner sleeve
Boltsize
M16
M16
M20
M20
M22
M22
M22
M22
5/8"
5/8"
3/4"
3/4"
3/4"
3/4"
Lengh (mm)
35
36
37
38
39
85
85
35
36
37
38
83
84
39
006668
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ
from country to country.
1. Screwdriver
2. Brush holder cap
3. Protector

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Makita Corporation
www.makita.com
883878B4