Tohnichi TW750N2 Manuale utente
OPERATING INSTRUCTION
To use this product properly and safely, please read this manual carefully before use. If you have
any question about the product and its operations, please contact your nearest distributor or
TOHNICHI MFG. CO., LTD.
TW750N2/TW1000N2 TW750N2/TW1000N2 Model
SPECIALIZED TORQUE WRENCH
FOR LARGE SIZE WHEEL NUT
MODEL TW750N2/TW1000N2
1
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
To customers: Before using this product, please read this operating instruction carefully to use it
properly. If you have any question, please contact your nearest distributor or TOH ICHI MFG.
CO., LTD. This operating instruction should be stored in a safe place.
Safety Precautions
Safety Symbol
This symbol is used for drawing attention to "safety precautions". If you see this symbol
in this operating instruction, attention should be paid to safety. Take preventative
actions according to the description and conduct "safe operations and proper control".
Signal Words
The signal words are the headers which indicate the level of hazard that should be known for
human safety in handling devices. The signal words for safety are "Danger", "Warning" and
"Caution" depending on the level of hazard to human. The signal words are used with the safety
symbol to indicate the following situations.
" Danger": Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
" Warning": Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
" Caution": Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
• Do not use it for any other purpose than tightening bolts.
This product is the torque wrench specialized in tightening wheel nuts of large vehicles (truck,
bus, etc).
• Do not use it for loosening the bolt.
Loosening torque may apply excessive torque and cause accidents or injuries.
• Check the handle does not have any oil or grease on it.
It may cause your hand to slip and cause injuries.
• Check for crack, scratch, rust on the product.
The damage on the product may cause accidents and injuries. Conduct check and repair.
• Do not use pipe, etc, to lengthen the handle.
It may cause the torque wrench to break and the accuracy cannot be maintained.
Warning
Potential danger which may cause serious consequences
• Pay attention to the "ONL " arrow mark.
The torque wrench operates only when applying torque in the direction shown on the arrow.
If you apply torque on the wrong direction, the torque wrench itself may break down and it
could lead to acceidents and injuries.
• Stop tightening upon "click" sound.
If you keep applying torque, it will be over-torque.
• Do not use mementum or your weight, when applying torque.
It may cause the wrench to slip and come off the bolt, which may lead to accidents and injuries.
• Do not apply torque over specified maximum value.
It may break itself and cause accidents and injuries.
• Use sockets that match the bolt and nut.
If sockets and bolt/nut are incompatible shape, it cause accidents and injuries.
• Do not use a defected product such as one without pins or graduation, etc.
Make sure to contact the shop of your purchase or TOH ICHI and ask for check-up and
repair.
• Do not try to modify the product.
It may affect robustness and cause accuracy failure.
Caution
Potential danger that poses hinderance but not serious consequences
3
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
• Do not use any other parts for repair than those specified by TOHNICHI.
To repair the torque wrench, contact your nearest distributor or TOH ICHI and use parts
specified by TOH ICHI only.
• Make sure to set torque value before use.
Torque is set to the minimum value at default.
• Do not use it at the torque out of its specified torque range.
• Do not use it in the rain or in water.
This product is OT water-resistant. Take measures so water don’t come inside the product.
• Conduct calibration and daily inspection.
Calibration and daily inspection is required. For calibration, contact your nearest distributor or
TOH ICHI.
• When working in a narrow space, watch out for your hand and elbow.
When operating the torque wrench, be careful not to hit your hand and elbow against
surroundings.
• Do not apply oil inside the torque wrench.
It may cause the output torque to be excessive.
• Do not use it on unpaved ground (gravel, mud, etc).
Output torque may be unstable, and may degrade product durability, or cause injuries.
• After use, make sure to remove all the dirt such as dust, mud, oil, etc before storage.
If you store it with dirt on, it may cause operation and accuracy failure.
• If you don't use it for a long time, set it to the lowest torque value. Apply some anti-rust
oil and store it in a dry place.
Storing in wrong conditions may degrade the product durability and accuracy.
Attention on Safety
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
Safety Precautions ............................................................... 2
1. Main Body Assembling Procedures.............................. 5
2. Components and Name of Each Part ........................... 6
3. Preparation before Use.................................................. 7
4. How to Use..................................................................... 8
Contents
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
5
1. Check all the necessary parts are included in the package.
1
Main Body Assembling Procedures
Clip remover….1pc
Part#149
Head…1pc
Caster…1pc
Frame…1pc
Pin (large) 2pc
Part# 02T75177
Pin (small)…2pc
Part# 03T75177
Clip … 10pc (2pc for spare)
Part# S/1301C
2. Put the caster on the frame.
Push the clip into the hole of the
pin (small) (2 places).
Using the edge of the clip remover,
push the clip into the hole.
Caster
Frame
Pin (small)
Clip
Pin (small)
Intert the pin (small)
into the 3rd and 4th
holes from the top
of the frame.
3. Combine the head into the frame.
Insert the clip into the
hole of the pin (large)
(2 places).
Using the edge of the
clip remover, push in
the clip into the hole.
Grip
Head
The grip side
should be in
line with the
frame side.
frame
Set the head into
the frame and
insert the pin
(large) into the
1st and 2nd hole
of the frame. Pin (large)
Grip
4. Move the product up and down and check the pin and the clip are securely set.
Push down the head
toward the arrow direction.
Caution
Make sure the grip of the head is facing the frame side (two-wheel side).
If you put it on the wrong direction, it does not operate properly.
* For disassembling procedure, refer to Chapter 2 and 3.
To remove clips, use the clip remover included in the
package.
* For calibration, contact TOH ICHI.
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
2
Components and Name of Each Part
TW750N2/1000N2 torque wrench
Head
Input drive
Grip
Output shaft
Package contents
oTW750N2/1000N2 main body
(refer to the assembling procedures)
oTW750N2/1000N2 torque wrench
oOperating instruction
Hand force line
TW750N2/1000N2 main body
TW750N2/1000N2 dimensional drawing
Output shaft length
486
Total width of main body
460
374 374
Squaredrive
ofoutput25.4
Torquewrench
operatingangle
range105°
Total height of the main
body 937 (max)
55°
(TW1000N2)
Total height of the main
body 378 (minimum)
1145
Height range of nut to tighten: about 255mm - 790mm from the ground
TW750N2/1000N2 tightening height range
* Specifications are
subject to change
without prior notice.
Minimum height of
nut to tighten
about 255
Max height of
nut to tighten
about 790
65°
(TW750N2)
Caution
TW750 2/1000 2 main body and the torque
wrench are calibrated as one set.
If you combine the body and the torque wrench
of different serial number, you may not get the
accurate torque result.
7
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
3
Preparation before Use
Put on the sockets on both sides of the output shaft.
* Socket is not included in the set. Choose a socket that matches the bolt and nut.
Output shaft drive size: o25.4mm
Output shaft
Socket
Caution
Socket also prevents the output shaft from coming off the head.
If you don't put sockets on, or put only one socket on, the output shaft may come off the head and drop
to the ground. It may cause injuries.
Make sure to put O-ring and pin on the socket to prevent it from coming off the output shaft accidentaly.
Check the serial number on TW750N2/1000N2 main body and the serial number on the
torque wrench are the same.
Serial number of TW750N2/1000N2
main body is printed here.
* Example of serial number:
123456A (6 digit number + 1 alphabet)
Serial number of the torque
wrench is printed here.
* Serial number is printed on
both sides of the wrench.
Caution
TW is calibrated as one set (mainbody +
torque wrench).
If you use the main body or the torque
wrench of different serial number, it may
not be able to output accurate torque.
8
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
4
How to Use
• Set the torque value.
Set the torque value on the graduation of the torque wrench.
The value on the graduation is multiplied value by the gear ratio. Therefore, the torque value
on the graduation should be the same as the value you wish to apply on the bolt.
You do not need to multiply the torque value by the gear ratio of the main body.
1. Loosen the locker.
2. Rotate the sub graduation and set the torque value (main graduation + sub graduation).
3. Lock the locker (clockwise).
(If the locker is hindered by the pin, relocate the pin to the appropriate position.)
Sub graduation
Locker
Red dot
Torque value
increase
Main graduation
Graduation datum line
Graduation line Sub graduation
Torque value
decrease
Pin
Lock
Unlock
* Check the tightening direction.
Attached sticker indicates the tightening direction.
Output shaft
Gas damper
Tightening direction sticker
• Set TW750N2/1000N2 main body to the bolt and the nut.
To set the position of TW750 2/1000 2 main body, vertical position (height) can be adjusted
by the gas damper and horizontal position by sliding the shaft.
Example) Set torque value to 550 ·m.
1. See the main graduation while
rotating the sub graduation. When
it comes close to 500 ·m on the
main graduation, check the value
on the sub graduation. Align 0 of
the sub graduation to the red dot.
ow, the torque wrench is set to
500 ·m.
2. See the sub graduation and rotate
it clockwise until 50 is aligned to
the red dot. ow, the torque
wrench is set to 550 ·m.
9
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SPECIALIZED TORQUE WRE CH FOR LARGE SIZE WHEEL UT MODEL
TW750N2/TW1000N2
When tightening CCW screw
(counter-clockwise screw)
* Counter-clockwise screw is used in JIS hubs.
"LEFT" is printed on the
tube of the torque wrench.
When tightening CW screw
(clockwise screw)
"RIGHT" is printed on the
tube of the torque wrench.
Left Right
• Set the torque wrench on TW750N2/1000N2 main body.
Input drive
Set the head of the torque wrench to the input drive.
The pin on input drive and cut part of the head are to be aligned.
Caution
Insert the head of the torque wrench fully and
securely to the input drive.
If the head is not fully inserted, the main body and
the torque wrench may be damaged, which
causes accidents and injuries.
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1
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