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1/2”SQ DRIVE TORQUE WRENCH 

MICROMETER STYLE 60-340NM - 

CALIBRATED

MODEL NO: 

STW704

Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these 

instructions, and properly maintained, give you years of trouble free performance.

IMPORTANT:

 PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE 

THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR 
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

1.  SAFETY

 

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   Ensure all workshop safety rules, regulations, and conditions are complied with when using torque wrench.

 

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   Maintain the wrench in good condition and replace any damaged or worn parts. Use genuine parts only. Unauthorised parts may be  

  dangerous and will invalidate the warranty.

 

9

   The wrench is a precision tool, 

DO NOT

 abuse it. 

DO NOT

 drop or throw the wrench.

 

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   Maintain correct balance and footing. Ensure the floor is not slippery and wear non-slip shoes.

 

‰

  

WARNING!

 

DO NOT

 use the wrench if damaged or thought to be faulty (contact Service Agent).

 

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DO NOT

 use wrench unless you have been instructed in its use by a qualified person.

 

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DO NOT

 use any cleaner which might affect the high pressure grease with which the wrench is packed.

 

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DO NOT

 apply more torque than the maximum scale reading.

 

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   After use adjust to lowest torque setting (but not below),clean and store in a safe, dry, childproof location.

2.  INTRODUCTION

M

anufactured from hardened and tempered Chrome Vanadium steel with a polished satin finish. Smooth action ratchet head with flip reverse 

action to allow torquing in both directions. Easy to use torque adjustment, locks when required setting is selected. Calibration tolerance in 

accordance with BS EN ISO 6789-1:2017. Wrenches are individually tested to standards with ±4% accuracy and each wrench is issued with an 

individually numbered test certificate. Supplied in storage case.

3.  SPECIFICATION

Model No:................................................................ STW704

Drive: ..........................................................................

1/2”Sq

Length: .......................................................................

610mm

Range: ...............................................

60-340Nm(44-250lb.ft)

4.  OPERATION

4.1. 

  

Hold torque wrench so that required scale - on shaft, just above hand grip - is uppermost and visible.

4.2. 

  

Pull down the locking ring to unlock the hand grip.

4.3. 

  

Turn hand grip to select torque setting as follows:

 

Required setting - 56Nm Hold back the locking ring and turn hand grip until top edge is level with the 55Nm line on the shaft scale  

 

and the ‘zero’ on the hand grip graduation is aligned with the centre line of the shaft scale.

 

Rotate the grip further, clockwise, until the ‘1’ on the hand grip graduation is aligned with the centre line to give a setting of 55 + 1 =  

 

56Nm.

4.4. 

  

Release the locking ring to prevent accidental alteration of the setting.

4.5. 

  

When tightening the nut/bolt you will feel and hear the wrench mechanism click when the set torque is reached. Immediately stop  

 

applying force to wrench to avoid over-tightening the nut/bolt.

4.6. 

  

Wrench will reset ready for the next application.

NOTE:

  If wrench is not used for some while, operate it a few times, at a low setting, to ensure all internal parts are coated in grease.

5.  RECALIBRATION

5.1. 

  

To ensure continued accuracy the wrench should be recalibrated annually and after any impact or other misuse. Contact an NAMAS  

 

accredited laboratory.

6.  CALIBRATION CERTIFICATE

6.1. 

  

See last page for calibration certificate.

S

TW704 Issue 3  28/08/20

Original Language Version

© Jack Sealey Limited

Refer to 

instructions

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