background image

27

STAHLWILLE 

Standard Manoskop

® 

721

 

Service Manoskop

®

 

 

730

Technical description

All models

Manoskop

®

 721, 730 are adjustable 

torque wrenches with a cut-out, tactile 
and audible cut-out signals.

These torque wrenches have a safety 
cut-out mechanism.

The wrench is set to cut-out at a 
certain torque level by setting the 
required value on the force-free 
sliding scale. 

The setting slide has an automatic 
setting fail-safe mechanism.

The measuring element is a flexible 
rod. The flexible rod is not 
pretensioned so it is only under 
tension from the start to the end of the 
actual tightening operation until the 
wrench cuts out.

List of contents

Technical description .................. 27

ã=

Important safety points........... 30

Operation .................................... 32
Maintenance ............................... 42
Cleaning the Manoskop

®

........... 47

Accessories ................................ 48
Disposal ...................................... 48

Summary of Contents for Manoskop 721/15

Page 1: ...in torque level by setting the required value on the force free sliding scale The setting slide has an automatic setting fail safe mechanism The measuring element is a flexible rod The flexible rod is not pretensioned so it is only under tension from the start to the end of the actual tightening operation until the wrench cuts out List of contents Technical description 27 ã Important safety points...

Page 2: ...issible deviation of the set value from the absolute value at cut out is 4 Manoskop 721 and 730 comply with DIN EN ISO 6789 Type II Class A Every Manoskop has a unique serial number and is supplied with a works calibration certificate Manoskop 721 5 and 721 15 have a permanent switchable ratchet with a permanent square drive sizes are shown in the Technical Specifications on page 29 Controlled cou...

Page 3: ...36 30 150 25 110 60 300 50 220 square drive shaft fixed usable from both sides 10 3 8 12 5 1 2 12 5 1 2 Length mm 338 415 530 weight g 915 1310 1710 Manoskop 730 range insert able square drive Length Weight Typ Nm ft lb in lb mm g 730 2 4 20 9 x 12 178 5 318 730a 2 35 175 9 x 12 178 5 318 730 4 8 40 9 x 12 222 398 730a 4 70 350 9 x 12 222 398 730 5 6 50 5 36 9 x 12 315 800 730a 5 6 50 50 440 9 x 1...

Page 4: ... instruction booklet in particular the safety instructions and technical tolerance limits The buyer is required to ensure that all users comply with these instructions Any use beyond the use described here is in breach of the intended purpose The buyer and user are responsible for any damage or injury resulting from non adherence to these instructions Manoskop 721 and 730 have not been designed fo...

Page 5: ...se e g test equipment inspection to ISO 9000 et seq inspection should take place after approx 5000 uses or every 12 months whichever is the shorter If an inspection shows that there is excessive deviation the torque wrench will have to be readjusted see page 44 Additional important safety points may apply depending on the application These are found in the appropriate sections marked with danger s...

Page 6: ... the limits given in these instructions Please note that extremes of climate cold heat humidity may affect measuring accuracy Avoid overloading the tool by more than 30 of the maximum permissible load in the direction of tightening or in the opposite direction The Manoskop may be damaged After such an overload the readings may be inaccurate in such a way that the user does not notice ...

Page 7: ...ave been manufactured to comply with standards and are the correct shape and size for the nut or bolt to be tightened STAHLWILLE inserts guarantee the connection will be a good fit and that the drive profile will fit exactly ã CAUTION Please use only insert tools made by STAHLWILLE ã CAUTION Ensure the maximum permissible load of the insert or tool used is not exceeded This might be lower than the...

Page 8: ...d clockwise tightening switch the ratchet to R or for uncontrolled loosening of joints to L ã CAUTION Use of home made special tools may be dangerous If you need to manufacture your own tools please contact STAHLWILLE first ã DANGER When using insert tools ensure that the locking pin has located correctly Otherwise there is a danger of injury or damage ...

Page 9: ... the square drive is fitted to the right side of the torque wrench 2 If not push the square drive out through the upper side to the right side 3 For controlled tightening switch the ratchet to R or for uncontrolled loosening of joints to L 4 Slide the insert over the square drive until it locates ...

Page 10: ... Ensure the locking pin locates in the hole 2 Check to see that the insert tool is properly attached 3 To tighten counter clockwise turn the insert tool through 180 before attaching to the torque wrench 4 If you are using a ratchet insert tool set this to the desired direction by turning the control knob Removing insert tools 730 2 and 730 4 1 Insert a fine punch into the locating hole of the shel...

Page 11: ... to depress the locking pin 2 Extract the insert tool Setting the torque level The torque level at which the wrench cuts out is set by moving the scale against the fixed mark Always approach the desired torque setting from a lower value Intermediate settings between two marks on the scale can be estimated In order to be able to set the scale the setting fail safe mechanism has to be operated first...

Page 12: ... underside of the tool or the pressure plate in the end of the handle as appropriate to release the setting fail safe mechanism 2 Slide the scale to a torque level lower than the desired cut out value 3 Now slide the scale to the desired cut out value ...

Page 13: ...ve been designed to work in only one direction The direction is marked with an arrow Controlled counter clockwise tightening is possible by turning the Manoskop over Exceptions The Manoskop 721 5 and 721 15 cannot be used for counter clockwise tightening For controlled counter clockwise tightening using the Manoskop 721 30 in the turned over position the square drive must first be pushed through t...

Page 14: ...s process Using the torque wrench ã CAUTION Important Never exceed a limit of 130 of the maximum scale reading Do not use the tool for loosening rusty nuts and bolts This may cause damage to the torque wrench After such an overload the readings may be inaccurate in such a way that the user does not notice ã DANGER Before you use the wrench check that the cut out value is set to the correct level a...

Page 15: ... any interruption particularly during the final phase until you feel a jerk and hear a click The torque level set on the scale has now been reached As soon as the torque wrench has cut out it is ready for the next job ã CAUTION Important Once the wrench has cut out never apply more pressure You should therefore not pull too fast in case you cannot stop the motion quickly enough when you hear the c...

Page 16: ...nch must be adjusted The inspection and adjustment must be carried out in accordance with DIN EN ISO 6789 Checking the accuracy of the cut out value A torque tester is necessary for the inspection with sufficient capacity for the wrench to be tested and with a guaranteed accuracy of 1 of the displayed reading If you have access to such a tester you may inspect the Manoskop yourself Suitable torque...

Page 17: ...torque wrench to 60 of the maximum scale reading 6 Operate the torque wrench five times on the torque tester Check to see that the readings shown on the torque tester are not more than 4 15 greater and not more than 3 85 smaller than the value set on the torque wrench ã CAUTION Important note on the accuracy of the readings Once the wrench has cut out never apply more pressure You should therefore...

Page 18: ...eviations greater than the permitted amounts the wrench will require readjusting Adjusting for deviations in cut out value You may return your torque wrench to STAHLWILLE for adjustment You will then receive the tool back with a new works calibration certificate You may adjust the torque wrench yourself In this case however STAHLWILLE s accuracy guarantee is void A torque tester is necessary for t...

Page 19: ...the lower end of the scale range The screw which is closest to the head is primarily for adjusting the upper end of the scale range Each screw has a minor effect on the adjusting range of the other screw To protect the mechanisms from dirt these two holes are plugged The Manoskop 730 2 and 730 4 have the holes under the removable plastic cover for protection To adjust the wrench you will need the ...

Page 20: ...wer end of the range insert the Allen key in the other hole 3 Turn the Allen key with great care and very slowly Turning in a clockwise direction increases the cut out torque level turning in the other direction decreases it The screws will lock in any position 4 Once you have made an adjustment using one screw check the effect by testing the cut out value on the torque tester 5 Repeat the adjustm...

Page 21: ... plugs are available from STAHLWILLE Cleaning the Manoskop Please use only white spirit Other chemical substances may damage the plastic components ã CAUTION Important If you cannot compensate for the deviation within the prescribed tolerances using the method described here it is likely that the cut out mechanism is damaged Such defects can only be repaired if the torque wrench is dismantled Cont...

Page 22: ... insert tools Open ring insert tools Torx insert tools Bit holder insert tools For inspection and readjustment purposes Mechanical torque testers Electronic torque testers Services repairs testing and readjusting incl accuracy guarantee and new works calibration certificate Disposal When the tool finally has to be disposed of please observe your local environmental protection laws The handle is ma...

Reviews: