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External View, Specification, and Standard Accessory

How to operate a reverse lever

How to operate a throttle knob

Mounting of a socket

How to adjust torque

Mounting and removal of a bit

Checks and Countermeasures

CONTENTS

Warnings and Cautions for Impulse wrenches safely

21

23

9

16

Warnings and Cautions for Safe Use of Pneumatic Tool

28

Tightening torque of touch joint

28

24

26

29
30

31

33

32

36

37

 INSTRUCTION MANUAL FOR IMPULSE WRENCH

Pistol type/Square type  Bit type

Thank you very much for purchasing this YOKOTA product.

Please be sure to thoroughly read this Instruction Manual and fully 

understand the instructions before use.

Please be sure to retain this Instruction Manual at hand.

YLa60A/60B

YLa70A/70B

YLa60/60E

YLa70/70E

YLa80/80E

YLa90/90E

YLa110/110E

YLa120/120E

YLa140/140E

Summary of Contents for YLa110

Page 1: ...18 20 1 8 28 28 24 26 29 30 31 33 32 34 35 Sq YLa60A 60B YLa70A 70B YLa60 60E YLa70 70E YLa80 80E YLa90 90E YLa110 110E YLa120 120E YLa140 140E...

Page 2: ...s and Cautions for Safe Use of Pneumatic Tool 28 Tightening torque of touch joint 28 24 26 29 30 31 33 32 36 37 INSTRUCTION MANUAL FOR IMPULSE WRENCH Pistol type Square type Bit type Thank you very mu...

Page 3: ...1...

Page 4: ...2 1 100...

Page 5: ...3 5...

Page 6: ...4 85dB 85dB...

Page 7: ...5...

Page 8: ...6...

Page 9: ...7...

Page 10: ...8 1 2 3 TKa 46 32 ISO VG32...

Page 11: ...s or your YOKOTA representative to obtain the Manual or the warning label and then properly retain the Manual or replace the warning label In cases where you transfer or rent this product be sure to a...

Page 12: ...ly vary particularly in case of high velocity airflow This phenomenon is commonly referred to as mid flow loss or piping loss which results from loss or leakage to outside due to friction between airf...

Page 13: ...lfunctions of the pneumatic tool or accidents supply clean and dry com pressed air to it For that purpose it is recommended to install an air drier air filter etc Use proper air hose Use an oil resist...

Page 14: ...hazardous situation Pay careful attention to noise levels There are restrictions on noise levels prescribed by the laws and regulations as well as prefectural ordinances The pneumatic tool must be us...

Page 15: ...he pneumatic tool with great care Do not throw or drop the pneumatic tool to give it shocks Rough handling of the pneumatic tool could result in accidents or malfunctions of it Handle the air hose wit...

Page 16: ...nce the pneumatic tool is in imminent danger while in use NEVER bring your hand or a cloth to the moving part of the pneumatic tool Do not bring the pneumatic tool into contact with electricity Since...

Page 17: ...pneumatic tool with parts or screws dismounted from it Doing so could result in accidents Immediately stop using the pneumatic tool if there is any abnormality on the tool If there is any abnormality...

Page 18: ...tor part through the air inlet two or three times a day For that purpose it is recommended to install a lubricator with automatic drop function Above remommended oil can be handled by us Be sure to pe...

Page 19: ...ice factory For repair of the pneumatic tool ask us or our authorized or designated service factory through your YOKOTA dealer or distributor Note that we are not responsible for any accidents or defe...

Page 20: ...18 0 4 0 6MPa...

Page 21: ...19 1 2...

Page 22: ...20 6 6 10...

Page 23: ...tachment for power tools If attachments for hand tools are used there is a risk of breakage which may cause the accident such as scattering of fragments Therefore be sure to use attachments for power...

Page 24: ...damage and replace them if needed Precautions for use Check the tightening direction Operate a tool after confirming the direction of switching lever When switching the direction make sure that the to...

Page 25: ...s been in storage for more than 6 months may cause oil leakage because of damage to the seal part on the impulse mechanism When putting the tool in storage for a long period be sure to make the period...

Page 26: ...pprox 4000 rpm 300 min A N R 1 Torque Adjustable Range Reference 11 20 N m Hex Size of Bit 6 35mm Air Inlet Thread Pipe Thread Rc1 4 Air Hose Size 6 5m Noise Level 71dB A 1m 0 78kg Weight Iess Socket...

Page 27: ...rence 13 22 N m Square Drive 9 5 Air Inlet Thread Pipe Thread Rc1 4 Air Hose Size 6 5m Noise Level 71dB A 1m 0 78kg Weight Iess Socket about Overall Length about Overall Height about Overall Length ab...

Page 28: ...0 rpm 530 min A N R 1 Torque Adjustable Range Reference 60 95 N m Square Drive 12 7 Air Inlet Thread Pipe Thread Rc1 4 Air Hose Size 8 5m Noise Level 81dB A 1m 1 33kg Weight Iess Socket about Overall...

Page 29: ...27...

Page 30: ...be made when the motor is in stop condition Place a reverse lever to the positions of R or L properly A tool does not rotate with the reverse lever set to the intermediate position How to operate a re...

Page 31: ...lower rotation at the first step and corresponding rotation Torque generation in the event of load can be gradually increased by pulling a throttle knob slowly from the first step to the second ON 2 T...

Page 32: ...justment screw with a hexagon wrench to set torque Turning right increases torque and turning left decreases torque Do not turn the torque adjustment screw all the way to the maximum position or the m...

Page 33: ...a hexagon plug with a hexagon wrench When you set torque please tighten a hexagon plug even at test tightening Hammer case Hexagon wrench Hexagon plug 1 Torque adjustment screw one turn loosened from...

Page 34: ...ngth of the pin should be proper enough not to be extruded out of the socket O Fix an o ring over the socket to prevent the pin from coming off Mounting of a socket Pin Pin hole Socket Main shaft O O...

Page 35: ...aft B type bit for the B type main shaft When the bit chuck is released it will return to the original position Make sure that it does not fall off To remove the bit pull the bit while pulling the bit...

Page 36: ...34 R L Yes No...

Page 37: ...35 Yes No...

Page 38: ...toms of troubles and countermeasures Main shaft bushing seizure Reverse lever opening and closing operation failure Too low air pressure Silencer jam Throttle knob opening and closing operation failur...

Page 39: ...it is turned by fingers The tool does not stop even after a throttle lever is released Dust contamination Seized main shaft bushing Damaged ball bearing Damaged vane Motor part seizure Motor part sei...

Page 40: ...aka 550 0023 Japan TEL 81 6 6581 1721 FAX 81 6 6581 1725 Hiroshima Office 4 2 8 Nishikaniya Minami ku Hiroshima City Hiroshima 732 0804 Japan TEL 81 82 263 1473 FAX 81 82 262 3894 Kokura Office 2 12 3...

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