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5. OPERATION 

 

WARNING! Ensure you read, understand and   
apply safety instructions before use. 

5.1. 

Only use impact sockets which are specifically   

designed for use with an impact wrench. 

5.2. 

Connect the wrench to the air hose as in section 4. 

5.3. 

Place the socket fully over the subject nut and   

depress the trigger to operate the wrench. 

5.4. 

To change the torque direction depress the button 

  in fig.1 and release. Depress and release again for 
  both directions. If the button remains outermost, then reverse direction; innermost then 

forward direction. See also 

"F" 

and 

"R" 

symbols on the impact wrench handle. 

5.5. 

A "soft start" torque of 272Nm is available by depressing the primary "feather touch" trigger 
in fig.1. 

5.6 

Further depression of the secondary trigger in fig.1 provides the maximum torque available. 

 

DO NOT 

use any additional force upon the wrench in order to remove a nut. 

 

DO NOT 

allow the wrench to free run for an extended period of time as this will reduce 

bearing life. 

 

 

 

 

 

 

 

 

6. MAINTENANCE 

 

WARNING! 

Disconnect the wrench from the air supply before changing accessories, 

servicing or performing maintenance. 

Replace or repair damaged parts. 

Use genuine parts only. Unauthorised parts may be 

dangerous and will invalidate the warranty. 

6.1. 

If the air system does not have an oiler, lubricate the air wrench daily with a few drops of   
air tool oil dripped into the air inlet. 

6.2. 

Clean the wrench after use with a mild detergent on a moist cloth. 

6.3. 

For a full service contact your local service agent. 

6.4. 

When not in use, disconnect from the air supply, store in a safe, dry, childproof location. 

 
 

Summary of Contents for CT3990

Page 1: ... 1 2 Square Drive CT3990 ORIGINAL INSTRUCTIONS Cannon Tools Limited Address 20 Station Road Rowley Regis West Midlands B65 0JU U K SAVE THESE INSTRUCTIONS AND PRECAUTIONS READ ALL PRECAUTONS AND INSTRUCTIONS BEFORE USE ...

Page 2: ...n and type as brought into circulation by us In case of alteration of the machine not agreed upon by us this declaration will lose its validity Product description 3 8 DRIVE AIR RATCHET WRENCH Model CT0675 Applicable EC Directives EC Machinery Directive 2006 42 EC Harmonized standards EN ISO 12100 EN ISO 11148 6 20 Station Road Rowley Regis West Midlands B65 0JU U K Mr Gurcharan Tony Singh Sangher...

Page 3: ...oil and sharp edges Check air hose for wear before each use and ensure that all connections are secure Only use impact sockets which are specifically designed for use with an impact wrench Wear approved safety eye face shield ear defenders and hand protection Follow all workshop safety rules regulations and conditions when using the wrench Maintain correct balance and footing Ensure the floor is n...

Page 4: ...line will damage the wrench 4 1 4 Clean the compressor air inlet filter weekly Recommended hook up procedure is shown in fig 1 see also note 4 2 4 1 5 Line pressure should be increased to compensate for unusually long air hoses over 8 metres The minimum hose diameter should be1 4 I D and fittings must have the same inside dimensions 4 1 6 Keep hose away from heat oil and sharp edges Check hose for...

Page 5: ...er in fig 1 5 6 Further depression of the secondary trigger in fig 1 provides the maximum torque available DO NOT use any additional force upon the wrench in order to remove a nut DO NOT allow the wrench to free run for an extended period of time as this will reduce bearing life 6 MAINTENANCE WARNING Disconnect the wrench from the air supply before changing accessories servicing or performing main...

Page 6: ...e of hose connectors To remedy check the air supply and follow instructions in section 4 b Grit or gum deposits in the wrench may also reduce performance This may be evident in the air strainer located in the area of the air inlet Flush the wrench out with gum solvent oil or an equal mixture of SAE No 10 oil and paraffin Allow to dry before use 8 ASSEMBLY DIAGRAM AND PARTS LIST ...

Page 7: ...crew 6 12 Front End Plate 1 44 Screw 1 13 Hammer Cage 1 45 Washer 1 14 Hammer Dog 2 46 Washer 1 15 Hammer Pin 2 47 Ball Bearing 1 16 Anvil 1 2 1 48 Ball Bearing 1 17 Socket Retainer 1 49 Retainer Ring 1 18 Anvil Bushing 1 2 1 50 O Ring 1 19 Front Cover Ass y 1 51 O Ring 2 20 Valve Bushing 1 52 O Ring 2 21 Pin 1 53 O Ring 1 22 Spring 1 54 O Ring 1 23 Spring 1 56 Aluminum nameplates 1 24 Reverse Val...

Page 8: ...7 CANNON TOOLS LTD Add 20 station road Rowley Regis west midlands B65 0JU U K Made in China ...

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