background image

9

Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]

OPERATION

OPERATING THE IMPACT WRENCH

1. Locate the socket over the nut to 

be tightened or loosened.

2. Squeeze the trigger to start the 

wrench.

3. Release the trigger switch to stop 

the wrench.

• The anvil will continue to rotate 

very briefly after the trigger has 
been released.

ADJUSTING THE POWER

1. To adjust the power, set the air 

regulator to one of the 5 settings 
available.(Setting 1-Low, 5 -High)

If you start by turning the regulator to 
its lowest setting and applying the 
wrench to a nut of known tightness (or 
torque setting), you can then 
gradually turn the regulator until the 
nut or bolt moves very slightly in the 
direction in which it was set. The 
wrench is now set to replicate that tightness. Note the setting for future use.

When critical torque values are not required, tighten the nut or bolt until 
secure, then turn a further quarter to a half turn, assuming no gaskets are 
being used between surfaces. For additional power on disassembly work, turn 
the regulator to its highest setting.

DISCONNECTING THE AIR SUPPLY

Do not disconnect the air supply hose until the compressor has been shut 
down and the compressed air released.

1. Refer to the compressor instruction manual for the procedure to shut down 

and release the compressed air.

2. Once the pressure has been released, disconnect the air supply hose from 

the impact wrench. 

Store the wrench safely in its box in a dry, secure environment.

Summary of Contents for CAT78

Page 1: ...OPERATING MAINTENANCE INSTRUCTIONS GC0813 IMPACT WRENCH MODEL NO CAT78 PART NO 3110790...

Page 2: ...and operating instructions carefully before using this product Please pay particular attention to all sections of these instructions that display warning symbols and notices GUARANTEE This product is...

Page 3: ...tired or under the influence of alcohol drugs or medication 2 Always wear eye protectors when using the impact wrench eye protectors must provide protection from flying particles from the front and t...

Page 4: ...k change couplings should not be located at the tool They add weight and could fail due to vibration 17 DO NOT force or misuse the tool It will do a better and safer job at the rate for which it was d...

Page 5: ...0 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com OVERVIEW NO DESCRIPTION NO DESCRIPTION 1 Anvil 4 Speed Control Regulator 2 Forward Reverse Valve 5 1 4 BSP Female Ai...

Page 6: ...unusually long air hose is required over 8 metres the line pressure or the hose inside diameter may need to be increased The minimum hose diameter should be 5 16 8mm ID and fittings should have the sa...

Page 7: ...h Remove the oil fill screw from the side of the mini oiler and fill with Air line Oil available from your CLARKE dealer Replace the screw before using the wrench 2 If a mini oiler is not being used r...

Page 8: ...ted in the forward direction 2 For loosening the wrench should be operated in the reverse direction FITTING THE IMPACT SOCKET 1 Select the impact socket you require which must be in good condition and...

Page 9: ...ly turn the regulator until the nut or bolt moves very slightly in the direction in which it was set The wrench is now set to replicate that tightness Note the setting for future use When critical tor...

Page 10: ...NING Keep the body of the impact wrench clean and free from debris Grit or gum deposits in the tool may reduce efficiency SERVICE AND REPAIR If the tool runs erratically or becomes inefficient althoug...

Page 11: ...ol for 5 seconds in order to lubricate the internal parts When not in use disconnect from air supply clean tool and store in a safe dry place SPECIFICATIONS Please note that the details and specificat...

Page 12: ...ealer for repair 3 Drip air tool lubricating oil into air inlet Allow oil to soak moving parts before using Tool runs slowly Air flows weakly from exhaust 1 Motor parts jammed with gum dirt 2 Regulato...

Page 13: ...13 Parts Service 020 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com PARTS LIST DIAGRAM...

Page 14: ...Screw 7 Set Screw 33 Screw 8 Housing Bush 34 Exhaust Cover 9 N A 35 Throttle Lever 10 Socket Retaining Ring 36 Pin 11 O Ring 37 Push Pin 12 Anvil 38 O Ring 13 Reverse Valve 39 Gasket 14 Hammer Cage P...

Page 15: ...15 Parts Service 020 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com DECLARATION OF CONFORMITY...

Page 16: ......

Reviews: