IMPACT WRENCH MODEL NO: CAT78 PART NO: 3110790 OPERATING & MAINTENANCE INSTRUCTIONS GC0813
INTRODUCTION Thank you for purchasing this CLARKE Impact Wrench. Before attempting to use this product, please read this manual thoroughly and follow the instructions carefully. In doing so you will ensure the safety of yourself and that of others around you, and you can look forward to your purchase giving you long and satisfactory service. IMPORTANT Please read all of the safety and operating instructions carefully before using this product.
GENERAL SAFETY RULES CAUTION: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY. WORK ENVIRONMENT 1. Keep the work area clean and tidy. 2. Dress appropriately - Do not wear loose clothing or jewellery. Tie long hair out of the way. 3. Keep children and visitors away - Do not let children handle the impact wrench. 4. Do not operate the impact wrench where there are flammable liquids or gases. 5. Keep the air supply hose away from heat, oil and sharp edges. 6.
10. Do not carry out any alterations or modifications to the impact wrench. 11. Always disconnect from the air supply when: • Performing any maintenance • The impact wrench is not in use. • The impact wrench will be left unattended. • Moving to another work area. • Passing the impact wrench to another person. 12. Never use the impact wrench if it is defective or operating abnormally. 13. The impact wrench should be serviced at regular intervals by qualified service personnel. 14.
OVERVIEW NO DESCRIPTION NO DESCRIPTION 1 Anvil 4 Speed Control Regulator 2 Forward/Reverse Valve 5 1/4” BSP (Female Air Inlet) 3 Trigger 5 Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.
THE COMPRESSED AIR SUPPLY AIR SUPPLY REQUIREMENTS WARNING: COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU ARE FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF COMPRESSORS AND COMPRESSED AIR SUPPLY. • Use only clean, dry, regulated compressed air as a power source. • Air compressors used with the impact wrench must comply with the appropriate European Community Safety Directives. • A build-up of moisture or oil in the air compressor will accelerate wear and corrosion in the impact wrench.
• A typical air line layout is shown above. If an automatic in-line filter/ regulator is used, it will keep the tool in good condition, but should be regularly checked and topped up with oil. SAE 10 oil should be used, and the lubricator adjusted to approx 2 drops per minute. BEFORE USE WARNING: COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU ARE FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF AIR COMPRESSORS AND COMPRESSED AIR SUPPLY. NOTE: Ensure the compressor is turned off. 1.
USING THE FORWARD/REVERSE BUTTON WARNING: WAIT UNTIL THE ANVIL HAS STOPPED ROTATING BEFORE OPERATING THE FORWARD/REVERSE BUTTON. Forward/Reverse rotation is selected by pushing the Forward/Reverse control forward or backward as required. 1. For normal tightening, the wrench should be operated in the forward direction. 2. For loosening, the wrench should be operated in the reverse direction. FITTING THE IMPACT SOCKET WARNING: NEVER USE STANDARD SOCKETS. THESE MAY SHATTER WITH SERIOUS CONSEQUENCES.
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.
MAINTENANCE WARNING: MAKE SURE THAT THE IMPACT WRENCH IS DISCONNECTED FROM THE AIR SUPPLY BEFORE STARTING ANY CLEANING, OR MAINTENANCE PROCEDURES. DAILY • Before use, drain water from the air tank, air line and compressor. • Pour a few drops of CLARKE airline oil, into the air inlet. This should be carried out regardless of whether or not an in-line mini oiler is used. If an in-line mini oiler is not used, this procedure should be repeated after every two to three hours of use.
Grit or gum deposits inside the tool may also reduce its efficiency. This condition can be corrected by cleaning out the air strainer and flushing out the tool with gum solvent or oil, or failing this, the motor may require dismantling. **Clarke Air Line Oil (part no. 3050825) is available from your CLARKE dealer.
TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION Tool runs at normal speed but slows down under any load. 1. Excessive pressure on 1. Reduce the force tool. applied to the tool. 2. Motor parts worn. 2. Return to Clarke dealer for repair. 3. Worn or sticking 3. Drip air tool lubricating mechanism due to oil into air inlet. Allow oil lack of lubricant. to soak moving parts before using. Tool runs slowly. Air flows weakly from exhaust. 1. Motor parts jammed with gum/dirt. 2. Regulator in closed position. 3.
PARTS LIST & DIAGRAM 13 Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.
PARTS LIST & DIAGRAM No Description No Description 1 Rubber Nose Guard 27 Ball Bearing 2 Oil Seal 28 N/A 3 Oiler Screw 29 Housing Band 4 Motor Housing 30 Rear End Cap 5 Reverse Valve Pin 31 Spring Washer 6 Reverse Valve Spring 32 Set 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 Pin 40 Pin 15 Hamme
DECLARATION OF CONFORMITY 15 Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.
