YATO YT-0959 Manual De Instrucciones página 12

Work with thimble percussive wrenches
Before screwing with a wrench starts, place the screw or the nut on the thread manually (at least two turns).
Make sure the size of the wrench is correct for the screwed element. A wrong size may be a cause of damage to the wrench, the
screw or the nut.
Unscrewing and tightening
Adjust the pressure in the pneumatic system so as it does not exceed the maximum value for the given tool.
Set up the appropriate direction of rotation for the tool (F – tightening, R – unscrewing), and the appropriate turning moment. (V)
Install an appropriate thimble wrench on the collector of the tool. (IV)
Connect the key to the pneumatic system.
Place the key with the thimble installed on the element to be unscrewed or tightened.
Gradually release the trigger of the tool.
Once the work has been concluded, dismantle the pneumatic system and perform appropriate maintenance of the tool.
MAINTENANCE
Never use gasoline, solvents or another inflammable liquid to clean the tool. The fumes may ignite causing an explosion of the
tool and serious injuries.
Solvents used to clean the tool holder and the body of the tool may soften the tightening of the machine. Dry thoroughly the tool
before you start working with it.
If any irregularities in the functioning of the tool are detected, it must be immediately disconnected from the pneumatic system.
All elements of the pneumatic system must be protected from dirt.
Dirt in the pneumatic system may damage the tool and other elements of the pneumatic system.
Maintenance of the tool before every use
Disconnect the tool from the pneumatic system.
Before each use of the tool, place a small amount of maintenance liquid (e.g. WD-40) through the air inlet.
Connect the tool to the pneumatic system and start it for approximately 30 seconds. It will allow spreading the maintenance liquid
inside the tool and cleaning it.
Disconnect the tool from the pneumatic system again.
Place a small amount of SAE 10 oil inside the tool through the air inlet and other appropriate holes. It is recommended to use SAE
10 oil whose purpose is maintenance of pneumatic tools. Connect the tool and start it for a while.
Attention! WD-40 cannot be used as appropriate lubricating oil.
Wipe out the excess of oil that comes out through the outlets. If the oil is left, it may damage the tightening of the tool.
Other maintenance actions
Before each use of the tool, make sure there are no signs of damage on the tool. Collectors, tool holders and spindles must be
kept clean.
Every six months, or every 100 hours of operation, send the tool for revision which must be realized by qualified personnel in the
repair shop. If the tool was used without the recommended air supply system, increase the frequency of overhauls of the tool.
Defects
Stop operation of the tool immediately if any defect in its functioning has been detected. Work with a damaged tool may be a
cause of injuries. All repair and replacement of the elements of the tool must be performed by qualified personnel in an authorized
repair shop.
Defect
The rotation of the tool is too slow or
it is impossible to start the tool
The tool starts but then slows down
Insufficient power
Once the functioning has been concluded, the casing, ventilation slots, switches, additional handle and protections must be
cleansed with a stream of air (at a pressure not exceeding 0.3 MPa), with a brush or a cloth without any chemical substances or
cleaning liquids. Tools and handles must be cleansed with a clean cloth.
O R I G I N A L
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Possible solution
Introduce a small amount of WD-40 through the air inlet. Start the tool for a couple of seconds. It is possible that the blades
adhere to the rotor. Start the tool for approximately 30 seconds. Lubricate to tool with a small amount of oil. Attention! Excessive
amount of oil may cause a drop in the power of the tool. In such a case, clean the power transmission.
The compressor does not provide an appropriate flow of the air. The tool starts with the air collected in the tank of the
compressor. While the tank is being emptied, the compressor cannot follow up refilling the tank. Connect the tool to a more
efficient compressor.
Make sure the inside diameter of the installed hoses is not lower than 1/2". Check the regulator of pressure – pressure must be
set at the maximum value. Make sure the tool is properly cleaned and lubricated. If there are no results, send the tool for repair.
I N S T R U C T I O N S
GB