YATO YT-55600 Manual Del Usuario página 9

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Insert the wheel pins in the holes at the ends of the arms and fi x them with nuts (III). Put a fl at washer under each nut.
Attach the jack saddle (IV) on the top of the jack ram.
The lowering valve is loaded with a return spring. Lifting the load is possible in valve rest position. Turn the valve clockwise to
lower the jack saddle. The greater the angle of rotation in relation to the rest position, the greater the lowering speed of the saddle.
Hold the rotated valve until the lowering is complete. Release the valve to let it automatically return to its rest position and stop
lowering the jack saddle.
Before you start work, loosen the oil fi ller cap (V), loosen and hold the lowering valve (VI) in this position, and then perform several
full cycles of pumping with the pedal to ensure proper distribution of hydraulic oil and remove air from the hydraulic system. Then
release the lowering valve and tighten the oil fi ller cap.
It is necessary to check and tighten all screw connections before each use. This will increase the safety of use and extend the
service life of the jack.
Lowering
Before lowering, make sure that the load to be lowered does not cause injury to the operators. Also make sure that the jack and
the load being lifted are within the operator's sight when making any movements.
Prepare the component to be lowered by unscrewing all parts of the car structure which may prevent the load from being lowered
freely.
Put the jack under the load to be lowered. Pump with the pedal until the jack saddle comes into contact with the load to be lowered.
Ensure the correct alignment of the saddle central position and the centre of gravity of the load. Release the lugs, loosen the bolts
which hold the load in the vehicle structure. Watch the way the load rests on the jack saddle. If the jack tends to tilt, adjust the
position of the load on the saddle.
Slowly turn the lowering valve to lower the saddle. Keep the movement of the load under control until it is completely lowered.
Release the valve and carefully take the jack with the load out from underneath the car. When lowering the load, ensure that the
jack saddle or the load may catch on the vehicle's structural components, which may lead to a loss of balance of the jack and/or
the car. In such cases, stop lowering immediately and remove the obstacle.
Lifting
Before you start lifting make sure that the jack and the load being lifted are within the operator's sight when making all movements.
Make sure that the lowering valve is in the rest position. Start pumping by pressing and releasing the pedal. The jack saddle will
start to rise. When you reach a desired height, secure the load, for example by attaching it to the car structure, and then lower the
jack saddle and take the jack from underneath the vehicle.
Maintenance
When not in use, the ram must be in the bottom position. This prevents corrosion on the ram surface.
Keep the jack clean and lubricate the outer moving parts of the jack at least every 10 hours of operation.
Purging air from the hydraulic system
The following works must be carried out in a professional service centre.
From time to time, air bubbles accumulate in the hydraulic system of the jack. This can reduce the eff ectiveness of the jack. If such
is the case, purge air from the hydraulic system of the jack.
Position the jack so that the oil tank is vertical. Loosen the oil fi ller cap (V), loosen and hold the lowering valve (VI) in this position,
and then perform several full cycles of pumping with the pedal to remove air from the hydraulic system. Then release the lowering
valve and tighten the oil fi ller.
Check the operation of the jack and, if necessary, repeat the purging operation.
Oil refi ll, lubrication
The following works must be carried out in a professional service centre.
Move the jack so that its ram is in a vertical position. Lower the ram to the lowest position. Remove the oil fi ller cap (IV).
Fill only with hydraulic oil with a viscosity class SAE 10. Using other liquids for this purpose is not allowed. Fill the tank up to the
lower edge of the oil fi ller.
Purge air as described under section "Purging the air from the hydraulic system".
Replace the oil fi ller cap. Check the function of the jack.
Lubricate the articulated joints and other moving parts of the jack at regular intervals (at least every 10 hours of operation).
O R I G I N A L
I N S T R U C T I O N S
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