Sunex HD 6710 Manual De Operation página 4

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8. In some situations, this jack can be used as a jack stand but should be used in a matched pair to support one end of a vehicle only. Jacks
used as jack stands are not to be used to simultaneously support both ends or one side of a vehicle. In order to use this jack as a jack
stand, the second large pin provided should be put through the ram tube, leaving enough pin exposed on either side of the ram tube to
rest on top of the cylinder sleeve when the air is slowly released for lowering. The air in the cylinder should be completely released when
the pin is resting on the cylinder sleeve. Regardless of using this jack for lifting purposes or jack stand purposes, make sure the setup is
stable. If the jacks are used in pairs, it is important to remember the lifting of the load is not synchronized and the operator should be very
careful to lift one jack at a time in reasonably short increments to prevent unstable conditions.
9. After work is done, depress the air valve to raise the vehicle just high enough to clear the jack stand saddles. Be sure load is stable. If it
is not, lower the load back onto the jack stands. Make appropriate setup corrections and repeat the step again. Remove the jack stands
from under the vehicle, being very careful not to move the vehicle. After the jack stands are removed, very slowly and carefully lower the
vehicle down to the ground.
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE MAINTENANCE section of this manual to alert you to potential personal
injury hazards. Obey all instructions to avoid possible injury or death.
1. Always store the jack in a well protected area where it will not be exposed to inclement weather, corrosive vapors, abrasive
dust, or any other harmful elements. The ramps must be cleaned of water, snow, sand or grit before using.
IMPORTANT: Water can enter the jack's cylinder through the shop's compressed air system or the top of the jack where the ram is
located. Water can enter the top of the jack if left out in inclement weather or used near a wash rack or place where water/fluid pres-
sure is used to clean the underside of vehicles or other components. Water in the jack's cylinder can cause the interior wall of the
cylinder to rust and cause damage to the ram's air seal rendering the jack inoperable. An inoperable jack caused by rust or contami-
nation is not eligible for warranty consideration. A jack believed to contain water must be serviced at an authorized repair center as
soon as possible.
2. The jack must be lubricated periodically in order to prevent premature wearing of parts. A general purpose grease must be applied
to the axle where the wheels rotate and a very thin coat on the ram. Do not lubricate any portion of the lift saddle and make sure the
saddle is free from grease, any kind of lubricant, or debris before using the jack. Use a high quality grease to lube the cylinder wall.
3. An air leak requires immediate repair which must be performed in a dirt-free environment by qualified hydraulic repair personnel
who are familiar with this equipment. Authorized Service Centers are recommended.
4. Every jack owner is responsible for keeping the jack label clean and readable. Contact Sunex for a replacement label if your jack's
label is not readable.
5. Inspect the jack before each use. Do not use the jack if any component is cracked, broken, bent, shows signs of damage, or leaks
air. Do not use the jack if it has loose or missing hardware or components, or is modified in any way. Take corrective action
before using the jack again.
6. Do not attempt to make any repairs unless you are a qualified repair person that is familiar with this equipment.
TROUBLESHOOTING
Assuming the source of compressed air is functioning properly and supplying air pressure to the jack's air valve, the only causes for a jack's
inability to lift a load would be the jack's air valve is blocked or its ram seal is damaged. In either case, the jack must be taken to an
authorized service center for repair.
6710
4
rev. 10/13/10

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