Preventative Maintenance - Sunex HD 4912DAH Manual Del Propietário

ASSEMBLY INSTRUCTIONS
SETUP
1. Refer to the exploded view parts drawing in this manual to identify parts mentioned in this setup procedure.
2. The two piece handle can be slip fit together to form a complete handle length.
3. Sometimes air gets trapped in the hydraulic system during shipping and/or handling.
PURGING AIR FROM THE HYDRAULIC SYSTEM
a. Attach the end of the handle to the jack's release valve and turn the handle in a counterclockwise direction two full revolutions from its closed
position.
b. Install the handle in the pump handle receiver and pump the jack about 15 full incremental pump strokes.
c. Attach the end of the handle on the release valve again and turn the handle in a clockwise direction until tight.
d. Proceed to pump the handle until the ram raises to maximum height.
e. If the condition seems better, repeat steps "a" through "d" until all air is purged from the system.
OPERATING INSTRUCTIONS
This is the safety alert symbol used for the OPERATING INSTRUCTIONS section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
1. The air/hydraulic bottle jack can be activated by manual pump or by depressing an air valve that is hooked up to the shop's compressed air
system. Regardless of the pump method used, the release valve at the base of the jack must be turned in a clockwise direction until tight in order
to activate the jack. The pump handle is used to turn the release valve. It will be necessary to use 100 to 120 PSI air pressure in order for the
jack to lift its maximum load capacity. Lowering the load may be accomplished by connecting the pump handle to the release valve and turning
it slowly and carefully in a counterclockwise direction. Make sure all parts of your body are out of the way when lowering a load. Sometime it is
better to use a floor jack with a long pump handle for the lift application.
2. DO NOT USE THE AIR HOSE TO PULL THE WEIGHT OF THE JACK AS IT MAY CAUSE DAMAGE TO THE FITTINGS AND/OR AIR HOSE. DO NOT
NEGLECT THE COMPONENTS, FITTINGS, ADAPTERS, AND HOSES BY ROUGH HANDLING OF THE JACK. DEFECTS RESULTING FROM ROUGH
HANDLING ARE CONSIDERED ABUSE OR MISUSE OF THE PRODUCT AND NOT ELIGIBLE FOR WARRANTY CONSIDERATION.
3. Before lifting a vehicle, chock the vehicle's tires that will not be lifted off the ground, put the vehicle transmission in "park" or in gear if a manual
operated transmission, and apply the emergency brake.
4. Position the jack under the load and determine how much ram stroke is required to lift the load to the desired height. If there is not enough
required ram stroke, turning the extension screw in a counterclockwise direction and using the proper adapter provided can make up the required
difference.
5. Before lifting a load make sure the saddle or adapter is centered on the load and the setup is stable. If not, reposition the jack and saddle contact
with the load until the setup is stable. During lifting, inspect the position of the jack in relationship to the ground and the ram in relation to the
load to prevent any unstable conditions from developing. If conditions look like they are becoming unstable, slowly lower the load and make the
appropriate setup corrections after the load is fully lowered.
6. THE ENTIRE BASE OF THE JACK IS TO BE USED AS THE LOAD BEARING SURFACE. LOAD MAY SLIP OFF THE JACK IF THE CORNERS OF THE
JACK'S BASE ARE USED AS THE ONLY LOAD BEARING SURFACE BECAUSE THEY COULD BEND.
7. After the load is lifted, immediately place jack stands in their designated locations and adjust the stands' support columns to where they almost
touch the vehicle. Although jack stands are individually rated, they are to be used in a matched pair to support one end of a vehicle only. Stands
are not to be used to simultaneously support both ends or one side of a vehicle. Slowly and carefully turn the release knob in a counterclockwise
direction to gently lower the vehicle onto the jack stands and make sure the vehicle is safely supported by the saddles and not the locating lugs
of the saddles. Inspect the relationship of the jack stands with the ground and the jack stand columns and saddles with the vehicle to prevent any
unstable conditions. If conditions look unstable, close the jack's release valve and depress the air valve to raise the vehicle off the jack stands.
Make the appropriate setup changes and slowly and carefully lower the vehicle onto the jack stand saddles.
8. After the work is done, close the release valve and depress the air valve until the jack is high enough to remove the vehicle or load from the jack
stand saddles. Be sure load is stable. If it is not, lower load back onto 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.
9. It should not be necessary to refill or top off the reservoir with hydraulic fluid unless there is an external leak. An external leak requires immediate
repair which must be performed in a dirt-free environment by qualified hydraulic repair personnel who are familiar with the equipment. Authorized
service centers are recommended. IMPORTANT: In order to prevent seal damage and jack failure, never use alcohol, hydraulic brake fluid, or
transmission oil in the jack. Use Chevron Hydraulic Oil AW ISO 32 or its equivalent Unocal Unax AW 150.

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.
IMPORTANT: The number one cause of jack failure in air/hydraulic jacks is dirt and moisture in the air motor and/or hydraulic system. The
shop air supply should be equipped with water and dirt filter traps that should be emptied or cleaned according to a monthly maintenance
schedule. An in line oil lubricator will extend the life of air/hydraulic jacks. Inoperable jacks caused by poorly equipped or maintained shop
air systems are not eligible for warranty consideration. Contaminants can also enter the air/hydraulic system when the shop air line is
disconnected from the jack air line and the line is dropped on the floor. Contaminants in the air couplers, once reconnected, will be driven
into the system.
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 jack must be cleaned of water, snow, sand or grit before using.
2. The jack must be lubricated periodically in order to prevent premature wearing of parts. A general purpose grease must be applied to the threads
on the extension screw. 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.
3. It should not be necessary to refill or top off the reservoir with hydraulic fluid unless there is an external leak. An external 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. IMPORTANT: In order to prevent seal damage and jack failure, never use
alcohol, hydraulic brake fluid, or transmission oil in the jack. Use Chevron Hydraulic Oil AW ISO 32 or its equivalent Unocal Unax AW 150.
4. Every jack owner is responsible for keeping the jack label clean and readable. Use a mild soap solution to wash external surfaces of the jack but
not any moving hydraulic components.
5. Do not attempt to make any hydraulic repairs unless you are a qualified hydraulic repair person that is familiar with this equipment.
4912DAH and 4920DAH 3 rev. 02/28/12