Sunex HD 6744 El Manual Del Propietario página 3

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OWNER'S MANUAL
SETUP INSTRUCTIONS
PLEASE REFER TO THE EXPLODED VIEW DRAWING IN THIS MANUAL IN ORDER TO IDENTIFY PARTS.
1.
Install the handle assembly (#9) in the chassis (#5) so the holes in the lower portion of the handle line up with the holes in
the chassis. Push the handle yoke (#13) pivot shaft through all the holes and secure the shaft on both ends with the retaining
rings provided.
2.
Turn the entire jack on its side in order to hook up the orange and black air hoses that are coming out of the bottom of the handle (#9).
As you are facing the back of the jack, pull the orange and black hoses back towards you and route them over the top of the pivot
shaft (#13) so that they are in line to engage the connectors in the back of the tank (#5). Firmly push the black hose into the connector
(#11) labeled black and the orange hose into the connector (#11) labeled red. Pull on both hoses after they are installed into the
connectors to make sure they are firmly seated. Turn the jack upright.
3.
Install an air nipple that is suitable for your shop in the switch assembly (#7). Use pipe dope tape to seal the nipple in the switch
assembly and be careful not to let any excess tape enter the air system. Do not over-tighten the nipple as this could strip the threads
in the switch.
4.
Install the adapters (#10 and #19) in the holder at the base of the handle assembly (#9).
5.
Hook the shop air line quick disconnect onto the nipple.
6.
Due to the back pressure release system design of this jack, the jack's hydraulic system very rarely becomes air bound. Indication of an
air bound system is a ram that does not rise smoothly. In some extreme case of an air bound system, air can be purged by following
this procedure:
PURGING AIR FROM THE HYDRAULIC SYSTEM
a. Pump the jack to maximum height by turning the air lever all the way to the right. After maximum height is reached, turn the air
lever to the left to lower the jack all the way down.
b. Repeat step "a" several times 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.
IMPORTANT: Before attempting to raise any vehicle, check vehicle service manual for recommended lifting surfaces.
OPERATION:
1.
Become familiar with the identification and function of the operating jack components.
a. The ram (#26) is the shaft that comes out of the jack when you rotate the switch assembly lever (#7) to the right. Lowering the ram
is accomplished by rotating the lever to the left.
b. The saddle (#25) has a hole in it to receive the adapters (#10 and #19). The adapters can be stacked on top of each other for
additional height. Evaluate the work to be done to determine if there is enough ram stroke to lift the load. Adding adapters can
bring the jack closer to the load so you can get more effective ram stroke.
2.
Chock the vehicle's tires that will not be lifted off the ground prior to lifting the vehicle and if available, apply the emergency brake or any
other method of braking.
3.
With the jack in its lowered position and the handle all the way down and locked, push the jack under the vehicle and to its designated
lift point. Lock the handle in a position that will not interfere with the vehicle when raised or lowered. Keep the handle in that locked
position until the work is completed and you are ready to remove the jack from use.
4.
In most cases, between 116 and 174 psig input air pressure (do not exceed 200 psig) will lift the maximum capacity load. Rotate the
air lever to the right until the top of the ram comes close to the designated lift point. Make sure the designated lift point is flat, parallel
to the ground and free from grease, any kind of lubricant, and debris. Never get under the vehicle when the jack is being used.
Proceed with pumping the jack in order to lift the vehicle to the desired height. During lifting, inspect the position of the jack in relation to
the ground and the ram in relationship to the load to prevent any unstable conditions from developing. If conditions look like they are be
coming unstable, slowly lower the load and make appropriate setup corrections after the load is lowered.
5.
When the vehicle or load is lifted to its desired height, immediately place jack stands capable of safely supporting the load in their
designated positions and adjust the stands' support columns up as close to the designated vehicle support points as possible. Although
jack stands are individually rated, they are used in a matched pair to support one end of the vehicle only. Stands are not to be used to
simultaneously support both ends or one side of a vehicle. Rotate the air lever to the left to lower the vehicle onto the jack stands. Make
sure the vehicle is safely supported by the jack stands' 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, rotate the air lever to the right to raise the vehicle off the jack stands. Make appropriate setup changes and slowly and
carefully lower the vehicle onto the jack stands. DO NOT CRAWL UNDER ENGINE OR PLACE ANY PART OF YOUR BODY UNDER
ENGINE AT ANY TIME.
6.
After the work is done, rotate the air lever to the right until the vehicle is high enough to remove the jack stands from underneath the
vehicle. Rotate the air lever to the left to lower the vehicle to the ground and remove the jack from under the vehicle.
6744
TRUCK AXLE JACK WITH AIR RETURN
3
6744
CAPACITY: 44 TON
Rev. 1/22/20

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