VV-CGQJD-LDJ-3T - Jack Vevor - Free user manual and instructions

Product Type	Long Ram Hydraulic Jack
Brand	Vevor
Model	VV-CGQJD-LDJ-3T
Lifting Capacity	3 tons (3,000 kg)
Lifting Stroke	500 mm
Minimum Height (Saddle Lowered)	660 mm
Maximum Height (Saddle Raised)	1,160 mm
Piston Diameter (D1)	17 mm
Piston Diameter (D2)	17 mm
Base Diameter (D3)	28 mm
Base Length (L)	25 mm
Power Source	Manual (Hand Hydraulic Pump)
Main Functions	Lifting heavy loads using a handle; controlled descent via release valve
Maintenance	Check and maintain hydraulic oil level; lubricate pivot points, axles and hinges; clean the piston and pump cylinder with an oily cloth
Safety	Do not exceed rated load; use only on hard ground with a board if necessary; support load with jack stands before any intervention; do not open release valve abruptly
Spare Parts	Handle, oil filler cap, release valve; contact Vevor after-sales service
Repairability	Replace hydraulic oil once a year; for any malfunction, contact the seller or Vevor technical support
General Information	Use with crane for heavy loads; do not use for other purposes; store with piston fully retracted

Frequently Asked Questions - VV-CGQJD-LDJ-3T Vevor

What is the maximum capacity of the Vevor VV-CGQJD-LDJ-3T jack?

The maximum lifting capacity is 3 tons (3,000 kg). Never exceed this load to avoid any risk of damage or accident.

How to use the jack to lift a load?

Place the jack on a hard and stable surface. Turn the release valve clockwise using the notched end of the handle to close it. Insert the handle into the socket and pump up and down to lift the load. Once the desired height is reached, immediately support the load with jack stands.

How to safely lower the jack?

Make sure all tools and people are clear. Using the notched end of the handle, slowly turn the release valve counterclockwise. Do not loosen it quickly to avoid a sudden and dangerous descent.

What type of oil to use and how to top up?

Use high-quality hydraulic oil. To top up, with the saddle fully lowered and the pump piston depressed, remove the filler cap and pour oil until it reaches the lower edge of the opening. Screw the cap back on. Avoid brake fluid or any other unsuitable fluid.

How to maintain the jack to extend its life?

Regularly check the oil level and lubricate pivot points, axles and hinges with light oil. Clean the piston and cylinder with an oily cloth, without using sandpaper. Replace the oil completely at least once a year and store the jack with the piston retracted.

What to do if the jack does not lift or lifts poorly?

Check that the release valve is properly closed. Make sure the load does not exceed the rated capacity. Bleed air by removing the oil filler cap with the cylinder retracted. If the problem persists, contact Vevor technical support.

Can the jack be used to support a load permanently?

No. The jack is a lifting device only. The load must be immediately supported by jack stands of appropriate capacity. Never work under a load supported only by the jack.

What are the essential safety precautions?

Read the manual completely. Do not overload the jack. Use it on hard, stable ground. Do not drop the load suddenly. Ensure all accessories are tightly secured before use. Keep labels and manual accessible.

How to bleed air from the hydraulic system?

With the cylinder fully retracted, remove the oil filler cap to let air escape. Replace the cap. If lifting performance remains poor, check the oil level and add if necessary.

Where to find spare parts or technical assistance?

Contact Vevor after-sales service via www.vevor.com/support for technical help or to order spare parts such as the handle or filler cap.

USER MANUAL VV-CGQJD-LDJ-3T Vevor

Technical Support and E-Warranty Certificate www.vevor.com/support

LONG RAM JACK

MODEL: 3T/4T/8T/12T

We continue to be committed to provide you with tools at competitive prices. "Save Half", "Half Price" or any other similar expressions used by us only represent an estimate of savings you might benefit from buying certain tools with us compared to top brands and does not necessarily mean to cover all categories of tools offered. We kindly remind you to verify carefully when placing an order with us whether you are actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

LONG RAM JACK

MODEL: 3T/4T/8T/12T

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you if there are any technology or software updates on our product.

Warning:

For your safety and to prevent injury, please read very carefully the following warnings and operating instructions:

- This is just a lift drive, which is designed to be used with cranes for heavier loads. Do not use this product for any purpose other than for which it was intended.

- This is a lifting device only, designed to be used with heavier loads. Do not overload; overloading may cause damage or failure of the unit. Do not use this product for any purpose other than that for which it was intended.

- The load must be supported immediately by other appropriate means. Never work on, under, or around a load until it is properly supported on appropriately rated jack stands.

- Do not drop the load suddenly, as the resulting shock to the unit may cause damage. The unit must be fully retracted before adding oil. Fill to the lower edge of the filling hole. Use only high-quality hydraulic fluid. Do not use brake fluid or any other type of improper fluids that may cause damage to the unit.

● All mounting hardware must be tight before using.

- Read, study, understand, and follow all instructions before use or maintenance.

- It is the owner's responsibility to keep labels and manuals available from the manufacturer. Failure to heed these and all other warnings pertaining to this product can result in sudden loss of the lifted load, resulting in death, personal injury, or property damage.

Caution:

Use the handle provided for this product or an authorized replacement handle to ensure proper release valve operation.

OPERATION INSTRUCTIONS:

1. Before operating, estimate the weight of the load. Do not overload the jack beyond its rated load.
2. Select the point of action according to the gravitational center. Place the jack on hard ground; if necessary, place a hard plank under the jack to avoid tottering or falling during operation.
3. Before operating the jack, first insert the notched end of the handle into the release valve. Turn the operating handle clockwise until the release valve is closed. Do not over-tighten the valve.
4. Insert the operating handle into the socket and steadily raise and lower the handle. The ram will rise, and the load will be lifted. It will stop rising when the required height is reached.
5. Lower the ram by turning the release valve. Using the notched end, turn it counter-clockwise and slacken it slowly when a load is applied, or accidents can occur.
6. When more than one jack is used at the same time, it is important to operate the different jacks at an equal speed with equal load. Otherwise, there is a danger of the entire structure falling.
7. At an ambient temperature from 27°F to 113°F, use machine oil (G8443-84) N15. At an ambient temperature from 4°F to 27°F, use synthetic spindle oil (GB442-64). Sufficient filtered hydraulic oil should be maintained in the jacks. Otherwise, the rated height cannot be reached.
8. Violent shocks must be avoided during operation.

9. The user must operate the jack correctly according to the operating instructions. If the jack has some quality problems, it cannot be operated.

To raise:

1. Using the slotted opening at the end of the handle, turn the release valve clockwise to tighten it.
2. Put the handle in the pressing handle holder and press up and down. The piston rod will rise slowly till the height you need. Then immediately tra

the load to appropriately-rated support devices such as jack stands.

To lower:

Remove the pressing handle. Using the slotted opening at the end of the handle, turn the release valve slightly counterclockwise to loosen it. Then the piston rod will move down slowly. When loaded, the release should not be turned quickly, otherwise too speedy lowering will lead to danger.

Warning:

Be sure all tools and personnel are clear before lowering load. Danger: dynamic shock loads are created by quickly opening and closing the release valve as the load is being lowered. The resulting overload may cause hydraulic system failure, which could cause severe personal injury and/or property damage.

FOR SAFETY'S SAKE

Lifting weight should not exceed the specified duty of this jack.

Without a supporting rack, it is not allowed to work under the lifted heavy load after it is raised.

ROUTINE MAINTENANCE

Proper quantity of oil should be maintained, otherwise the specified lift height would not be reached.

To avoid damaging, the jack should be kept from shocking while in operation.

The jack is not allowed to stand on one side or upside down.

This product is not suitable for the operation environment full of acid or alkaline corrosive air.

Adding oil

1. With saddle fully lowered and pump piston fully depressed, set jack upright, level position. Remove oil filler plug.
2. Fill until oil is level with the filler plug hole, reinstall oil filler plug.

Oil (G8443-84)N15

Changing oil

For best performance and longest life, replace the complete fluid supply at once per year.

1. With saddle fully lowered and pump piston fully depressed, remove the oil plug.
2. Lay the jack on its side and drain the fluid into a suitable container.

Note: Dispose of hydraulic fluid in accordance with local regulations.

1. Fill with good quality jack oil. Reinstall oil filler plug.

Lubrication

1. A coating of light lubricating oil to pivot points, axles, and hinges will prevent rust and assure that wheels, casters, and pump assemblies move freely.
2. Periodically check the pump piston and ram for signs of rust or corrosion. Clean as needed and wipe with an oily cloth.

Caution: Never use sandpaper or abrasive material on these surfaces.

1. When not in use, store the jack with pump piston and ram fully retracted.

Parameter table

Model	Lift Weight Capacity (TON)	Lifting Travel (mm)	Min height (mm)
3T	3	500	660
4T	4	500	610
8T	8	500	660
12T	12	500	660

Dimensions

Model	H (mm)	D1 (mm)	D2 (mm)	D3 (mm)	W (mm)
3T	660	17	17	28	25
4T	610	/	17	28	/
8T	660	17	17	30	22
12T	660	17	20	33	22

Plunger pump installation instructions

Troubleshooting

Symptom	Possible Causes	Corrective Action
Jack will not load	Release valve not tightly closed overload conditionAir supply in adequate	Ensure release valve tightly closRemedy overload conditionEnsure adequate air supply
Jack bleeds off after lift	Release valve not tightly closed Overload conditionHydraulic unit malfunction	Ensure release valve tightly closRemedy overload conditionContact seller
Jack will not lower after unloading	Reservoir overfilledLinkages binding	Drain fluid to proper levelClean and lubricate moving parts
Poor lift performance	Fluid level lowAir trapped in system	Ensure proper fluid levelWith ram fully retracted, remove filler plug to let pressurized air escape, reinstall oil filler plug
Will not lift full extension	Fluid level low	Ensure proper fluid level

VEVOR®

TOUGH TOOLS, HALF PRICE

Technical Support and E-Warranty Certificate www.vevor.com/support

VEVOR®

TOUGH TOOLS, HALF PRICE

Warming up:

Oil (G8443-84) N15

Oil change

Troubleshooting

Warming up:

Oil (G8443-84)N15

Oil change

TROUBLESHOOTING

www.vevor.com/support

VEVOR®

TOUGH TOOLS, HALF PRICE

Heating:

Oil (G8443-84)N15

Oil change

Heating:

Oil (G8443-84)N15

Oil change

NEED HELP? CONTACT US!

Machine Translated by Google

Heating:

Oil (G8443-84)N15

Oil change

TROUBLESHOOTING

NEED HELP? CONTACT US!

Warming up:

Oil (G8443-84)N15

Oil change

TROUBLESHOOTING

NEED HELP? CONTACT US!

Warming up:

Oil (G8443-84)N15

Oil change

TROUBLESHOOTING

www.vevor.com/support