QJD-CB030A-00 - Jack Vevor - Free user manual and instructions

Product Type	Hydraulic bottle jack
Brand	Vevor
Model	QJD-CB030A-00
Lifting Capacity	3 tons (3000 kg)
Lifting Stroke	505 mm
Total Height (Retracted)	655 mm
Piston Diameter	16.5 mm
Overall Length	660 mm
Power Source	Manual (piston pump)
Main Functions	Lifting and lowering heavy loads, use with crane
Material	Steel
Safety	Relief valve, overload protection, necessity of supports
Periodic Maintenance	Annual oil change, lubrication of pivot points, oil level check
Recommended Oil Type	Hydraulic oil 32# anti-wear or equivalent
Spare Parts	22 listed parts (seals, balls, valves, etc.)
Warranty	Electronic warranty certificate at vevor.com/support

Frequently Asked Questions - QJD-CB030A-00 Vevor

What is the maximum capacity of the Vevor QJD-CB030A-00 jack?

The maximum lifting capacity is 3 tons (3000 kg). Never exceed this load to avoid damaging the device and causing injury.

How to add hydraulic oil to the jack?

Ensure the saddle is fully lowered and the pump piston is depressed. Place the jack vertically, remove the filler plug, and add oil up to the lower edge of the opening. Use hydraulic oil 32# or equivalent.

What if the jack does not lift the load?

Check that the relief valve is fully closed (turned clockwise). Ensure you are not overloaded. If the problem persists, there may be air in the system: with the ram retracted, remove the filler plug to release air.

How to lower the load safely?

Remove the pressure handle. Using the slotted end of the handle, turn the relief valve slowly counterclockwise. Do not loosen too quickly to avoid a sudden drop. Ensure no one is under the load.

What is the recommended oil change frequency?

It is recommended to replace the oil completely at least once a year for optimal performance. Drain by laying the jack on its side and dispose of used oil according to local regulations.

Can the jack be used alone to support a load?

No, the jack is only a lifting device. After lifting the load, you must immediately transfer it to suitable supports (jack stands) before working underneath.

How to lubricate the Vevor jack?

Apply a light coat of lubricating oil on pivot points, axles, and hinges to prevent rust and ensure smooth movement. Clean the piston and ram with an oily cloth, without using sandpaper.

What if the jack lowers by itself after lifting?

This may be due to a poorly closed relief valve, overload, or hydraulic malfunction. Ensure the valve is tightly closed. If the problem persists, contact after-sales service via vevor.com/support.

Is the jack suitable for a corrosive environment?

No, this jack is not designed to operate in air containing corrosive acids or alkalis. This could damage the hydraulic components.

Where to find the spare parts list?

The user manual includes a table with 22 numbered items (valve body, balls, seals, etc.). To order parts, contact Vevor technical support.

USER MANUAL QJD-CB030A-00 Vevor

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

LONG RAM JACK

MODEL: QJD-CB040B-00 / QJD-CB030A-00 / QJD-CB080A-00 / QJD-CB080B-00

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

MODEL: QJD-CB040B-00 / QJD-CB030A-00 / QJD-CB080A-00 / QJD-CB080B-00

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

To raise:

1. Using the slotted opening at the end of the handle, turn the release valve clockwise to tighten it.

Put the handle in the pressing handle holder and press down. The piston rod will rise slowly till the height you need. Then immediately transfer 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 body 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 to 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.

Changing oil

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

1. With saddle fully lowered and pump piston fully depressed, remove oil filler 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.
3. Fill with good quality jack oil. Reinstall oil filler plug. We recommend anti-wear hydraulic oil or equivalent.

Lubrication

1. Apply a light coat of lubricating oil to pivot points, axles, and hinges to prevent rust and ensure 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 materials on these surfaces.

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

Warning: Do not adjust this valve.

Structural composition

Models: QJD-CB040B-00 / QJD-CB030A-00 / QJD-CB080A-00 / QJD-CB080B-00

PART LIST

ITEM No.	DESCRIPTION	QTY		ITEM No.	DESCRIPTION	QTY
1	Valve body	1		12	4mm steel ball	1
2	Conical screw	2		13	Top cap	1
3	gasket	1		14	Top cover sealing gasket	1
4	Pump body	1		15	Oil storage tank	1
5	Pump core group	1		16	Cylinder barrel	1
6	Connecting rod	1		17	Oil plug	1
7	Jack holder	1		18	Cotter pin	3
8	Pressure relief valve	1		19	Flat shoulder pin	3
9	6mm steel ball	3		20	Trapezoidal sealing ring	1
10	Relief valve	1		21	Cylinder sealing gaske	1
11	Pressure relief valve	1		22	Piston rod group	1

Parameter table

Model	Lifting Capacity (TON)	Lifting Travel (mm)
QJD-CB040B-00	4	500
QJD-CB030A-00	3	505
QJD-CB080A-00	8	500
QJD-CB080B-00	8	500

Dimensions

型号	H (mm)	D1 (mm)	D2 (mm)	D3 (mm)	W (mm)	L1 (mm)	L2 (mm)
QJD-CB040B-00	612	/	φ16.5	φ28	/	117	104
QJD-CB030A-00	655	φ16.5	φ16.5	φ28	22	115	104
QJD-CB080A-00	660	φ16.5	φ16.5	φ30	22	117	109
QJD-CB080B-00	660	φ16.5	φ16.5	φ30	22	125	115

Plunger pump installation instructions

TROUBLESHOOTING

Symptom	Possible Causes	Corrective Action
Jack will no load	Release valve not tightly closed overload condition Air supply in adequate	Ensure release valve tightly clos Remedy overload condition Ensure adequate air supply
Jack bleeds off after lift	Release valve not tightly closed Overload condition Hydraulic unit malfunction	Ensure release valve tightly clos Remedy overload condition Contact seller
Jack will no lower after unloading	Reservoir overfilled Linkages binding	Drain fluid to proper level Clean and lubricate moving part
Poor lift performance	Fluid level low Air trapped in system	Ensure proper fluid level With 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

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

LONG RAM JACK

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

Model: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

NEED HELP? CONTACT US!

Structure composition

Model: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

Model: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

Models: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

Models: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST

ARTICULO No.	DESCRIPCION||CANTIDAD CANTIDAD		ARTICULO No.	DESCRIPCION
1	Cuerpo||de||la||valvula	1	12	Bola||de||acero||de||4||mm	1
2	Tornillo||cónico	2	13	Tapall superior	1

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

NEED HELP? CONTACT US!

Models: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST

Models: QJD-CB080B-00

Model: QJD-CB030A-00/QJD-CB080A-00

model	H(mm)	D1(mm)	D2(mm)	D3(mm)	W(mm)	L1(mm)	L2(mm)
QJD-CB040B-00	612	/	φ16,5 φ28	655	/	117	104
QJD-CB030A-00	φ16,5 φ16,5 φ28	660 φ16,5 φ16,5	φ16,5	22	115	104
QJD-CB080A-00	φ30 660 φ16,5 φ16,5 φ30	16,5 φ30		22	117	109
QJD-CB080B-00				22	125	115

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

NEED HELP? CONTACT US!

Models: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST

ITEM Nee.	OMSCHRIJVING HOEVEELHEID		ITEM Nee.	BESCHRIJVING	Hoeveelheid
1	Kleplicham	1	12	4mm stalen kogel	1
2	Conische schroef	2	13	Bovenste dop	1

Model: QJD-CB040B-00

Models: QJD-CB080B-00

Models: QJD-CB030A-00/QJD-CB080A-00

model	H(mm)	D1(mm)	D2	D3(mm)(mm)	IN(mm)	L1(mm)	L2(mm)
QJD-CB040B-00	612	/	y16,5	28 655	/	117	104
QJD-CB030A-00	y16,5	y16,5	y28	660 y16,5	22	115	104
QJD-CB080A-00	y30 660	y16,5	y16,5	y30	22	117	109
QJD-CB080B-00					22	125	115

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

MODEL: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

NEED HELP? CONTACT US!

Models: QJD-CB040B-00/QJD-CB030A-00/QJD-CB080A-00/QJD-CB080B-00

PARTS LIST