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Examples of improper applications are:
• Low voltage: inadequate power source can damage electrical components
• High amperage draw: bad grounds or excessive amperage can burn the electrical components such as the starter, coils, motor and/or hand control
• Oil quality: contaminated oil or incompatible oil can damage pumping system, valves and the actuator. The type of oil used, and the verification of oil quality is the responsibility of the end user. Eagle Hydraulic recommends: ISO 32, filtered to 20 microns or better.
• Environment: the performance of your power unit can be affected by the environment. For example, if the power unit is not carefully protected or if the environment is salty, acidic, very cold, very hot, etc.
vevor hydraulic pump troubleshooting
Please use this guide to easily troubleshoot your Eagle Hydraulic power unit. It is recommended to go through each step,as this guide has been created in a logical sequence. If followed from top to bottom, you should go through all possible symptoms and should be able to find the problem.
The most common situation you can easily fix:
Problem: If you have an option 2 and you are not able to build pressure
Cause: The manual override of the 2-way poppet valve has probably been left open
How to fix it: Push down on the poppet valve and turn clockwise until it locks. The manual override is now closed, and it should operate properly.
The following table lists the most common problem you can encounter and what you should verify in each case.
|SYMPTOM OR PROBLEM||VERIFICATION TO DO|
|The motor is not running||• Check the connection from your power supply to the DC motor.|
• Check the power to the solenoid starter.
|Solenoid starter clicks but the motor does not start||• Check for loose wire from solenoid starter to DC motor.|
• Make sure you have the right gauge of wire from your battery to the unit.
• Check for cracked terminal on solenoid starter, if so, replace start solenoid.
• If it’s an older unit, check for rust buildup inside DC motor.
|Motor runs, but unit will not build hydraulic pressure||• Solenoid valve manual override is open |
Some of our units (Option 2) are equipped with a two-position valve with a mechanical manual override. With stem of valve pointing up, push down and turn clockwise until stem won’t turn. The manual override is now closed. Retry unit.
• Gear pump might not be priming
Loosen the relief valve, replace relief valve (torque to 22Nm) and retry unit.
|Power unit won’t lift load||• Check fluid level|
If there is not enough oil in the unit, you will not be able to operate the actuator.
• Gear pump might not be priming.
Loosen the relief valve, replace relief valve (torque to 22Nm) and retry unit.
• Air being introduced in system
If air is being introduced in the system, the gear pump might have some difficulty priming. Listen for distinctive cavitation soundsfrom pump and verify all hydraulic hoses and fittings for proper sealing.
|Cylinder won’t hold in place (drift down)||• Check valve on unit might leak|
Remove check valve, wash with brake cleaner or varsol, air blow to clean out any debris, reinstall check valve (torque to 22Nm) and retry unit.
|Cylinder won’t retract||• If unit is an Option 2|
The poppet on the two-way solenoid valve might have jammed in place. Replace valve (torque to 22Nm) and retry unit.
• If unit is an Option 3
If your unit has a manual activation valve, on the return port there is an orifice to prevent cylinder to come down too quickly.Orifice might have some debris.
• If unit is an Option 12 or 24
Verify that the solenoid starter operates the directional valve. Operate actuator back and forth, and make sure it works in both directions. If only one direction is working, replace directional valve.
|The motor will not stop running||• Solenoid starter stays on|
Low battery or poor ground connection has caused the solenoid starter to weld on. Replace solenoid starter and check battery and ground.
|Excessive heat from unit||• Low battery or poor ground|
A bad electrical ground or poor battery performance will cause the motor to generate more heat. Verify battery and ground for good performance.
• Relief valve remains open
If the relief valve has been misadjusted or a debris has stuck in it, this will generate a lot of heat in the oil. Remove relief valve, wash with brake cleaner or varsol, air blow to clean out any debris, reinstall (torque to 22Nm).
• Excessive heat from electrical motor
A bad electrical ground or poor battery performance will cause motor to generate more heat. Verify battery and ground for good performance. If these two points have been verified and motor still generates heat, do not overrun the motor. Consult Eagle Hydraulic.
If you encounter problems that cannot be solved by yourself, please contact our professional engineers
vevor hydraulic pump troubleshooting Video
This video is a step by step process to help you troubleshoot your vevor hydraulic pump. I have been using this method for several years as well as with other experienced mechanics and it has worked great. If you do not know whether your pump will be repairable continue reading to see how you can undo the damage if the unit was drained.
vevor hydraulic pump wiring diagram
We hope you find the wiring diagram for your vevor hydraulic pump below. It will show you how to connect your pump to a power source, and how to connect your pump to a tank.
The first step is connecting the wires from your power source to the pump. These wires should be connected as follows:
-Brown wire: Connected to the pump’s 12V terminal
-Black wire: Connected to the pump’s GND terminal
vevor hydraulic pump troubleshooting FAQ
vevor hydraulic pump manual can be found there?
Yes, the vevor hydraulic pump manual can be found there.
vevor hydraulic pump manual
VEVOR Hydraulic Pump instructions?
-Never use any fluids or lubricants other than those specified for the VEVOR Hydraulic Pump. Use of other fluids or lubricants may cause damage to the VEVOR Hydraulic Pump.
-The VEVOR Hydraulic Pump is not designed for use with air, nitrogen, CO2 or any other gas. Use of these gases in the VEVOR Hydraulic Pump may cause damage to the pump components and voids all warranties.
-Do not operate the VEVOR Hydraulic Pump under conditions where it could be subjected to temperatures below freezing, as this may cause damage to internal seals and result in leakage.
-Always keep the VEVOR Hydraulic Pump clean and dry when not in use. Dirt, moisture and foreign objects can cause premature wear on moving parts which will void all warranties.
-Before operating your VEVOR Hydraulic Pump for the first time, or if it has been stored for an extended period of time, run it until warm (approx. 10 minutes) before connecting it to your application and attaching hoses. This is necessary because there are no lubricants inside the unit at rest; only during operation does oil flow through the internal passages of the pump.
-Running it until warm will pre-lubricate the unit and ensure proper operation when you begin using it. -Always use clean, fresh water in your VEVOR Hydraulic Pump to help prevent corrosion from occurring inside the unit.
Which hydraulic oil does the VEVOR Hydraulic Pump use?
We recommend using a synthetic hydraulic fluid, such as Mobil SHC™ 68 or Amsoil Z-Rod Oil. These fluids are designed to provide superior lubrication and corrosion protection for your hydraulic pump. We also recommend changing the fluid every 2 years to help prevent sludge and varnish build-up that can lead to premature wear of your hydraulic pump.
In addition to the fluid, we recommend using high quality filters on your hydraulic system. This will ensure that only clean hydraulic fluid goes into your hydraulic pump and through the rest of your hydraulic lines and fittings.
So, you have a hydraulic pump that appears to be broken, is making grinding noises, or has developed leaks. Don’t worry, you’re not alone. In fact, hydraulic pumps have a tendency to break down at the most inopportune times and require hours of repair time if you don’t have the correct parts on hand.