SOGEVAC SV55-70 BI² vacuum pump oil and filter replacement June, 2025
SOGEVAC Vacuum Pump Oil and Filter Replacement
Simple oil and filter changes to keep your vacuum pump performing like a pro!
This page explains how to change the oil and filter on your Leybold SOGEVAC SV55-70 BI² vacuum pump, helping maintain its performance.
This tutorial should be used alongside the instruction manual (301256888).
Why is regular vacuum pump maintenance important?
Struggling with the vacuum parts, increased noise, or bad vacuum performance with your oil-sealed rotary vane pump? Most of these problems are caused and can easily be prevented by a regular oil and filter change. Pure and clean oil supports the high functionality of the vacuum pump and safeguards it against potential damage.
Over time, vacuum oil can become contaminated with particles and moisture, diminishing its lubricating properties and leading to increased wear on the internal components of the vacuum pump. By routinely changing the oil and filter, you effectively remove harmful build-up within the system, thereby reducing the risk of pump inefficiency or failure.
Why is it important to change the vacuum oil?
Oil changes its properties over time if not properly stored or sealed. So, a pump may require an oil change even if it has not been used for a long period. Keep your vacuum pump and your production running smoothly with Leybold vacuum pump oil.
Find the right oil for your pump and application with our Oil Finder
If you find yourself struggling or are unsure about performing the services yourself, our field service team is here to bring the solution to you. Reach out for support, and we'll ensure you get the help you need.
Servicing your SOGEVAC 55-70 BI² vacuum pump
Tools needed for this service:
- 12mm Allen key
- 5mm Allen key
- Torque wrench
- 12mm Hex bit socket for the torque wrench
- 5mm hex bit socket for the torque wrench
Spare kits needed for this service:
| Spare kit name | SV55-70 BI2 |
| Minor maintenance kit | EK103355M |
| Vacuum grease 850 (for pumps with standard oil) | GM6528145 |
| Vacuum grease 843 (for pumps with PFPE oil) | GM6528627 |
LVO 420, 1 Liter
|
L42001 |
| LVO 702, 1 Liter | L70201 |
You can find information on the oil type and maintenance kit on your vacuum pump’s service sticker.
Missing something important?
Don’t have the right spare kit? Visit our eShop and order all the tools you need for service.
Consider the Parts Care ServicePlan™ which organizes the regular delivery of spare parts and kits right to your doorstep, so you always have the right tools when you need them.
What to know before you start vacuum pump maintenance
Ensuring safety is essential. Prior to performing any service, it is important to take proper safety precautions, such as turning off the electrical power supply of the pump system before any interaction. This allows the pump to cool down to a safe handling temperature.
Follow along with the video tutorial
Part One: Disassembly
Oil and filter exchange disassembly
- Begin by removing the drain plug.
- Now fit the drain tap with a pipe adapter and a pipe.
- Drain the oil from the oil casing.
- Remove the pipe adapter and the pipe.
- Now use a 5mm Allen key to unscrew the oil casing cover.
- Remove the oil casing cover and the oil filter.
- Place the casing cover in a tray.
- Use a 12mm Allen key to remove the plug from the casing cover.
- Now separate the casing cover from the filter. The filter can be disposed of. Try to do so without touching the filter.
- Focusing back on the vacuum pump, remove the O-ring from the internal wall.
Part two: Assembly
Oil and filter exchange assembly
- Start by lubricating the O-ring with vacuum grease.
- Now mount the O-ring on the internal wall of the vacuum pump.
- Next, lubricate the P-rings with vacuum pump oil.
- Mount the new oil filter. Make sure to check that you have both O-rings before you begin this assembly process.
- Now press the filter top to fit it into place.
- The oil casing cover can now be secured in place. Use a torque wrench with a 5mm hex bit socket, and 9.5 Nm of torque.
- Fit the oil plug into place.
- Now fill the vacuum pump back up with oil, until it reaches between three-quarters and the upper level of the oil sight glass (this requires approximately 1 liter of oil).
- Lubricate the O-ring with vacuum grease.
- Now fit the oil casing cover plug with its O-ring and secure into place using a torque wrench with a 12mm hex bit socket, and 4 Nm of torque.
You have successfully changed the oil and filter on your SOGEVAC 55-70 BI² vacuum pump. For service support, or vacuum pump repair, contact us or explore our services below.
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