How to change the oil and filter on a SOGEVAC SV65 B oil-sealed vacuum pump January, 2025
Oil and filter change on your oil sealed vacuum pump
Changing the oil and filter on your vacuum pump is a simple procedure and keeps your machine running smoothly. On this page we will guide you through how to perform an oil and filter replacement on your Leybold SOGEVAC SV65 B vacuum pump.
This tutorial should be used in combination with the pump instruction manual (300267596).
Why is vacuum pump maintenance important?
By changing the oil in your vacuum pump, you help to clean out it’s ‘arteries.’ It is important that the oil is pure and clean, so that it can support the high performance of your vacuum pump and protect it against damage.
Over time the vacuum oil gets contaminated with particles and moisture, which reduces its lubricating properties and can cause increased wear on the vacuum pump’s internal components. Simply by regularly changing the oil and filter, the harmful build-up in the system is removed, along with the risk of pump inefficiency and/or breakdown.
Before you begin service make sure to switch off the electrical power supply of the pump system before any interaction. This will give the pump time to cool to a safe handling temperature.
Tools needed for this service:
Strap wrench
Allen key set
12mm spanner
Syringe
Spare kits needed for this service:
| Spare part kit name | SV65 B (1) | SV65 B (1) ATEX | AV65 B (1) PFPE |
| Minor maintenance kit | EK9604M | EK9604AM | EK9604PM |
Follow along with the video tutorial
Part one: disassembly
- How to remove the oil and filter from a vacuum pump.
- First remove the oil filler plug using a 12mm Allen key.
- Place a tray with a minimum volume of 1.5L underneath the drain plug/valve.
- If your vacuum pump has a drain plug:
a. Remove the oil drain plug using a 12mm Allen key.
b. Drain the oil from the vacuum pump into the tray. - If your vacuum pump has a drain valve:
a. Remove the threaded cap to attach the drain valve with the hose with a 12mm Allen key. (Note: the hose will come with the vacuum pump.)
b. Drain the oil from the vacuum pump into the tray. - Now unscrew the bolts to remove the exhaust flange. Use a 6mm Allen key to do so.
- Remove the exhaust flange and exhaust filter.
- Remove the O-ring.
- Use a syringe to remove any excess oil in the vacuum pump casing.
- Disassemble the exhaust filter.
- Next, place a tray with a minimum volume of 1.5L underneath the oil filer.
- Remove the oil filter using the strap wrench and pour the oil from the filter into the tray.
- Clean the excess oil with a cloth and cleaning liquid.
Part two: assembly
How to add oil and insert a filter into a vacuum pump.
- Begin by assembling the exhaust filter and flange. The threaded styd of the filter can only protrude a maximum of 1mm above the nut.
- Apply vacuum grease to the filter.
- Next apply lubricant to the exhaust filter O-ring and fit it back onto place on the pump.
- Insert the exhaust filter. Use a 6mm Allen key and 23Nm torque to tighten the screws and secure the filter.
- Apply oil to the oil filter and insert it into the vacuum pump.
- Apply vacuum grease to the oil drain plug O-ring.
- Fit the oil drain plug back into plug, using a 12mm Allen key.
- Fill the vacuum with about 1 to 1.5 L of oil, until the oil level reaches ‘max.’ You can read this on the oil level sight glass.
- Put the oil filler plug back on the pump and secure into place using a 12mm Allen key.
You have now completed an oil and filter change on your SOGEVAC vacuum pump. If you need any service support for you vacuum pump, contact us, or click here to explore our service solutions.
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