Kaeser M27 Compressor Filter Kit — order in Moldova

Kit contents

All three items are Italian-made equivalents, fully interchangeable with the original Kaeser part numbers in terms of mounting dimensions.

Exact dimensions (diameter, height, thread) for each component can be confirmed with the supplier at the time of order.

Design features

• TGO 517 oil filter — a spin-on type filter element (similar to an automotive oil filter), installed in the compressor block’s oil circuit, capturing wear particles and extending the service life of the screw pair.
• TGA 6159 air filter — made of pleated paper that increases filtration area within compact dimensions; installed on the compressor’s intake port.
• 2095165C separator — a multi-layer filter element installed in the compressor’s separator (oil) tank; manufactured in Italy, compatible with the mounting location of Kaeser M27-series compressors.
• Complete replacement set — all three components are matched to the same compressor model and share the same service interval, simplifying maintenance planning.

Installation and maintenance recommendations

1. Before replacement, fully stop the compressor, release system pressure, and let the oil cool down, to avoid burns when removing the oil filter and separator.
2. Start with the air filter — remove the housing, take out the old element, clean dust from the housing, and fit the new TGA 6159.
3. Replace the TGO 517 oil filter — unscrew the old element, check the seating of the new filter’s gasket, and tighten according to the manufacturer’s recommendations (typically hand-tight with a slight additional turn using a wrench, without excessive force).
4. Replace the 2095165C separator in the tank — keep in mind that some oil may remain in the old element when removed, so after installing the new separator, check the system’s oil level and top up if needed.
5. After replacing all three components, start the compressor and check all connections for oil and air leaks.
6. Record the replacement date and the compressor’s operating hours — this helps plan the next scheduled maintenance.

Why it matters to replace the filters as a set

The compressor’s oil filter, air filter, and separator work as one system: a clogged air filter increases load on the compression unit and speeds up oil contamination, a worn separator increases oil consumption and reduces compressed air cleanliness, and an old oil filter stops effectively protecting the screw pair from wear. Replacing just one of the three parts often doesn’t deliver the full benefit, which is why compressor manufacturers, including Kaeser, recommend replacing the entire set at once during scheduled maintenance.

Expert comment: when ordering a kit for a specific compressor model, it’s important to check not only model compatibility (Kaeser M27) but also the block’s serial number or year of manufacture — over a model’s lifecycle, the manufacturer may have changed the mounting dimensions of individual components.

Common maintenance mistakes

• Replacing only one component of the set (e.g., just the air filter) without considering the condition of the oil filter and separator — reduces the overall benefit of the maintenance.
• Skipping the oil top-up after separator replacement — running with a low oil level accelerates wear of the screw pair.
• Using non-original gaskets when replacing the oil filter — causes oil leaks.
• Installing the air filter without first cleaning old dust from the housing — the new filter loses throughput capacity faster.
• Not recording the replacement date and operating hours — makes it harder to plan the next maintenance cycle.

Practical use cases

• Scheduled maintenance of Kaeser M27 compressors at manufacturing facilities, auto service centres, and warehouse complexes.
• Overhaul and refurbishment of compressor equipment after extended operation.
• Building spare parts stock for service organisations maintaining a fleet of Kaeser compressors.
• Scheduled consumables replacement when a compressor moves to a new service interval (e.g., after an increase in production load).

Expert opinion

“A filter kit is where scheduled maintenance of any screw compressor should start. In Moldova, I always recommend customers replace the oil filter, air filter, and separator together rather than separately — it’s easier to track the service interval that way, and you avoid the situation where one worn component starts putting extra strain on the rest of the Kaeser M27’s system,” — Vitali Boluchevski, lead engineer at Acvatron SRL.

FAQ

Can the filters in this kit be replaced separately instead of all at once? Technically yes, but the compressor manufacturer and maintenance specialists recommend replacing all three components at the same time, since their wear is interconnected.

Is this kit suitable only for the Kaeser M27 compressor? The kit is matched to the Kaeser M27 model; for use with other models, it’s recommended to confirm compatibility with the supplier beforehand.

Do I need to top up the oil after replacing the separator? Yes, some oil remains in the removed separator, so it’s recommended to check the compressor’s oil level after installing the new component.

How often should the filter kit be replaced? The interval is set by the compressor manufacturer’s schedule and operating conditions (intensity of use, dust levels at the site) — check your compressor’s service manual for the exact interval.

Which country is the separator in this kit made in? The 2095165C separator is manufactured in Italy.

Which original Kaeser part numbers do these kit components correspond to? The TGO 517 oil filter is the equivalent of original part number 634620, the TGA 6159 air filter corresponds to 641630, and the 2095165C separator corresponds to 637921.