REAR ASSEMBLY

550 509 09 REAR ASSEMBLY Mounted on top of a hydraulic tank or gearbox, this breather assembly allows the system to equalize pressure as fluid levels and temperatures change. Its main function is to filter the air drawn into the reservoir, trapping abrasive dust and water particles before they can enter the sensitive hydraulic circuit and cause wear.

Protecting the system from contamination is essential for maintaining drilling performance. A faulty or clogged breather can lead to pressure or vacuum buildup, damaging seals and causing oil leaks. More importantly, allowing dirt into the oil accelerates the wear of pumps, valves, and the drifter itself, leading to reduced efficiency and unexpected downtime.

Check the breather for visible dirt buildup or damage during routine inspections. If you notice oil weeping from tank seals or hear a rush of air when opening a filler cap, the breather is likely blocked. Replacement is straightforward and should be part of your regular service schedule to prevent costly contamination-related failures.