RoadMachinerySparesRoad roller hydraulics
When should a BOMAG roller hydraulic filter be changed?
The filter change interval belongs to the exact roller model and hydraulic system. A blocked-filter warning, contaminated oil or a repair that opened the circuit may require attention before a routine service date. Record the reason for the change so the next filter is not treated as the cause of an unrelated pressure fault.
Before removing the element
Follow the BOMAG service procedure to isolate and depressurize the circuit. Identify the housing and record the element number, seal arrangement and any bypass indication. Photograph the installed assembly. Similar-looking filters may differ in dimensions or filtration specification, so an outside diameter alone is insufficient for matching.
What the removed filter can tell you
- Unexpected debris should prompt an inspection of the hydraulic system, not just another filter order.
- A damaged seal calls for a check of its groove and housing.
- An unreadable part number should be resolved using the machine serial range and filter assembly drawing.
After the change
Use the specified element and seals, then perform the manufacturer's refill, bleed and leak-check steps. Record the filter reference, operating hours and reason for replacement. If a warning returns quickly, diagnose the system rather than shortening the interval by guesswork.
Confirm machine-specific limits and procedures with the appropriate service documentation.