Why is filter KC195 rattling before fitment?
When empty, a valve located at the bottom of the MAHLE Original and Knecht Filter KC195 filter, which is fitted to numerous diesel powered Alfa Romeo, FIAT, PSA and LDV vehicles is free to move up and down within a cage.This valve is designed for water drainage and location of the water sensor (see below).
If the filter is shaken, the valve will be heard moving in the longitudinal direction and to a small degree, laterally.It is possible that the retaining ring at the top of the cage could become damaged in transit and dislodged (see below). This will result in a large amount of rattling, in both lateral and longitudinal directions.
Noisy filter
With the valve dislodged, operation of the water drain and installation of the sensor may be impaired. The filter may also become noisy during the operation of the fuel system.
If you’re concerned about the amount of rattling in the lateral direction, it’s possible to check the valve is still located by inspecting the drain port on the bottom of the filter. The white valve should be visible if correctly located (see below).
