RESTRICTION INDICATOR

The present disclosure relates to a restriction indicator (20) for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing (21) divided into first (29) and second (31) chambers by a diaphragm (28). A signal member (34) is connected to the diaphragm. The signal member (34) is moveable along an axis between a reset position and a first indicator position, and defines an axial opening within which a first retaining shoulder (88) is located. A guide member (40) is provided for guiding the signal member (34) as the signal member is moved between the reset position and the first axial position. A retaining member (44) is provided for retaining the signal member (34) in the first indicator position. The retaining member (44) extends within the axial opening of the signal member (34) and includes at least two fingers (46) that project radially outward from the axis. The fingers (46) are configured to engage the first retaining shoulder (88) to retain the signal member (34) in the first indicator position. The restriction indicator further includes a reset button (48) for deflecting the fingers (46) radially inward to disengage the fingers (46) from the first retaining shoulder (88) thereby allowing the signal member (34) to be returned to the reset position. The reset button (48) includes a portion that extends within the axial opening of the signal member (34) between the retaining member (44) and the signal member (34). L'invention concerne un indicateur d'encrassement (20) destiné à un système de filtrage d'air d'un moteur à combustion interne. Cet indicateur comprend un logement (21) divisé par un diaphragme (28) en une première (29) et une seconde (31) chambre. Un élément de signalisation (34) est relié au diaphragme, il peut se déplacer le long d'un axe, entre une position de réarmement et une première position d'indication, et il définit une ouverture axiale dans laquelle on a placé un premier épaulement de retenue (88). Un dispositif de guidage (40) sert à guider l'élément de signalisation (34) lorsque ce dernier se déplace entre la position de réarmement et la première position axiale. Un organe de rétention (44) sert à retenir l'élément de signalisation (34) dans la première position d'indication, il s'étend dans l'ouverture axiale de l'élément de signalisation (34) et comprend au moins deux branches (46) saillant radialement vers l'extérieur à partir de l'axe. Ces branches (46) sont conçues pour entrer en con