ISO 7654 pdf download

ISO 7654 pdf download.Road vehicles — Spin-on fuel filters for diesel engines — Mounting and connecting dimensions 1 Scope This international Standard specifies the mounting and connecting dimensions for spin-on fuel filters, with and without an inner sealing, to be used with diesel (compression-ignition) engines. The preferred design of spin-on fuel filters are those without an inner sealing, and they are specified in clause 2. The alternative filter design is specified in annex A and should be used if an inner sealing is required. The corresponding filter heads are specified in ISO 731 0, ISO 731 1 and ISO 7577 (see annex B). 2 Dimensions and tolerances Details not specified in this International Standard are left to the manufacturer’s choice. 2.1 The dimensions and tolerances of the filter shall be in accordance with figure 1 . The shape of the sealing ring shown in X shall be such that effective sealing is ensured. The dimensions of the compressed sealing ring shall be within the sealing surface shown in figure 2. The dimension 0,5 mm min. shown in X shall be measured after tightening the filter in accordance with the filter manufacturer’s recommendations. In cases where moulded sealing rings are used, this dimension may be 0; i.e., metal contact between the sealing surface to which the filter is attached and the face of the spin-on filter is allowed. This special design shall be identified on the filter with necessary fitting instructions. 2.2 The dimensions and tolerances of the sealing surface and connecting thread shall be in accordance with figure 2. 3 Marking Spin-on fuel filters may optionally be marked as follows: a) designation of filter type: diesel fuel filter; b) size of connecting thread, for example, M1 6 ¥ 1 ,5; c) instructions for installation. The appearance and position of this marking on the filter body are left to the discretion of the manufacturer. In cases where an additional sealing ring (inner sealing) at the connecting thread is required, the alternative design shown in figure A.1 and A.2 should be used by mutual agreement between manufacturer and user. All other dimensions and specifications not shown in figure A.1 and A.2 are in accordance with figures 1 and 2 respectively. The free height of sealing ring shown in figure A.1 shall be at the discretion of the manufacturer, depending on material and shape. The shape of the sealing rings shall be such...