Document ID: chunk:federal_register_of_legislation:F2015L02109:body:0:p21
Version: federal_register_of_legislation:F2015L02109
Segment Type: other
Provision Reference: 
Character Range: 63214–66371

of an adjustable seat cushion
6.1.                              A Seat Cushion Reference Point (SCRP) shall be used to measure and record adjustments made to seat cushions equipped with controls for longitudinal (fore/aft) and/or vertical seat cushion adjustment.
6.2.                              The SCRP should be located on a part of the seat cushion side structure or support frame which is fixed in location with respect to the seat cushion.
6.3.                              A seat cushion reference line shall be used to measure and record angular adjustments made to pitch adjustable seat cushions.
6.4.                              For pitch adjustable seat cushions, the SCRP location should be set as close as possible to the axis of rotation (e.g. towards the rear) of the seat cushion support structure.
6.5.                              The adjustment position of the seat cushion base on which the dummy is to be installed shall be determined by sequential completion (where applicable to the seat design) of the steps outlined in paragraphs 6.6. to 6.13. of this annex below; with the test vehicle at the vehicle measuring attitude established in accordance with paragraph 3. of this annex above.
6.6.                              Use the seat control that primarily moves the seat vertically to adjust the SCRP to the uppermost vertical location.
6.7.                              Use the seat control that primarily moves the seat fore/aft to adjust the SCRP to the rearmost location.
6.8.                              Determine and record (by measuring the seat cushion reference line angle), the full angular adjustment range of the seat cushion pitch and using only the control(s) that primarily adjust(s) the cushion pitch, set the cushion pitch as close as possible to the mid-angle.
6.9.                              Use the seat control that primarily moves the seat vertically to adjust the SCRP to the lowest vertical location. Verify that the seat cushion is still at the rearmost seat track location.  Record the longitudinal (X-axis) position of the SCRP in the vehicle reference coordinate system.
6.10.                          Use the seat control that primarily moves the seat fore/aft to adjust the SCRP to the forward most location. Record the longitudinal (X-axis) position of the SCRP in the vehicle reference coordinate system.
6.11.                          Determine the vehicle X-axis position of a vertical transverse plane 20 mm rearward of a point midway between the longitudinal (X-axis) positions recorded in accordance with paragraphs 6.9. and 6.10. above (i.e. 20 mm rearward of the mid-track position).
6.12.                          Use the seat control that primarily moves the seat fore/aft to adjust the SCRP to the longitudinal (X-axis) position determined in accordance with paragraph 6.11. (‑0/+2 mm), or, if this is not possible, the first available fore/aft adjustment position rearward of the position determined in accordance with paragraph 6.11.
6.13.                          Record the longitudinal (X-axis) position of the SCRP in the vehicle reference coordinate system and measure the seat