•  The gears are helical. Supply pump gear is combined with a scissors gear.

•  The scissors gear, through the force of the scissors gear spring, prevents the teeth of the supply pump gear from moving back and forth (backlash) between the teeth of the No.2 idler gear, with which the supply pump gear is meshed, and thus reduces gear noise.

•  When removing the supply pump gear, fix the scissors gear to the supply pump gear using a lock bolt (M6 x 1.0, length under the bolt head is approximately 10 mm {0.63 in} to prevent the scissors gear from rotating under the spring force.