TM 9-2320-209-34-2-2 (4) Drive pinion. 1. Working through inspection hole (1), check that front edge of intermediate case second reduction drive pinion (2) is alined with front edge of boring case rack drive gear (3) as shown. 2. If gears are not alined, note the way they are alined. IF GEARS ARE NOT ALINED, GO TO FRAME 2. IF GEARS ARE ALINED, GO TO FRAME 3 17-562