TM 9-2320-209-34-2-1 FRAME 13 1. Using bearing preload tester, pn 3475922, (1), wrap cable (2) around helical drive pinion (3). 2. Pull tester (1) and note reading on scale. Reading for old bearings should 4 to 8 pound-inches. Reading for new bearings should be 12 to 18 pound- inches. IF READING IS NOT WITHIN LIMITS GIVEN, GO TO FRAME 14. IF READING IS WITHIN LIMITS GIVEN, GO TO FRAME 15 be 10-81