TM 9--2815--247--34 0095 00--4 REAR FAN DRIVE AND ASSOCIATED PARTS REPAIR -- CONTINUED 0095 00 Inspection 1.   Measure inside diameter (21) of bearing unit housing (9). Replace bearing unit housing if not within the following limits. 2.   Measure inside diameter (22) of ball bearing (10). Replace ball bearing if not within the following limits. 3.   Measure outside diameter (23) of ball bearing (10). Replace ball bearing if not within the following limits. REF NO. POINT OF MEASUREMENT SIZES AND FITS OF NEW PART inches (mm) WEAR LIMITS 21 Inside diameter of bearing unit housing 3.1495 (79.997) 3.1501 (80.012) 3.1504 (80.020) 22 Inside diameter of ball bearing 1.5743 (39.987) 1.5748 (39.999) none 23 Outside diameter of ball bearing 3.1491 (79.987) 3.1496 (79.999) none Figure 53 22 23 21 9 10