TM 9--2815--247--34 0096 00--13 MECHANICAL DRIVE HOUSING AND ASSOCIATED PARTS (FAN TOWER, DAMPER END) REPAIR -- CONTINUED 0096 00 Inspection -- Continued 16. Measure inside diameter (61) of bearing unit housing (30). Replace bearing unit housing if not within the following limits. 17. Measure inside diameter (62) of ball bearing (31). Replace ball bearing if not within the following limits. 18. Measure outside diameter (63) of ball bearing (31). Replace ball bearing if not within the following limits. REF NO. POINT OF MEASUREMENT SIZES AND FITS OF NEW PART inches (mm) WEAR LIMITS 61 Inside diameter of bearing unit housing 3.1495 (79.9973) 3.1501 (80.0125) 3.1504 (80.0201) 62 Inside diameter of ball bearing 1.5743 (39.9872) 1.5748 (39.9999) none 63 Outside diameter of ball bearing 3.1491 (79.9871) 3.1496 (79.9998) none Figure 54 31 61 62 63 30