TM 9--2815--247--34 0083 00--5 GENERATOR DRIVE MECHANISM REPAIR -- CONTINUED 0083 00 Inspection 1.   Measure inside diameter (26) of bearing bore in generator adapter (8). Replace generator adapter if not within the following limits. 2.   Measure outside diameter (27) on both ends of spur gear slip clutch (21). Replace spur gear slip clutch if not within the following limits. 3.   Measure inside diameter (28) of ball bearings (22 and 23). Replace ball bearings if not within the following limits. 4.   Measure outside diameter (29) of ball bearings (22 and 23). Replace ball bearings if not within the following lim- its. REF NO. POINT OF MEASUREMENT SIZES AND FITS OF NEW PARTS inches (mm) WEAR LIMITS 26 Inside diameter of bearing bore in generator adapter 2.8346 (71.9988) 2.8353 (72.0166) 2.8356 (72.0242) 27 Outside diameter of both ends of spur gear slip clutch 1.3781 (35.0037) 1.3785 (35.0139) 1.3779 (34.9986) 28 Inside diameter of ball bearings 1.3775 (34.9885) 1.3780 (35.0012) none 29 Outside diameter of ball bearings 2.8341 (71.9861) 2.8346 (71.9988) none Figure 29 26 8 23 27 21 27 28 29 22 29 28