TM 9-2520-246-34 Figure 5-18. Repair and Replacement Standard Points of Measurement for Front Output Shaft and Related Parts. Table 5-3. Repair and Replacement Standard Points of Measurement for Front Output Shaft and Related parts — Model WN-7-28 Fig. Ref Point of Measurement Size and Fit Wear Limits No. Letter of New Parts 5-18 A Outside diameter of rear bearing 2.8346 (*) Diameter of bearing bore in housing 2.8346-2.8356 0.001 Fit of bearing in housing bore 0.0000L-0.0010L (*) 5-18 B Inside diameter of rear bearing 1.3780 (*) 5-18 C Thickness of thrust washer 0.112-0.124 0.006 5-18 D Inside diameter of high-speed gear 1.4060-1.4065 5-18 E Diameter of output shaft 1.3785-1.3795 (*) 5-18 B-E Fit of bearing on shaft 0.0005T-0.0015T (*) 5-18 F Diameter of output shaft 1.3985-1.4000 0.003 5-18 D-F Fit of gear on shaft 0.006L-0.008L 5-18 H-G Fit of gear to shaft and gear splines 0.004L-0.007L 0.011 5-18 J Outside diameter of front bearing 2.8346 (*) Diameter of bearing bore in housing 2.8346-2.8356 0.0008 Fit of bearing in housing bore 0.0000L-0.0010L 0.0018L 5-18 K Inside diameter of front bearing 1.3780 (*) 5-18 L Sliding gear to input low 5-17 F speed gear (backlash) 0.008L-0.011L 0.017L 5-18 L Sliding gear to reverse 5-16 D gear (backlash) 0.008L-0.011L 0.017L 5-18 M Diameter of shaft 1.3785-1.3795 (*) 5-18 K-M Fit of bearing on shaft 0.005T-0.0015T (*) 5-18 N High-speed gear to input 5-17 G gear (backlash) 0.0066-0.009L 0.018L 5-18 O-H Fit of gear splines to gear splines 0.004L-0.007L 5-10