TM 9-2520-246-34 Figure 3-50. Repair and Replacement Standard Points of Measurement for Transmission Reverse Idler Gear and Shaft Assembly Table 3-4. Repair and Replacement Standard Points of Measurement for Transmission Reverse Idler Gear and Shaft Assembly Fig. Ref Point of Measurement Size and Fit No. Letter Wear Limits of New Parts 3-50 A Outside diameter of shaft 1.010-1.015 .0015 3-50 B Inside diameter of bearing 1.0155 (*) 3-50 A-B Fit of bearing on shaft .0005L-.0015L (*) 3-50 C Outside diameter of bearing 1.5000 (*) 3-50 D Inside diameter of gear 1.5005-1.5015 .007 3-50 C-D Fit of bearing in gear .0005L-0.0015L .010 3-50 E Thickness of thrust washer 0.091-0.093 # 3-50 F Reverse idler gear to countershaft 3-49 F second-reverse gear (backlash) 0.006-0.012L .016 3-50 G Reverse idler gear to mainshaft 3-48 T first-reverse gear (backlash) 0.008L-0.014L .019 # Replace when bronze is partially or completely worn off. 3-25 (3-26 blank)