TM 9-2520-246-34-1 2-19. WEAR LIMIT INSPECTION (MODEL T-136-21). The following the minimum and maximum wear limits for each subassembly to which may be worn before a new part is needed. a. Front Output Shaft Assembly. FRAME 1 paragraphs give a part or parts NOTE Readings must be within limits given in table 2-38. If read- ings are not within given limits, throw away part and get a new one. 1. Measure front output shaft diameter (1) and diameter (2). 2. Measure width of key (3). 3. Measure width of front output shaft keyway (4). 4. Measure inner race outside diameter (5) and inside diameter (6). 5. Measure width of inner race keyway (7). 6. Measure rear output shaft bore (8). GO TO FRAME 2 Index Number 1 2 3 4 5 6 7 8 Table 2-38. Front Output Shaft Wear Limits Item/Point of Measurement Output shaft inside diameter Output shaft outside diameter Key width Output shaft keyway width Inner race outside diameter Inner race bore Inner race keyway width Rear output shaft bore Size and Fit of New Parts (inches) 1.8096 to 1.8106 2.0028 to 2.0036 0.3750 to 0.3760 0.3736 to 0.3756 3.0875 to 3.0885 2.0028 to 2.0040 0.3740 to 0.3760 1.8126 to 1.8136 Wear Limit (inches) 1.8087 2.0023 None None 3.0865 2.0045 0.3780 1.8142 2-198