TM 9-2520-246-34-1 2-36. WEAR LIMIT INSPECTION. The following paragraph gives instructions for checking the minimum and maximum wear limits to which a part or parts may be worn before a new part is needed. FRAME 1 NOTE Readings must be within limits given in table 2-66. The letter L indicates a loose fit and the letter T indicates a tight fit. If readings are not within given limits, throw away part and get a new one. 1. Measure inside diameter of two bearings (1). 2. Measure shaft outside diameter (2). 3. Measure fit of bearings (1) on shaft diameter (2). 4. Measure inside diameter of gear (3). 5. Measure fit of gear (3) on shaft diameter (2). 6. Measure output shaft cam section (4). END OF TASK Index Number 1 2 1 and 2 3 3 and 2 4 Table 2-66. Output Shaft Wear Limits Item/Point of Measurement Bearing inside diameters Shaft outside diameters Fit of bearings on shaft Gear inside diameter Fit of gear on shaft Cam section of shaft Size and Fit of New Parts (inches) 1.688 1.6885 to 1.6895 0.005 to 0.0015T 1.6900 to 1.6915 0.0005L to 0.003L 1.685 to 1.690 Wear Limit (inches) None None None None None None 2-362