TM 9-2520-246-34-1 d. Reverse Idler Gear Assembly. FRAME 1 NOTE Readings must be within limits given in table 2-13. If readings are not within given limits, throw away part and get a new one. 1. Measure diameter of shaft (1). 2. Measure thickness of two thrust washers (2). 3. Measure inside diameter (3) and outside diameter (4) of two bearings. 4. Measure gear bore (5). GO TO FRAME 2 Table 2-13. Reverse Idler Gear Assembly Wear Limits Index Number 1 2 3 4 5 Item/Point of Measurement Shaft diameter Thrust washer thickness Bearing inside diameter Bearing outside diameter Gear bore Size and Fit of New Parts (inches) 1.010 to 1.015 0.091 to 0.093 1.0155 1.5000 1.5005 to 1.5015 Wear Limit (inches) 0.0015 None None None 0.007 2-59