TM 9-2520-246-34-1 FRAME 3 1. 2. 3. NOTE Readings must be within limits given in table 2-2. The letter L indicates a loose fit. If readings are not within given limits, throw away both gears and get new ones. Some gears on the countershaft cannot be taken off. If these gears are damaged, throw away countershaft and get a new one. Slide first-reverse gear (1) forward to mesh with countershaft first gear (2). Measure backlash between two gears. Slide first-reverse gear (1) back to mesh with reverse idler gear (3). Measure backlash between two gears. Slide first-reverse gear forward so that it is not meshed with any gears. Measure backlash between second-reverse gear (4) and reverse idler gear (5). END OF TASK Table 2-2. Transmission Reverse Speed Backlash Wear Limits Index Number 1 and 2 1 and 3 4 and 5 Item/Point of Measurement First-reverse gear to counter- shaft first gear First-reverse gear to reverse idler gear Second-reverse gear to reverse idler gear Size and Fit of New Parts (inches) 0.008L to 0.014L 0.008L to 0.0146L 0.006L to 0.012L Wear Limit (inches) 0.019L 0.019L O.019L 2-5