IBM 6500-V5P Maintenance Manual - Page 387
Tractor Belt Tension Adjustment
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Tractor Belt Tension Adjustment Tractor Belt Tension Adjustment IMPORTANT ATTENTION Print compression can be reduced by adjusting the tension of the tractor belts. The procedure below removes the slack that might occur in some tractors. Only do this procedure when the user reports that the first print line of forms is compressed and only after adjusting the dynamic paper tension (page 384). Always adjust both tractors. 1. Prepare the printer for maintenance (page 313). 2. Adjust the dynamic paper tension (page 384). 3. Carefully note the initial position of the adjustment screws. (See Figure 34.) Adjust tractors only ONE detent at a time. Over-tightening a tractor belt can cause other paper feed problems and result in premature wear in the tractors. 4. On the inner side of the left tractor, use a Torx T-10 driver to rotate the adjustment screw clockwise one detent to increase tension. On the inner side of the right tractor, use a Torx T-10 driver to rotate the adjustment screw counter-clockwise one detent to increase tension. (See Figure 34.) 5. Load paper, run a print test, and check for first line compression. 6. If compression still occurs, rotate the adjustment screws one more detent and test again. 7. If compression is not improved after adjusting the tension by two detents, return the adjustment screws to the initial positions you noted in step 3 and call support for further assistance. 8. Return the printer to normal operation (page 314). 387
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