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4039-1XX
Fuser Drive Gear Backlash
Fuser drive gear backlash is adjusted so that when gear #2 is held still, there is a slight amount of backlash in the fuser gear. Print quality can be affected if the gears are too tight. 1. Remove the fuser cover. 2. Locate gear #2. It is the white adjustable gear mounted to the side frame below the fuser gear. 3. Rotate the adjustable gear in one direction to check for backlash. To adjust backlash: 1. Loosen the nut on the idler stud. 2. Move the idler stud downward in its slot. 3. Insert a 0.95 mm (.037) feeler gage between the gear shoulders from the front of the machine. You may need to use an angled or very small feeler gauge. 4. With the nut snug but not tight, tap the idler upward until the gage is snug between the gear shoulders. 5. Tighten the locking nut. 6. Check the clearance again; tightening may have altered the adjustment. Be sure the fuser gear can be rotated slightly when gear #2 is held still.
