3-13.Feed Mechanism; Direction - Brother RH-981A Service Manual

3-13. Feed mechanism
3-13-1. X direction
Adjusting the backlash between the driving gear and the idle gear
Note: Be sure to remove the motor support. Adjustment should be carried out with the driving gear and the idle
gear treated as a unit.
Adjust the backlash between the driving gear (1) and the idle gear (2) when they are engaged, using the weight of
pulse motor X (3) (as shown in the figure above).
Tighten the four bolts (4).
Adjusting the idle gear
Adjust the positions of the X racks and the idle gear
1. Loosen the two set screws (5) of the idle gear (2) to adjust the engagement between the X rack (3) and the idle
gear (4) based on the engagement between the X rack (1) and the idle gear (2).
2. Engage the idle gears (2) and (4) with the X racks (1) and (3), respectively, and attach the motor support (6) while
pressing it.
3. Tighten the two set screws (5) so that there is no end play of the idle gear (4).
RH-981A
3. ASSEMBLY
3761Q
3762Q
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