Acer Dynamic 3370X, Operations Manual & Parts List

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4-7 Gear Box
1. Transmission of Gearbox is from Headstock’s forward & reverses mechanism to
idle-gears change up mechanism. And then via two 2 steps and one 3 steps speed
change mechanism within gear box to a 9 steps speed change mechanism. Finally
transfer through feeding change mechanism to lead crew and feed rod.
2. Gear box main function is thread cutting and automatic feed for cutting inch or
metric thread, but still can be cut DP and Module thread without changing any
gear.
3. The thread cutting , please follow the instructions thread cutting chart of various
gear lever placed in the appropriate position in order to cut the require thread
pitch.
4. Automatic feed, please follow the thread cutting chart in section 4-8, depending
on the desired feed rate, various shift levers must be in the correct positions, and
then engage feed lever into position to activate automatic feeding operation.