Quick Change Gears
The quick change gears are used with the feed rate controls to set the required feed rate.
Serious personal injury can result if you make contact with the gears, pulleys, and belt inside
the left door of the lathe
when the machine is run- 
ning or starts unexpect- edly. ALWAYS discon- nect the lathe from power before opening the left side door.
The Model G0554Z lathe ships with the 25T installed in the top position, the 120T/127T in the middle position, and the 50T installed in the bot- tom position, as shown in Figure 60. This configu- ration of gears will cover most feed rates and inch threading. The 30T, 32T, and two 40T gears are provided for additional feed rates and inch/metric threading.
Top
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Pivot |
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Hex Nut |
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Side | Front | in |
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View | View |
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Top | 127 | 25 |
| C |
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| 120 | A | |
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Middle |
| 50 |
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Bottom | 120 |
| A D | |
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| 127 |
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C
Figure 60. Quick change gears.
Tools Needed | Qty |
Hex Wrench 5mm | 1 |
Wrench or Socket 16mm | 1 |
Wrench or Socket 18mm | 1 |
To configure the quick change gears: |
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1.DISCONNECT LATHE FROM POWER!
2.Engage the feed gears so that the change gears will not rotate in the following steps, then open the left side door.
3.Loosen the pivot hex nut and move the middle gears away from the bottom gear, then
4.Loosen the hex nut that secures the middle gears and lower them away from the top gear.
5.To change either the top or bottom gears:
a.Remove the cap screw and flat washer that secures the gear, then the gear.
Note: Take care not to misplace the key from the gear shaft.
b.Clean away debris and grime from the gear and apply a light coat of machine oil to protect it from rust before you store it.
c.Repeat Step b for the replacement gear, then align it with the key and insert it on the gear shaft.
Note: When cutting metric threads, the bottom gear must mesh with the 120T gear of the middle gears. In order to do this, you need to install the bottom gear with the raised hub facing in toward the lathe.
d.
Note: DO NOT overtighten the cap screw. The cap screw merely holds the gear in place and overtightening it will make it harder to remove later and may restrict its rotation.
Model G0554Z (Mfg 01/09+)
