Southbend South Bend 16 SPEED GEARHEAD LATHE SB1053 - Manual (Page 59)

For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe
-57-
O P E R A T I O N
Alternate Configuration
Use the alternate end gear configuration when
cutting modular or diametral threads, as
illustrated in Figure 84.
Figure 84. Alternate end gear configuration.
57T
44T
24T
Modular and Diametral
Pitch Turning
56T
Spacer
Configuring End Gears
Tools Needed Qty
Hex Wrench 6mm .................................................1
Wrench 22mm .......................................................1
To configure the end gears:
1. DISCONNECT LATHE FROM POWER!
2. Remove the end gear cover from the left side
of the headstock.
3. Remove the cap screw, lock washer, and
flat washer from the 57 tooth end gear (see
Figure 85).
4. Loosen the pivot arm hex nut shown in
Figure 85, then swing the pivot arm to the
left so that 44T/56T gears are away from the
57T gear. Hand tighten the hex nut to keep
the arm in place.
As you remove and replace end gears, use
a stiff brush and mineral spirits to clean
away the debris and grime from them, then
re-lubricate them as instructed in End Gears
on Page 71.
5. Making sure to keep the shaft key firmly
seated, remove the spacer and the 57T gear,
then re-install them as follows:
— For the standard end gear configuration,
slide the 57T gear on first, then the spacer
on the outside.
— For the alternate end gear configuration,
slide the spacer on first, then the gear.
6. Re-install the cap screw, lock washer, and
flat washer you removed in Step 3 to secure
the spacer and 57T gear. Do not overtighten.
7. Slide the pivot arm back so that either the
44T or the 56T meshes with the 57T gear,
then retighten the pivot arm hex nut.
Note: Make sure to keep approximately 0.002"
play between the gears.
8. Replace and secure the end gear cover before
re-connecting the lathe to power.
Figure 85. End gear components.
Cap Screw,
Washers & Spacer
Pivot Arm
Hex Nut
57 Tooth
Gear