For Machines Mfg. Since 3/11

S E R V I C E

Turn-Nado®Gearhead Lathes

8.Loosen the appropriate adjustment ring one notch, then remove your hand from inside the headstock. Have an assistant try to engage the troublesome lever position while you manually rotate the input pulley on the headstock. DO NOT rotate the pulley while your hands are inside the headstock.

Tip: When rotating the adjustment ring, hold the adjustment ring stationary and rotate the input pulley to make the adjustment.

Continue loosening and testing until the lever engages the troublesome position. When you are satisfied with the loosened setting, slide the adjustment ring towards its clutch assembly to lock it in position (see Figure 126). Skip to Step 10.

Adjustment Ring

Ring

Engaged

(Slid over

teeth)

Figure 126. Engaging adjustment ring (reverse side

shown).

9.Tighten the adjustment ring one notch, then slide the adjustment ring towards its clutch assembly to lock it in position.

Tip: When rotating the adjustment ring, hold the adjustment ring stationary and rotate the input pulley to make the adjustment.

Do not attempt to over-tighten the clutch to reduce spin-up time. 3-4 seconds is the normal time required for the spindle to reach full speed. Overtightening the clutch may result in damage and improper lathe function.

10.Replace the clutch access cover, pivot the electrical cabinet back into position and secure it with the fasteners removed in Step 3. If you removed the chuck guard safety switch or work lamp, replace them.

11.Re-connect the lathe to power, then check the function of the lathe. Test on the highest speed setting allowed for the chuck being used. Use a 3-jaw chuck with no workpiece mounted. The spindle should take no more than 3–4 seconds to reach full speed. Repeat the clutch adjustment procedure as needed.

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Image 85
Southbend SB10146PF owner manual Engaging adjustment ring reverse side Shown