Southbend SB10146PF owner manual Symptom Possible Cause Possible Solution

Turn-Nado®Gearhead Lathes TROUBLESHOOTING For Machines Mfg. Since 3/11

Symptom

Possible Cause

Possible Solution

Workpiece is tapered.

1.Spindle and tailstock centerlines are not properly aligned with each other.

1.Realign the tailstock to the headstock spindle bore centerline (see Page 45).

Chuck jaws will	1.	Chips lodged in the jaws or scroll	1.	Remove jaws, clean and lubricate scroll plate, then
not move or do not		plate.		replace jaws.
move easily.
Carriage will not	1.	Gears are not all engaged.	1.	Adjust gear levers.
feed or is hard to	2.	Carriage lock is tightened down.	2.	Check to make sure the carriage lock bolt is fully
move.				released.
	3.	Loose screw on the feed handle.	3.	Tighten.
	4.	Chips have loaded up on bedways.	4.	Frequently clean away chips that load up during
				turning operations.
	5.	Bedways are dry and in need of	5.	Lubricate bedways and handles.
		lubrication.
	6.	Micrometer stop is interfering.	6.	Check micrometer stop position and adjust it as
				necessary (see Page 52).
	7.	Gibs are too tight.	7.	Loosen gib screw(s) slightly (see Page 78).
	8.	Gears or shear pin broken.	8.	Replace gears or shear pin (see Page 84).
Gear change levers	1.	Gears not aligned inside headstock.	1.	Rotate spindle by hand with light pressure on the
will not shift into				lever until gear falls into place.
position.
Spindle clutch	1.	Spindle clutch mechanism is too	1.	Adjust spindle clutch (see Page 81).
takes more than		loose.
3–4 seconds to
engage.
Difficulty engaging	1.	(When new) Spindle clutch needs	1.	Use moderate pressure to engage spindle lever until
spindle lever.		break-in time.		it is broken-in.
	2.	Spindle clutch is too tight.	2.	Adjust spindle clutch (see Page 81).

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