Southbend SB owner manual Symptom, Possible Cause, Possible Solution, Workpiece is

Models: SB

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Workpiece is

13" Heavy 13® Gearhead Lathe TR O U B L E S H O OTI N G For Machines Mfg. Since 5/11

Symptom

Possible Cause

Possible Solution

Workpiece is

1.

Headstock and tailstock are not

1.

Realign the tailstock to the headstock spindle bore

tapered.

 

properly aligned with each other.

 

centerline (see Page 40).

 

 

 

 

 

 

 

 

 

 

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.

Loose screw on the feed handle.

2.

Tighten.

move.

3.

Carriage lock is tightened down.

3.

Check to make sure the carriage lock bolt is fully

 

 

 

 

 

released.

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 48).

7. Gibs are too tight.

7. Loosen gib screw(s) slightly (see Page 75).

8.Gears or shear pin broken.8. Replace gears or shear pin (see Page 80).

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.

 

 

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Page 88
Image 88
Southbend SB owner manual Symptom, Possible Cause, Possible Solution, Workpiece is