Southbend SB1038F - Manual (Page 82)

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For Machines Mfg. Since 7/09 EVS Toolroom Lathes TR O U B L E S H O OTI N G
Gear change levers
will not shift into
position.
1. Gears not aligned inside headstock. 1. Rotate spindle by hand with light pressure on the
lever until gear falls into place.
Carriage will not
feed, or is hard to
move.
1. Gears are not all engaged. 1. Adjust gear levers.
2. Loose screw on the feed handle. 2. Tighten.
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
lubrication. 5. Lubricate bedways and handles.
6. Carriage stop is interfering. 6. Check carriage stop position, and adjust it as
necessary (Page 42).
7. Gibs are too tight. 7. Loosen gib screw(s) slightly (Page 66).
8. Gears or shear pin broken. 8. Replace gears or shear pin (Page 71).
Headstock oil
does not flow or
circulate properly.
1. (For first time operation only) the
lathe is wired out-of-phase. 1. Correct out-of-phase wiring (refer to Page 17 for
details).
2. Emergency stop push-button is
engaged or at fault. 2. Rotate button clockwise until it pops out to reset it
for operation; replace if not working properly.
3. Power supply is switched OFF at
main power switch or breaker. 3. Make sure main power switch and circuit breaker
are turned ON.
4. Insufficient oil level in headstock
oil tank or incorrect oil used in
headstock oil tank. 4. Add oil to the headstock oil tank (refer to
Headstock "Checking & Adding Oil" on Page 56
for details). Make sure to use the correct type of oil.
5. Suction screen clogged. 5. Clean suction screen (see Figure 111 on Page 57).
6. Pinched/damaged oil line. 6. Trace oil lines to inspect and replace pinched/
damaged line.
7. Suction side of pump drawing air. 7. Locate leak and reseal/replace affected components.
8. Leak in distribution manifold
located inside headstock. 8. Locate leak and reseal/replace affected components.
9. Pump motor at fault. 9. Replace/repair pump motor.
Symptom Possible Cause Possible Solution
Workpiece is
tapered.
1. Headstock and tailstock are not
properly aligned with each other. 1. Realign the tailstock to the headstock spindle bore
centerline (Page 34).
Chuck jaws will
not move or do not
move easily.
1. Chips lodged in the jaws or scroll
plate. 1. Remove jaws, clean and lubricate scroll plate, then
replace jaws.