SERVICE
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| M1109 Combo Lathe/Mill | |
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Operation and Work Results |
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| SYMPTOM |
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| POSSIBLE CAUSE |
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| CORRECTIVE ACTION | |
| Entire machine |
| 1. | Workpiece is unbalanced. |
| 1. | Reinstall workpiece so it is as centered with the |
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| vibrates exces- |
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| spindle bore as possible. |
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| sively upon |
| 2. | Worn or broken gear present. |
| 2. | Inspect gears and replace if necessary. |
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| startup and while |
| 3. | Chuck or faceplate has become unbalanced. |
| 3. | Rebalance chuck or faceplate; contact a local |
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| running. |
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| machine shop for help. |
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| 4. | Spindle bearings badly worn. |
| 4. | Replace spindle bearings. |
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| Bad surface fin- |
| 1. | Wrong RPM or feed rate. |
| 1. | Adjust for appropriate RPM and feed rate. |
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| ish. |
| 2. | Dull tooling or poor tool selection. |
| 2. | Sharpen tooling or select a better tool for the |
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| intended operation. |
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| 3. | Too much play in gibs. |
| 3. | Tighten gibs. |
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| 4. | Tool too high. |
| 4. | Lower the tool position. |
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| Can't remove |
| 1. | Quill had not retracted all the way back into |
| 1. | Turn the quill handwheel until it forces taper out |
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| tapered tool |
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| the tailstock. |
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| of quill. |
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| from tailstock |
| 2. | Debris was not removed from taper before |
| 2. | Always make sure that taper surfaces are clean. |
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| quill. |
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| inserting into quill. |
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| Cross slide, com- |
| 1. | Gibs are out of adjustment. |
| 1. | Tighten gib screw(s). |
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| pound slide, or |
| 2. | Handwheel is loose. |
| 2. | Tighten handwheel fasteners. |
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| carriage feed has |
| 3. | Lead screw mechanism worn or out of adjust- |
| 3. | Tighten any loose fasteners on lead screw mecha- |
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| sloppy operation. |
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| ment. |
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| nism. |
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| Cross slide, com- |
| 1. | Gibs are loaded up with shavings, dust, or |
| 1. | Remove gibs, clean ways/dovetails, lubricate, and |
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| pound slide, or |
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| grime. |
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| readjust gibs. |
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| carriage feed |
| 2. | Gib screws are too tight. |
| 2. | Loosen gib screw(s) slightly, and lubricate |
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| handwheel is |
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| bedways. |
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| hard to move. |
| 3. | Backlash setting too tight (cross slide only). |
| 3. | Slightly loosen backlash setting by loosening the |
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| locking screw and adjusting the spanner ring at the |
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| end of the handle. |
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| 4. | Bedways are dry. |
| 4. | Lubricate bedways and handles. |
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| Cutting tool or |
| 1. | Tool holder not tight enough. |
| 1. | Check for debris, clean, and retighten. |
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| machine com- |
| 2. | Cutting tool sticks too far out of tool holder; |
| 2. | Reinstall cutting tool so no more than 1/3 of the |
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| ponents vibrate |
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| lack of support. |
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| total length is sticking out of tool holder. |
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| excessively dur- |
| 3. | Gibs are out of adjustment. |
| 3. | Tighten gib screws at affected component. |
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| ing cutting. |
| 4. | Dull cutting tool. |
| 4. | Replace or resharpen cutting tool. |
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| 5. | Incorrect spindle speed or feed rate. |
| 5. | Use the recommended spindle speed. |
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| Inaccurate turn- |
| 1. | Headstock and tailstock are not properly |
| 1. | Realign the tailstock to the headstock spindle bore |
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| ing results from |
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| aligned with each other. |
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| center line. |
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| one end of the |
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| workpiece to the |
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| other. |
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| Chuck jaws won't |
| 1. | Chips lodged in the jaws. |
| 1. | Remove jaws, clean and lubricate chuck threads, |
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| move or don't |
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| and replace jaws. |
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| move easily. |
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| Carriage won't |
| 1. | Gears are not all engaged. |
| 1. | Adjust gear positions. |
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| feed. |
| 2. | Gears are broken. |
| 2. | Replace. |
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| 3. | Loose screw on the feed handle. |
| 3. | Tighten. |
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