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| Unit 11 | |
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| Repairs and maintenance | |
| 10.3 Troubleshooting procedures (2) |
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| NATURE OF PROBLEM | ASSUMED CAUSE | CORRECTION |
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VIBRATION |
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| Output rotating section | Backlash, torsion, deflection in | Check input drive system |
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| input system |
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| Output rotating section | Loose linkage in input system | Change linkage elements, tighten bolts |
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| Output rotating section | Rotation lag in input system | Change rotation transmission component |
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| Output rotating section | Insufficient motor power | Increase motor power rating |
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| Output rotating section | Clutchbrake timing | Adjust timing cam |
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| Output rotating section | Cam flaking | Replace cam, reduce load on output shaft |
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| Input rotating section | Rotating components are | Balance components |
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| physically unbalanced |
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| Input rotating section | Rotating components are eccentric | Align centers |
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| Residual vibration | Insufficient torsional rigidity in | Increase rigidity of output system |
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| output system |
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| Residual vibration | Momentum in output system is too | Select a larger indexing drive model |
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| intense |
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| Overall | Frame deformity | Increase rigidity of mounting base |
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TEMPERATURE RISE |
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| Entire housing | Heat caused by agitation | Check lubrication oil level and viscosity |
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| Bearing burnout | Rotating speed too high | Adjust eccentric flange |
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| Cam, cam follower burnout | Too much preload | Check lubrication |
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| Bearing burnout | Insufficient lubrication | Check lubrication |
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OIL LEAKAGE |
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| Input/output shaft | Broken sealing device | Replace sealing device, install dust cover |
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| Flange surface | Broken | Replace parts |
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| Oil plug | Lubricating oil splashes | Change oil plug part number |
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| Mounting hole surface | Starting hole for tapping goes all | Apply sealant to mounting |
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| the way through |
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BROKEN SHAFT |
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| Input shaft | Damage due to material fatigue | Reduce overhanging load |
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| Output shaft | Shock load | Install torque limiter on output shaft |
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| Key shaft | Fretting corrosion | Change friction linkage |
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| Rust | Ambicient conditions | Apply rust inhibitor or paint surface |
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