TROUBLESHOOTING | ||
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| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
A. No welder or output power. | 1. | Open in miscellaneous leads. | 1. | Refer to wiring diagram & | |||
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| check related leads. | ||
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| 2. | Open lead in flashing or field | 2. | Refer to wiring diagram and | ||
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| circuit. |
| check all related leads (200, | ||
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| 224, 200A, 200B, 201, 201A). | ||
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| 3. | Faulty rotor. | 3. | Lift brushes and check rotor | ||
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| resistance between slip rings. | ||
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| It should be approximately | ||
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| 4 ohms. | ||
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| 4. | Faulty Potentiometer (R1). | 4. | Replace with known good one. | ||
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| 5. | Faulty stator Field winding. | 5. | Disconnect lead #9 at D2 and | ||
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| check for continuity between | ||
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| leads #9 and #7. | ||
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| 6. | Faulty Field rectifier (D2). | 6. | Replace with known good one. | ||
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| 7. | Faulty P.C. Board. | 7. | Replace with known good one. | ||
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B. Engine will not idle down to | 1. | Idler switch on High Idle. | 1. | Set switch on Automatic Idler. | |||
| low speed. | 2. | External load on welder or | 2. | Remove all external loads and | ||
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| auxiliary power. |
| short circuits. | ||
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| 3. | Faulty idler solenoid. | 3. | Replace with known good one. | ||
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| 4. | Faulty P.C. Board. | 4. | Replace P.C. Board with | ||
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| known good one. | ||
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
RANGER 8+ DIESEL
