Lincoln LT-7 Troubleshooting Manual page 29

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Troubleshooting Guide –
components. See Wiring Diagrams for troubleshooting of specific circuits.
PROBLEMS
(SYMPTOMS)
The travel motor runs with limited
speed. The control may be erratic.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln
Electric Service Department for electrical technical troubleshooting assistance before you proceed.Call 216-383-2531 or 1-800-
833-9353
TROUBLESHOOTING AND REPAIR
See Wiring Diagrams for location of specified
FIELD
COURSE OF ACTION
TRAVEL PROBLEMS
1. Remove power to unit and
check the resistance of travel
speed control rheostat (R6).
Normal resistance is 5000
ohms. Also check R6 for
smooth operation.
2. Check associated leads
between R6 and the travel
board.
3. The travel board may be faulty.
LT-7 TRACTOR
RECOMMENDED SHOP
COURSE OF ACTION
1. Perform the Travel Motor Test .
CAUTION
Observe Safety Guidelines
detailed in the beginning of this manual.
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