TROUBLESHOOTING AND REPAIR |
Observe Safety Guidelines detailed in the beginning of this manual.
Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
PROBLEMS
(SYMPTOMS)
The engine goes to low idle, but will not stay at low idle.
The machine has normal weld and auxiliary output. The engine starts and shuts down normally.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
Make sure there are no external loads on the weld terminals or the auxiliary power receptacles. Disconnect the weld cables and unplug anything that may be connected to the auxiliary receptacles.
RECOMMENDED
COURSE OF ACTION
The low idle RPM may be too low. Perform the Engine Idle
Adjustment Procedure.
The idle solenoid linkage may be out of adjustment. Check that the linkage moves freely and that the plunger is not binding in any way. Check that the solenoid can freely pull in and solidly seat against its internal stop.
The idle solenoid may have failed. Disconnect the solenoid leads and check the resistance of the solenoid coil. It should be about 8.8 Ohms at 77 Deg. F
(25 Deg. C). Check the solenoid for a grounded coil; the resistance between chassis ground and either solenoid lead wire should be 500k Ohms (500,000 Ohms) minimum.
There may be a poor or intermittent connection in the solenoid wiring, or a component may be opening while under load. Check the idle switch and the wiring between the switch, the solenoid, and the PC Board. Repair or replace any poor connections, damaged wiring, or faulty components. (See wiring diagram)
The idle/engine protection PC board may be faulty.
Return to Section TOC
Return to Master TOC
CAUTION
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 technical troubleshooting assistance before you proceed. Call
