Table 4-3. Troubleshooting — continued.
Trouble
Possible cause
Remedy
Battery discharges bet-
batteries only).
months).
ween uses (cont'd.)
3.
Battery.
Replace battery.
4.
Oil pressure switch S2.
Replace S2.
No power output at
Weld/Power switch S1 in
Place S1 in POWER position.
power receptacles.
WELD position.
Low power output at
1.
Low setting on FINE
Rotate R1 to 100.
power receptacles.
AMPERAGE control R1.
2.
Engine running below
Check air filter; clean if
required speed (1860
necessary. Adjust engine
rpm).
speed.
3.
Voltage Regulator board
Replace PC2.
PC 2.
4.
Transformer T1.
Replace T1.
Low weld output.
Engine running below re-
Check air filter; clean if
quired speed (3000 rpm).
necessary. Fill fuel tank.
Adjust engine speed.
Erratic weld output.
1.
Damp or wrong type
Try different electrodes.
electrodes.
2.
Improper connection to
Check and tighten loose
workpiece.
connections.
Erratic weld and power
Dirty slip rings and/or worn
Clean slip rings and/or rep-
output.
brushes.
lace worn brushes.
High power voltage.
Voltage Regulator board
Replace PC2.
PC 2.
High weld voltage.
Voltage Regulator board
Disconnect lead No. 48 from
PC2.
Voltage Regulator board PC2.
If voltage drops to 80 volts
ac, replace Voltage Regulator
board PC2.
4-12 BOOSTER BATTERY JUMP STARTING.
4-12.1
If jump starting is attempted, employ the safety precautions below and the following step by step procedures
in order of appearance.
4-33
