TM 5-3431-203-15
3-15. Gas Insufficient
3-18. Welding Machine Operates
Erratically
Probable cause
Possible
remedy
Possible
remedy
Probable cause
Lines or fittings
Clean lines and/or fittings
obstructed.
Spark gap improperly
Clean adjusting screws
Solenoid defective --------- Replace solenoid (para
adjusted.
and adjust spark gap
3-49).
3-16. Water Insufficient
3-19. Remote Control Does Not Function
Properly
Probable cause
Possible
remedy
Lines or fittings
Possible
remedy
Clean lines and/or fittings
Probable cause
obstructed.
Wires loose at receptacle ---- Tighten wires (para 3-38).
Solenoid defective ------------Replace solenoid (para
Receptacle defective ---------- Replace receptacle (para
3-50).
3-38).
Replace switch (para
Remote contactor switch
3-17. Pilot Lights Inoperative
3-39).
defective.
Probable cause
Possible
remedy
Replace switch (para
Remote amperage switch
3-40).
defective.
Lamp burned out --------- Replace lamp (para
3-10).
Lead broken or con-
Repair lead or tighten
3-20. Contactor Breaks Circuit
nection loose.
connection (para
Possible
remedy
Probable cause
3-30).
Replace switch (para
Thermostatic
switch
Socket defective ------------- Replace socket (para
3-42)
defective.
3-30).
Section VI. FIELD EXPEDIENT REPAIRS
3-23. High Frequency Inoperative
3-21. General
Operator and organizational maintenance
Expedient
remedy
Trouble
troubles may occur while the welding machine
Timer defective -------- Exchange timers until
is operating in the field where supplies and
defective timer can be
repair parts are not available and normal cor-
replaced (para 3-34).
rective action cannot be performed.
When
this condition exists, the following expedient
3-24. Power Failure
repairs may be used in emergencies, upon the
decision of the unit commander. Equipment
Expedient
remedy
Trouble
so repaired must be removed, from operation
Interlock switch
Use jumper wire to bypass
as won as possible and properly repaired be-
interlock switch until it
defective.
fore being placed in operation again.
can be replaced (para
3-22. Loss of Water
3-35).
Trouble
Expedient
remedy
Provide jumper wire
Contactor broken or
Pipe or fitting cracked -----Tape cracked pipe or
defective.
around contactor until it
fitting until defective
can be replaced (para
pipe or fittings can be
replaced.
3-41).
Section VII. WELDING MACHINE TOP, HOUSING, DOORS,
AND PANELS
of a heavy metal top, sides, back section and
3-25. General
front section. This section contains informa-
The welding machine housing is constructed
tion on the maintenance of these components.