Old hobart engine driven welder prblm

[jspurgeon]

A buddy of mine has a model G-235 engine driven welder that welds fine , but has no electrical output at the 220 volt plug or the 110 volt outlet. Are there any fuses or circuit breakers that would keep this machine from outputing power or is there something else you guys know about?

[Hobart Expert Rock]

JSPURGEON...........WELCOME ABOARD.............HOW OLD OF A MACHINE IS IT, CAN YOU SUPPLY A SERIAL NUMBER. IF THEIR ARE NO FUSES ON THE FRONT PANEL THEN THE ANSWER IS NO. AS I RECALL THE UNIT IS ONLY 3000 WATTS OUPUT. BUT ONCE AGAIN THE SERIAL NUMBER IS THE KEY................MY GUESS IS THAT LEAD NUMBER 1-2-3-4 FROM THE STATOR ARE THE 115 VOLT WINDINGS.
ANYTHING AFTER THIS IS A GUESS.......................LET ME KNOW AND I'LL SEE WHAT I CAN DO TO HELP OUT................ROCK.........
[email protected],.CIM

[jspurgeon]

I'm not sure how old it is, it looks to be a little younger than dirt but thats questionable. The serial number is aaw-47620, amps-200, specs- 4130, volt-25.

[Hobart Expert Rock]

JSPURGEON.............UNIT SOLD ON 01-27-65 THRU PUEBLO SERVICE CO. IN TULSA/OK............. UNIT HAS STEP UP TRANSFORMER IN IT. FROM THE AC BRUSH'S TO INPUT LEADS IS 47 AC AT IDLE TO 75 AC AT HIGH IDLE. STEP UP TRANSFORMER BOOSTS AC VOLTAGE TO 115 VOLTS AC, LEADS 1-2-3-4..........THEN WE PULLED THE HOT LEAD FROM EACH 115 VOLT WINDING TO THE 230 VOLT SIDE..............I DO NOT HAVE CORRECT MANUAL I HAVE A 4130B SCHEMATIC TO LOOK AT. MANUALS ARE STILL AVAILABLE THRU ELLEN AT 920-735-4197........... COST IS $15.00 USA FUNDS............AND THE UNIT WAS 3000 WATTS GENERATOR................CHECK YOUR AC BRUSH'S AND CONFIRM IN GOOD SHAPE AND MEASURE YOUR AC VOLTAGE...........NEED MORE HELP LET ME KNOW I WILL ASSIST... YOUR GOING TO HAVE SOME FUN NOW..................ROCK........ [email protected]

[Ed Heimbach]

I have a similar machine, problem spot on this unit is where slip rings(a.c. take off point) connect with jumper wire to commutator bars on generator end.
Look for melted solder connections at the jumper/ commutator junction.
Some times you can resolder the connection with a jewler's torch and rosin core solder, never use an acid flux for electrical work.
If you can't find the bad connection, the generator will have to go to an electric motor repair shop, they have specilized equipment to help locate open connections.