SWM-9-A1 military spool gun welder help needed

[BMS07]

I just got this SWM-9-A1 military aluminum spool gun welder. Trying to find a manual and information on it. Everything seems to work except the wire don't feed when you pull the trigger. Wondering if anyone has one of a manual.
Thanks Brad

 

[gimpyrobb]

Still no luck? Tried it on a dc welder with reverse polarity yet? I'll see if I can dig up my manuals this weekend.

 

[BMS07]

I haven't been able to hook it up to a DC welder yet. My buddy that has one has been gone. Just wish there was more info on these welders. Would be nice to know what relays are for what.