FAQ - Cobra Gooseneck
MIG Welding Gun (Welding Torch)
Q. Why is there is groove in my knurled drive roll?
PIB 0008-A Insulated Drive Rolls.
Q. How do I know if I have an old Cobra Gooseneck? Or System III? Or Cobra Gold?
Even though they all look the same, there are noticeable differences that distinguish each Model. The older Cobra Gooseneck utilizes a large nut that holds the conduit onto the end of the front body. The System III and the Cobra Gold both use a small set screw from the top of the handles. The majority of these older Cobra goosenecks have "S" clocked Amphenols.
The System III and the Cobra Gold goosenecks are very similar in appearance however the Cobra Gold does live up to its name. By looking down into the hole where the drive rolls are, the knurled drive roll, the idler arm and the gearbox all have a gold plated color. The System III has a gray colored idler arm and gearbox. These two guns have "W" clocked Amphenols.
Q. How can I tell if my 7 pin Amphenol is "S" or "W" clocked?
Both of these Amphenols are the same, except the rotational location of the pins, with respect to the keyway slot is different.
The "S" clocked has pins "A" and "F" on each side of the slot. While the "W" clocked Amphenol has pin "E" almost directly underneath the slot.
Q. Can I use the conduit from my Cobra Gooseneck on my Cobra Gold??
Yes. The conduit from the Cobra Gooseneck may have a Nut Kit attached. This kit can be removed and the conduit can be used on any MK welding gun.
Q. How do I test the potentiometer? "S" clocked:
Using an Ohm meter, measure resistance across pin ""D" (wiper) and pin "C". The resistance should vary from 0-5K ohms while turning the potentiometer.
Measure the resistance across pin "D" (wiper) and pin "A". The resistance should vary from 5K-0 ohms while turning the potentiometer.