Converter cable lug screw removal?

[chriscowles]

Can anyone advise me how to loosen the screw on the main 12V lugs on my converter? They're slotted for a regular screwdriver and for a square driver. I tried both and got nowhere. It's like they're welded in place.

Both the square but and the screwdriver fit correctly. The screwdriver is thick and is the same width as the screw. I just can't get enough torque to break it free.

The screwdriver has slipped out a couple of times. I don't want to keep trying for fear of damaging the slot.

Suggestions?

[TitanMike]

One possibility is to use a 1/4" drive ratchet, extension, and socket with screwdriver blade that fits the screw. Push in on the ratchet head with one hand and apply torque with other.

Might also help if you have a larger "Soldering Gun" that you can use to apply some direct heat to the screw and lug.

This is a good news, bad news, situation. The good news is that the screw is tight like it's supposed to be. Bad news is the screw is tight and will be hard to break loose.

I've found that using the thickest blade that fits the slot (even if the sides have to be ground down) works best to keep driver from slipping out. Also, "Hollow Ground" screwdriver bits like found in many of the kits that have a multitude of bit sizes and shapes work better than the common straight ground blades found on regular screwdrivers.

Patience and perseverance will be required, perhaps along with a few choice words and an adult beverage.

Trust me on this, I've been there more than just a few times.

[chriscowles]

The 1/4" ratchet with a fat Phillips bit did the trick. The handle on the ratchet provided the leverage to apply more torque.

Now, if only I can get it that tight when I reassemble it. :^)

Thanks, TitanMike

[TitanMike]

Originally Posted by chriscowles

The 1/4" ratchet with a fat Phillips bit did the trick. The handle on the ratchet provided the leverage to apply more torque.

Now, if only I can get it that tight when I reassemble it. :^)

Thanks, TitanMike

Just reverse the ratchet. It'll be a piece of cake.

FWIW, not a bad idea to come back at a later date, after some use, and check for tightness again.