Need to replace the sending unit out of my 66 Chevelle. Do I need a special tool to remove the collar? Is it required to remove the tank first, Any special tricks to pass along?Thanks for the info...

Not sure if removing the tank is required. I had my tank out to clean & paint it. I used a hammer & punch to remove the locking collar. Place the punch on one of the collar tabs & hit it lightly with the hammer until it rotates enough. It will come right off.

By the way, if you have to remove the tank, it is pretty easy.

Mike Sibbitt
66 396 SS

I like to use a brass punch or piece of wooden doweling to eliminate the chance for sparks.

I also keep my trouble light off as in this case (working on gas tanks), if the bulb breaks while it is on, it could fulfill its name and bring real trouble.

If you dont already have a new sending unit,check out your GM dealer.I just bought one for my 68 camaro,about $50 for an AC Delco.Thats cheaper than in the catalog and no shipping fee.

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70 chevelle,400cid turbo400.blue with silver stripes.http://members.spree.com/entertainment/ochrisl/

The above advice is good. I also disconnect the battery just for fun. Use a plastic headed hammer, crack open the cap to relieve pressure, install a new lock ring, and do it outside away from other vehicles or other heat sources.

While working on any fuel related component I use a florescent drop light. I have a 12 volt one that is real handy to carry in the car for those side of the road repairs.
I know a guy that burned down his garage when fuel from the pump he was changing dropped onto the hot bulb and exploded the bulb and started a fire. He was fine everything else was lost.