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GM lock ring tool

plinker

Well-known member
Joined
Feb 28, 2007
Messages
4,286
Location
Northern Wi
When dealing with this particular sending unit lock ring does anyone know what tool works best to remove/install?
https://www.am-autoparts.com/2000/GMC/Sierra1500/fuel-pump/AM-2320919546/1066255.html?rawFit=1066255-2000&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping%20Campaign%20-%20Main%20-%20Medium%20Priority&utm_term=1100001589831&utm_content=all%20published%20products
The hammer & punch method works ok, but is still a pain when these are rusted in place.

I found the Kent Moore J-42219-B tool, but am not sure if it's correct for this particular ring.
 
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Hiball

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Joined
Apr 30, 2009
Messages
14,032
Location
Missery
I generally grab the sacrificial standard blade screwdriver, you know... The one with hammer marks on the handle. Lol

I'm curious.. So I'll watch for the correct tool.
 

fordnut85

Well-known member
Joined
Sep 6, 2012
Messages
231
That tool is a waste of time, the metal tangs get bent and 99% of the time it won't clear hoses, wiring or sensors. The correct tool is a brass punch and hammer

Sent from my Pixel using Tapatalk
 

jsaw

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Joined
Oct 11, 2008
Messages
1,791
Location
Geneva, N.Y.
A dull bit in an air hammer works the best for me to jar them loose. Just altenate where you hammer
 

Lotek

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Joined
Dec 9, 2007
Messages
9,098
Location
Los Angeles, Ca.
Brass punch doesn't make sparks

Not really an issue, I've been popping these rings off and on with a big screw driver and an engineer's hammer since new. The 'proper' tool doesn't work as well or as fast, especially if it's a bit rusty, and I have several of the retainer tools at hand, but you need someone to hold the tank, along with a big breaker bar to have any success.
 

tym

Well-known member
Joined
Mar 5, 2016
Messages
2,448
Location
MA
Screwdriver and gentle taps with a hammer. I've only done this on a new tank, so no worries for fuel vapors or sparks.
 

unslow1

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Joined
Mar 3, 2012
Messages
7,880
Location
Illinois
He lives in the middle of the rust belt. There won't be anything gentle about it. Usually around here we use a chisel/screwdriver and just start hitting. Make sure you already have a new one because you will rarely be able to save a rusty one. Some guys use an air hammer. Usually I mangle them pretty good before they give up and come off.

While you are under there make sure to check those fuel and brake lines. The GM trucks around here are really bad about rusting out above the tank.
 

Tallpilot

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Joined
Jan 13, 2017
Messages
2,384
Location
Orlando
I have a tool by Lisle that is adjustable and a fixed tool from Otc. I think the adjustable is better for GMs. I don't work in the rust belt though.
 
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sweetk30

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Joined
Jan 2, 2011
Messages
2,306
Location
finger lakes area upstate ,ny
those style on plastic tanks with molded in metal tabs . i use air hammer with button head to GENTLY knock rust off the tabs and break the bond of rust from ring .

blow off rust / dirt with blow gun .

then hammer and chissle / or old screw driver .

works 95% of the time . unless the tanks tabs are to far gone from rust . then new tank or good used tank time .

and fyi that lock ring last i checked was cheeper at the dealer on there shelf . price on the link above is high .
 

gungatim

Well-known member
Joined
Jan 8, 2013
Messages
8,101
Location
west mich
I use a combination of large channel locks with a smaller pair of locking pliers to hold them closed on one side, then a hammer and punch on the other, along with a good soaking of lube. that puts pressure on both sides 180 out so it will spin loose. just hitting one side tends to tear it up and it won't spin evenly and get stuck.

I some day i'll weld up a proper tool.
 

Aqua-Andy

Well-known member
Joined
Oct 1, 2013
Messages
332
I use the air hammer method or just a screwdriver and hammer. As was said before the purpose built tool for these barely work on a new vehicle nevermind one that has some rust on it.
 

rpcraft

Well-known member
Joined
Aug 14, 2014
Messages
1,057
Location
Waco
I use a brass hammer and a brass drift because sparks on a gas tank are not good...
 
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