Duramax Diesels Forum Truck of the Week
  #1  
Old 07-01-2010, 08:58 PM
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Default injector cup removal tool

Just how does this tool work? Does it latch onto something on the inside of the cup to pull it out?

Can I make something out of a couple sockets and a threaded rod that would do the same thing?
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Last edited by TheBac; 07-01-2010 at 08:59 PM.
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  #2  
Old 07-01-2010, 09:02 PM
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Not gonna be able to make anything work. The top piece goes inside the cup and when you tighten the bottom nut it has fingers that expand and press against the sides of the cups. Then you slide the bottom piece over the first piece and thread the second nut on and tighten. The bottom piece sits on the head and as you tighten the nut it will pop the cup out of the head.
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  #3  
Old 07-01-2010, 09:03 PM
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when you put it in the cup you tighten the bolt and it tightens on the inside of the cup

ive ghettto rigged a tool but dont recomend it it wasnt made from metal either
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Old 07-01-2010, 09:04 PM
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Tom cant you jut borrow the tool?
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Old 07-01-2010, 09:18 PM
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If the head is off the engine u can take a 3/8 ext, an gentle tap it from the deck side, the ext is the perfect size, that my not be the tool of choice for some guys, but it works at 1:30am. I alway replace the sleeves anyway..
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Old 07-01-2010, 09:32 PM
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Quote:
Originally Posted by sweetdiesel View Post
Tom cant you jut borrow the tool?

I was afraid you guys were going to tell me that tool had "arms" on it somewhere. Looks like I'll have to take a trip to Eric's tomorrow.




Dino, I tried a slightly-less-than 1/2" dia rod like you describe, and it didnt work. I stopped myself before I screwed up the head or the cup.
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2003 Olds Aurora -- the new DD

Two wrongs dont make a right, but three rights do make a left.

Reality is a matter of perspective, and luck favors the prepared.

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Last edited by TheBac; 07-01-2010 at 09:33 PM.
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  #7  
Old 07-02-2010, 06:24 AM
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The tool works good. If you have a dealer that you get parts from they might let you borrow it for a day.
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  #8  
Old 07-02-2010, 06:34 AM
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Couldn't you use a threaded bolt with washers and piece of stiff rubber so when you tightened the rubber it would expand outwards pushings against the cup and thus being able to pull it out.

Never had to take one out so not sure how tight they are in there.
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  #9  
Old 07-02-2010, 07:58 AM
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Whew. Got the cup out by using a 5/16" deep socket thru the injector hole (just thin enough to clear the head, wide enough to catch the cup edge), and tap, tap, tapping it with a brass mallet.

Learned a valuable lesson, one that I have to keep telling myself....trust my abilities.

Thanks guys for all the help.
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2003 Olds Aurora -- the new DD

Two wrongs dont make a right, but three rights do make a left.

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  #10  
Old 07-03-2010, 01:03 AM
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i bought the tool when i did my cups it was the best $150 i have spent tool wise for these trucks.

i wouldnt recommend trying to build a tool since its such a pain in the ass to redo these cups. the tool is still the cheapest in the long run
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  #11  
Old 12-22-2010, 10:28 AM
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where can I buy this tool?
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  #12  
Old 12-22-2010, 10:42 AM
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Quote:
Originally Posted by Jared Duramax View Post
i bought the tool when i did my cups it was the best $150 i have spent tool wise for these trucks.

i wouldnt recommend trying to build a tool since its such a pain in the ass to redo these cups. the tool is still the cheapest in the long run
Agreed. This is the best tool I ever borrowed from you.

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  #13  
Old 12-22-2010, 11:00 AM
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If the heads are off it is easy, I did basically what Tom did. I took some measurements and just turned up a piece of 12L but brass would be even safer.

That's the only way I've ever done it, heads have been off, it seems like squishing a rubber stopper would work though. The right tool is critical but $150 seems like a lot.

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  #14  
Old 01-09-2011, 11:44 AM
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It depends on how often you use it. I use mine a lot, so to me it was worth it. I borrowed the dealers tool 4 times before I bought my own. I used it more than they did. The cups are kind of soft though so dont get too bull with ghetto rigged tools.
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  #15  
Old 02-15-2012, 01:50 PM
sootmonster sootmonster is offline
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i bought a generic puller off ebay that seams to work really well, though i never used the Kent-Moore so i guess i really dont have much to compare it to. ive used it one 4 motors so far with no problems. im sure i could have riged up something that would have got the job done but id rather pay a little and get a tool that is made for the job. i think this is the same one i bought http://www.ebay.com/itm/duramax-inje...item2a19bcd8d7
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