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How to replace injectors on a 7010?
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roscoe View Drop Down
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Joined: 30 Oct 2009
Points: 37 		Post Options Post Options   Thanks (0) Thanks(0)   Quote roscoe Quote  Post ReplyReply Direct Link To This Post Topic: How to replace injectors on a 7010?
    Posted: 25 May 2010 at 9:12pm
My mechanic says that I have a few bad injectors, so I am going to replace them all.

I have a 1980 model 7010.

Is this a straight-forward job, or are there any tricks involved?

Thanks,
Roscoe.
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Amos View Drop Down
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Points: 1318 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Amos Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2010 at 9:19pm
Quite easy if they all come out without the sleeve.  I have had one come out with the sleeve and it was on a 7010, other than that not hard at all.  You may want to consider having your injection pump at least tested if not overhauled at the same time as the injectors.  Need not buy new just have a reputable shop repair your old injectors.
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Adam Stratton View Drop Down
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Points: 1363 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adam Stratton Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2010 at 7:54am
It is a pretty simple job.  Make sure and watch if the injectors come up with or without the little copper washer/ fire ring.  If they get lodged in the head, you can use a 5/8 course thread tap to catch them and pull them out.  Be careful not to break them when pulling them out (pull straight with lots of WD-40 or similar), and dont cross thread the lines when putting them back on. 
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Points: 20945 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2010 at 7:56am
No copper washers used on 7000-7010-7020-8010.
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Adam Stratton View Drop Down
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Points: 1363 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adam Stratton Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2010 at 8:16am
Oops.  Sorry!   I just assumed a 7010 had them too.  Thanks for straightening that out for me.  Roscoe would have been digging for those rings for a LONG time.  
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roscoe View Drop Down
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Points: 37 		Post Options Post Options   Thanks (0) Thanks(0)   Quote roscoe Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2010 at 9:11am
Thanks, Dr. Allis.   How are they sealed? O-Rings?  Metal seats?
 
Roscoe
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Points: 1213 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2010 at 9:58am
They are sealed with a copper sleeve instead of washers.  By going to the sleeve, it was supposed to keep the injector cooler since the copper was in direct contact with the coolant in the head.

Hurst
1979 Allis Chalmers 7000
5800 Hours
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