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7020 Injection Pump

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leader58 View Drop Down
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Joined: 15 Oct 2013
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Post Options Post Options   Thanks (0) Thanks(0)   Quote leader58 Quote  Post ReplyReply Direct Link To This Post Topic: 7020 Injection Pump
    Posted: 29 Mar 2017 at 6:44am
Any tips on removal of pump and injectors
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 7:19am
Unless you know you have an injector problem, leave them alone. If they've been in there for 30 yrs/5000 hrs, you might loosen up the cooper tube in the cylinder head by wrestling with them. Then, you get to pull the cylinder head.
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WD45Diesel57 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WD45Diesel57 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 7:21am
the injectors are pretty simple, just unhook both pressure and return lines and with two hook bars one under each bolt tab and gently but firmly pry at the same time, as for the injection pump you will need to time the pump to engine before removal, there is a little plate on the side of pump with two flat head screws, remove that, some diesel fuel will run out but that's normal. there will be a stationary line and a line on the cam ring, rotate motor till lines are the same. then remove the small round cover on timing cover and unbolt the pump drive gear (take care and don't drop screws down in the timing gears) then remove pump mounting bolts from in there as well, remove all lines and linkages prior to this step, its pretty straight forward, hope this helps
1-B's, 2-C, 2-CA's,2-WF, 1-WC,1-G, 3-WD's, 2-WD45, 1-RC, 1-D17 Diesel, 1-D14, 2-D15,1-D17 row crop,1-D19 gas and All Crop 40,60,66,72,90 and 100
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lowell66dart View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lowell66dart Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 8:49am
Pressure wash everything before you start more for reassembly than taking it apart. Take some pictures. Sometimes it's a few weeks before you get that pump back.
AC 6080 (8030,7060,200,175,D-17HC, 6040,160,6140 all gone) Farmall 1066 & 656 Hi-Clear (for sale), White 2-62 High Clearance, JD 4255 Hi Clear.
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Alex (wi) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Alex (wi) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 1:39pm
I've been told those injection pumps do not really go bad.  But from experience I've also seen what poor fuel filter maintenance can do.  When I rebuilt my 7020 engine, the injection pump and injectors came out pretty easy.  I used the I & T shop manual (AC202 I think), thought hard about it, and took good notes (including making my own timing marks with paint marker).  The only reason I took the pump in was because it was leaking fuel out of the throttle linkage. Hope that helps.

Alex
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injpumpEd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 3:59pm
The DM pump is a very dependable, long lasting pump. However, with today's fuels, and sitting around, they tend to get gummed up and won't start, and the orings get hard and start leaking. There is no flex ring in them that fails though.
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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45 turboa- View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 45 turboa- Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 4:22pm
my DM pump on a 7040 was all gummedup from sitting plungers were stuck I put all new seals in it I thought every thing was alright put it on the tractor but can't get fuel in the pump i'm stumpt. any ideas ?
turbocharged
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leader58 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote leader58 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 5:16pm
How common is it for the copper sleeve to come out of the head upon removal of injectors?
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LB0442 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LB0442 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2017 at 9:27pm
Here is what has worked for me on the injectors.  First I tear off the old dust shield, blow it off around the injector then spray penetrating oil around it.  LET it set and work in.  I made a tool to go on my small slide hammer to pull the injector STRAIGHT out(do not turn).  Welded a nut on a piece of metal I had at the time, I think it was a 9/16 nut?

DO NOT rotate the injector that will probably guarantee a leak at the tube.  I just tap out the injector a little at a time, if it is stuck add more penetrating oil and work on the next one.  You will have to pull off the center sheet metal.  This is what a new tube looks like installed.  Top side.

Bottom side.

The bottom side is just a crimp fitting.  This is what I have run into, someone else may have a better idea?
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 30 Mar 2017 at 7:13am
Slide hammer only works on Bosch injectors.
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