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  1. #1
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    Default Ford 3600 CAV injection pump

    Today I took the top off the pump and put new o-rings on the throttle and kill switch shaft. It ran perfect before this. After I put it back together I can't get it to start. It is getting fuel to the pump (Bleed the air) (almost new fuel filter), but when I take the injector lines off at the injectors there isn't any fuel being pumped out. Did I not put it back together right or what I can't figure it out. It seemed not that complicated. Thanks for any help.

  2. #2
    Platinum Member DieselMonk's Avatar
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    Default Re: Ford 3600 CAV injection pump

    that's because the pump itself is air locked. give it full throttle and open up the injector pump bleeder screw until diesel comes out without any air bubbles. Then close it, don't forget to turn the throttle down and it should start up.

  3. #3
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    Default Re: Ford 3600 CAV injection pump

    Quote Originally Posted by DieselMonk View Post
    that's because the pump itself is air locked. give it full throttle and open up the injector pump bleeder screw until diesel comes out without any air bubbles. Then close it, don't forget to turn the throttle down and it should start up.
    I did crank until diesel fuel poured out of the side of the pump were the bleeder is at and then put the bolt back in. Still after this no fuel to the top of the injector lines.

  4. #4
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    Default Re: Ford 3600 CAV injection pump

    Loosen the fitting on top of one of the injectors. Easy to start at one end and work to the other. I usually start with the one at the "end" of the system. Then crank until you get fuel out. You should have some fuel leaking out within 30 seconds. Don't take it all the way off, just loose about a turn and a half. If you get fuel and no start, then go to the next one. When you get fuel there, go to the next. It should start with the first one, but sometimes it takes all three.

  5. #5
    Platinum Member DieselMonk's Avatar
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    Default Re: Ford 3600 CAV injection pump

    as gengine said: crack the injector line at the injector and do one by one while cranking.

  6. #6
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    Default Re: Ford 3600 CAV injection pump

    Quote Originally Posted by gengine View Post
    Loosen the fitting on top of one of the injectors. Easy to start at one end and work to the other. I usually start with the one at the "end" of the system. Then crank until you get fuel out. You should have some fuel leaking out within 30 seconds. Don't take it all the way off, just loose about a turn and a half. If you get fuel and no start, then go to the next one. When you get fuel there, go to the next. It should start with the first one, but sometimes it takes all three.
    I have took all three lines off the injector and cranked for probably 2-3 minutes and nothing. It ran perfect before I took the top off and put O-rings on the shafts. I tried to keep all dirt out also, but a small chip of paint, it is not impossible to have got in there, but in my opinion it should start and clog up latter if that was the fact. Every time i touch a pump it is misery. There is fuel getting to the plastic lines on top of the injectors.

  7. #7
    Veteran Member whodat526's Avatar
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    Default Re: Ford 3600 CAV injection pump

    what it sounds like it the kill rod is not correctly seat inside the pump from when you took the top cover off you must aling a dowel on the kill shaft inside a slot on the kill rod inside the top cover

  8. #8
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    Default Re: Ford 3600 CAV injection pump

    Quote Originally Posted by whodat526 View Post
    what it sounds like it the kill rod is not correctly seat inside the pump from when you took the top cover off you must aling a dowel on the kill shaft inside a slot on the kill rod inside the top cover

    You maybe on to something . I did take the cover off again and try to make sure this was lined up right, but still not sure if it is right. I put the spring in the second hole at about the middle of the pump and on the back of the pump I wasn't 100% sure which hole so I put it in the second hole as I didn't notice the holes until I had the spring off.


    http://www.fujiyachts.net/manuals/CA...d%20Manual.pdf

  9. #9
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    Default Re: Ford 3600 CAV injection pump

    Those springs are pretty specific to which holes they go in. If you take the cover off again, you should be able to see wear marks where the spring should go. The spring is your governor spring, and that pump is on a whole lot of different motors and tractors, so there are options with the governor spring for different fuel demands.

  10. #10
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    Default Re: Ford 3600 CAV injection pump

    When you pull the kill switch the kill rod in the pump should move forward toward the back of the pump (toward seated driver)? I took the top off again (it was full of diesel fuel) and checked to make sure I had the end in the slot.

    I am not 100% sure the spring in the pump toward the front of the pump (closest to the radiator) goes in the second hole, but it should still run if this is not correct just not run right? If I can't get the pump going would it be better to get this pump serviced or buy one of these? When cranked fuel pours out bleed hole on pump, but can't get it to go to the top of the injector pipes at the injectors.

    http://www.ebay.com/itm/110640435724...9#ht_556wt_698

    The tractor is in good shape with the original paint still on the hood as it has always been shed stored. Last few years put diesel additive in it and maintained like it should be. Bought the tractor new 2/22/77 and it has 4200 hours on it. Starts easy and everything works on it with no leaks except the throttle diesel shaft which I am trying to fix.

    [img]
    By jltrent at 2012-04-01[/img]
    Last edited by jltrent; 04-01-2012 at 05:40 AM.

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