MF390 - Fuel injector pump problem

Shorty69664

Hi all,

So I have a bit of a problem with the fuel injector pump of a MF 390.

To make a long story short, I've been having trouble with dirty diesel for the last while so decided to take give the fuel system a clean out.

Part of this was to remove the small filter in the fuel injector pump for cleaning.
Unfortunately the filter was stuck to a few other parts that promptly fell apart when I had it out. Now I don't know which way they go back together again.

As I was messing with it I also managed to pull out an extra couple of parts including a small spring.

Right at the bottom of where they all go I can see another spring, but the rest I haven't a clue. I've attached 2 photos below (I hope) which shows the spring at the bottom (Not very clear) and all the remaining parts.

If anyone can help me put them in the right order / orientation, I would be forever grateful..

Thanks

emaherx

Shorty69664 wrote: »

Hi all,

So I have a bit of a problem with the fuel injector pump of a MF 390.

To make a long story short, I've been having trouble with dirty diesel for the last while so decided to take give the fuel system a clean out.

Part of this was to remove the small filter in the fuel injector pump for cleaning.
Unfortunately the filter was stuck to a few other parts that promptly fell apart when I had it out. Now I don't know which way they go back together again.

As I was messing with it I also managed to pull out an extra couple of parts including a small spring.

Right at the bottom of where they all go I can see another spring, but the rest I haven't a clue. I've attached 2 photos below (I hope) which shows the spring at the bottom (Not very clear) and all the remaining parts.

If anyone can help me put them in the right order / orientation, I would be forever grateful..

Thanks

Some of these may be useful.
https://m.youtube.com/results?q=cav%20injector%20pump%20rebuild%20&sm=1

case956tom

Shorty69664 wrote: »

Hi all,

So I have a bit of a problem with the fuel injector pump of a MF 390.

To make a long story short, I've been having trouble with dirty diesel for the last while so decided to take give the fuel system a clean out.

Part of this was to remove the small filter in the fuel injector pump for cleaning.
Unfortunately the filter was stuck to a few other parts that promptly fell apart when I had it out. Now I don't know which way they go back together again.

As I was messing with it I also managed to pull out an extra couple of parts including a small spring.

Right at the bottom of where they all go I can see another spring, but the rest I haven't a clue. I've attached 2 photos below (I hope) which shows the spring at the bottom (Not very clear) and all the remaining parts.

If anyone can help me put them in the right order / orientation, I would be forever grateful..

Thanks

swap positions of parts 1 and 2,also turn part no 4 so that the long end goes into the spring, on a pump here part 4 only fits one way,you may have to put on the filter before putting on parts 4 and 5 im not sure,part no 3 looks to me to be the right way round.looking at your pic again you may have to put the wider end of the filter on the end of part no 3

Shorty69664

Thanks forir your help guys. It looks like I wasn't far off but still wrong.
It will be sunday evening before I get a chance to work on it again but thanks so much for your help.

Shorty69664

Thanks again guys. Managed to get the tractor started.
Wouldn't have managed it without your help.

Cheers