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Injector pump pressure relief
- Thread starter brenten5
- Start date
- Joined
- Jul 5, 2003
- Messages
- 3,988
- Location
- Laag Zuthem
- First name
- Renze
Machinery:
1976 5718
1978 5718 35kmh: Work in progress
1967 3011
Could you explain yourself a little clearer ? I have never heard of injector pumps having a pressure relief, so you must mean something else..
- Joined
- Jan 28, 2012
- Messages
- 169
- First name
- smash n machine
I'm a never ending mission to find out what is wrong with this injector pump after sitting for 4 years and after a quick talk with the bloke from zetor direct he told me it sounded like the pressure relief/release ontop of the pump could be the issue, my workshop manual has no information on it, I assume it's what let's the fuel return back into the tank which I think it's not doing.
I found a little info on some really old topics on this forum but nothing really relevant to the actual mechanism but enough to tell me that fuel should be able to return at only a few psi, little enough so it can return even by hand priming it, I don't think it's returning at all.
I found a little info on some really old topics on this forum but nothing really relevant to the actual mechanism but enough to tell me that fuel should be able to return at only a few psi, little enough so it can return even by hand priming it, I don't think it's returning at all.
- Joined
- Apr 2, 2016
- Messages
- 4
- First name
- Tanner 5340
I know this is an old post but no one answered your question so I'll try to. ....
There is a fuel return line (solid tube) on the back of the injector pump that is fixed to the pump with a banjo bolt. That banjo bolt contains the pressure relief valve which is just a steel ball and spring held in place with a smaller bolt.
If you can look behind the IP you'll see a bolt in a larger bolt. That is the pressure relief banjo bolt.
Hope I'm making sense!
There is a fuel return line (solid tube) on the back of the injector pump that is fixed to the pump with a banjo bolt. That banjo bolt contains the pressure relief valve which is just a steel ball and spring held in place with a smaller bolt.
If you can look behind the IP you'll see a bolt in a larger bolt. That is the pressure relief banjo bolt.
Hope I'm making sense!
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