mark1971
Active Member
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- walsall..west midlands
Sedimeter
- Thread starter Tom79
- Start date
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daveyboy300tdi
New Member
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- 67
Done mine today on my 300tdi after reading this thread. It was full of water! the diesel was floating on the water about 2mm from the top. When I was going down hills off road it must have been dragging in loads of water. It was also full of rust residue. About 4mm in the bottom of the sedimentor. Orangy stuff.
Had a go at the plastic drain plug, tried my luck...... snapped it
Thought I'd got it but was shearing the plastic.
So undid the 11mm bolt, took me 10 mins start to finish. Engine pulls much better, it's eliminated flatspots. Thought I had a problem with my injectors after hydrolock and changing a rod but it must have been pulling water out of the sedimentor. Nice free and easy fix, cheers
Had a go at the plastic drain plug, tried my luck...... snapped it
Thought I'd got it but was shearing the plastic.So undid the 11mm bolt, took me 10 mins start to finish. Engine pulls much better, it's eliminated flatspots. Thought I had a problem with my injectors after hydrolock and changing a rod but it must have been pulling water out of the sedimentor. Nice free and easy fix, cheers
daveyboy300tdi
New Member
- Posts
- 67
Nope, just emptied it. Didn't have any deisel to hand to refil it. just replaced it, started it up... revved it and restarted it a few times until it bled itself then took it for a run. It was much better, throttle response and pick up.
mark1971
Active Member
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- walsall..west midlands
told you not to mess with the drain plug didn't i 
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- Embasinga stocæ
I dont think I got one of them - Is it usual to take off the Sedimenter?
mark1971
Active Member
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- 456
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- walsall..west midlands
some people do take them off daft, because they can cause probs when the pipes corrode that go to them
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ok - one more thing to forget about. Mind yu - duz this mean all the crap gets into the injun - or the front filter?
mark1971
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- walsall..west midlands
thebiglad
Well-Known Member
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- Central France
Actually no - it gets into the lift pump as that is before the fuel filter. That's why the sedimenter is there.
stretchie_
Active Member
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- 476
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- Gloucester
Been looking at doing this for a while cos my 300tdi will not rev past 3,250rpm, it still drives fine though, I got the new seals for the inside and everything
Everytime I start I fanny about, get scared about snapping the little plastic drain bolt (PLASTIC?? I mean, WHY??) then Haynes says about removing the fuel line in to the sedimentor and lifting it above the tank (There is a boot floor in the way )
But this thread makes me feel a little better about it. I was going to remove it without disconecting the hose but no idea where the bolt was to undo and was sure I could feel more than one bolt up there.
I have just read Snows thread about replacing his boot floor and that has a cracking pic of the top of the sedimentor.
Here it is, hope this is of help to others:
So which bolt do I undo to remove the sedimentor from the bracket so I can bring it down to take it apart?
Cheers
Everytime I start I fanny about, get scared about snapping the little plastic drain bolt (PLASTIC?? I mean, WHY??) then Haynes says about removing the fuel line in to the sedimentor and lifting it above the tank (There is a boot floor in the way
)But this thread makes me feel a little better about it. I was going to remove it without disconecting the hose but no idea where the bolt was to undo and was sure I could feel more than one bolt up there.
I have just read Snows thread about replacing his boot floor and that has a cracking pic of the top of the sedimentor.
Here it is, hope this is of help to others:
So which bolt do I undo to remove the sedimentor from the bracket so I can bring it down to take it apart?
Cheers
rollin danny
Well-Known Member
- Posts
- 1,231
Its the one in the centre on top of sedimenter. Put a plastic bag over it when you remove it to catch the fuel in.Hold it tight though its very slippy..........:doh:
stretchie_
Active Member
- Posts
- 476
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- Gloucester
Cheers mate, might have a go tonight if it doesn't start raining..
Top of your head, do you know what size it is?
If not it's alright a bit of fiddling will let me know
Top of your head, do you know what size it is?
If not it's alright a bit of fiddling will let me know
thebiglad
Well-Known Member
- Posts
- 7,387
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- Central France
It's 11mm and use a ring spanner it works much better.
I use an old ice cream tub to catch the slopped-out diesel when the bowl comes undone.
Sometimes after undoing the central bolt the bowl sticks to the rubber seal. If you find this, give it a tap with a rubber mallet.
stretchie_
Active Member
- Posts
- 476
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- Gloucester
You're a dude, thanks.
I have a ring spanner with ring ratchet on one end so that should make it easier
I have a ring spanner with ring ratchet on one end so that should make it easier
![[JP]](/data/avatars/m/29/29578.jpg?1437394565){kind=avatar}
[JP]
New Member
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- Newbury, Berks
mmhh... stretchie, let me know how you get on with this..
might give a go on mine, just to clean.
might give a go on mine, just to clean.
stretchie_
Active Member
- Posts
- 476
- Location
- Gloucester
DEAD EASY...
I got the seals and tap kit ready in advance
It's on the drivers side, infront of the rear axle and it's just below the boot floor.
Under the car, looking up from the passenger side over where the rear prop shaftmeets the rear diff you will see it on the drivers side
Haynes says to undo the fuel line, and hold it higher than the fuel tank to stop any fuel coming out but seeing as the boot floor is directly above it that might be hard so I left it connected.
In the middle on top of the sedmentor is an 11mm bolt holding it on, get yer ring spanner out as a socket or a ratchet type ring spanner would not fit over the top
Get a suitable container underneath once the bolt is loose, support the sedimentor then finish unscrewing. It may be stuck there cos of all the crap you off road beasts will have covered it in. So give it a tap if needed.
Right, then my camera died, and then my phone so no more pics.
The unit comes out in one piece but it is actually two, so I emptied all the crap, and there IS crap in there (for those who have been lucky enough to experience a blown head gasket imagine that murky scummy crap and then imagine it's thicker more scummy cousin).
Using a rubber mallet I tapped around the middle of it to seperate so I could replace the middle seal.
Up where you took the sedimentor from you will see a plastic cone like object, remove it and you will see a thread coming down with a small o-ring which was keeping that plastic cone in place and the other seal is around the outside part.
I rubbed all the bits down especially around the seal areas and then cleaned with parafin and let dry.
Put the seals in, put the two parts of the bowl together and then offer up and do up the bolt with your fingers to keep it in place then get your spanner back out and tighten back up.
Roberts yer mothers brother.
I got the seals and tap kit ready in advance
It's on the drivers side, infront of the rear axle and it's just below the boot floor.
Under the car, looking up from the passenger side over where the rear prop shaftmeets the rear diff you will see it on the drivers side
Haynes says to undo the fuel line, and hold it higher than the fuel tank to stop any fuel coming out but seeing as the boot floor is directly above it that might be hard so I left it connected.
In the middle on top of the sedmentor is an 11mm bolt holding it on, get yer ring spanner out as a socket or a ratchet type ring spanner would not fit over the top
Get a suitable container underneath once the bolt is loose, support the sedimentor then finish unscrewing. It may be stuck there cos of all the crap you off road beasts will have covered it in. So give it a tap if needed.
Right, then my camera died, and then my phone so no more pics.
The unit comes out in one piece but it is actually two, so I emptied all the crap, and there IS crap in there (for those who have been lucky enough to experience a blown head gasket imagine that murky scummy crap and then imagine it's thicker more scummy cousin).
Using a rubber mallet I tapped around the middle of it to seperate so I could replace the middle seal.
Up where you took the sedimentor from you will see a plastic cone like object, remove it and you will see a thread coming down with a small o-ring which was keeping that plastic cone in place and the other seal is around the outside part.
I rubbed all the bits down especially around the seal areas and then cleaned with parafin and let dry.
Put the seals in, put the two parts of the bowl together and then offer up and do up the bolt with your fingers to keep it in place then get your spanner back out and tighten back up.
Roberts yer mothers brother.
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