urgent help need with this part

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eurotrotter
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urgent help need with this part

Post by eurotrotter »

has anyone got this screw:

https://picasaweb.google.com/1096236004 ... 2068003170


http://i218.photobucket.com/albums/cc26 ... Bleed2.jpg


i have an interview for a job thursday 3 hrs south, and i cant get to my pug dealer til teh weekend

i will pay good money for one

thanks
KevMayer
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Post by KevMayer »

Why not try a short M6 bolt for now with the original seal.

You can get these at Halfords or even B&Q.
Cheers, Kev

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eurotrotter
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Post by eurotrotter »

its too long :(

there either 16, which is too short or else 20 long which is too long
addo
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Post by addo »

Stack brass or stainless washers under the head, and use the 20mm long socket head capscrew. It may weep, but coolant loss will be miniscule.
eurotrotter
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Post by eurotrotter »

the fact that mine is hollow, and has a small whole in it, as seen in the this pic, could i damage the engine or cooling system by using a normal socket cap?

https://picasaweb.google.com/1096236004 ... 1697299826
addo
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Post by addo »

No. The hole and bore exist to bleed coolant by only a slight loosening of the screw.

To bleed with a conventional capscrew you need to back it almost right out - messier and slightly less convenient, but works fine. I have a stainless capscrew in the 405 after a similar failure to yours; got the official brass one but haven't been organised enough to swap it in!
eurotrotter
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Post by eurotrotter »

interesting, that's interesting that its just there to help it bleed easier, but if i use a load of washers, will that mean it could loosen?

another point, the thread pattern looks a bit weird to me onthe gold screw, or are m eyes acting up?

is it an m6 screw by the way?
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Post by Peter.N. »

Wrap about 10 turns of PTFE tape around the screw or put some silicon sealant on it and allow to set before replacing it.

Peter
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Post by eurotrotter »

hi pete, why do i need to do this?
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Post by Peter.N. »

Just to seal an ordinary screw to stop it leaking.

Peter
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Post by eurotrotter »

thanks peter!
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Post by eurotrotter »

just to let ye know that it isn;t an m6 socket cap, its bigger than that, i tried fitting an m6 and it just glided in, so i guess its an m7/m8 or whatever the next size up is!

thanks!
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Post by Xantidote »

:( well I'm sure you'll find a bolt to fit. Just cut it to the length you require, and clean up the ragged bolt end with a file so the bolt threads nicely into the housing. I'd have thought either PTFE tape wrapped around the thread, or a copper or fibre washer under the head would do - whatever you have to hand.

I guess the original bleed screw won't be as strong as any replacement ordinary bolt, because the original had had the centre drilled out. Perhaps the original bleed screw was not of a very high grade/strength metal?
Martin

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Post by spider »

My post disappeared from this topic yesterday :?:
Andy.

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Post by RichardW »

It should be M6:

1306 29

01 DRAIN SCREW
DIAM 6X100-18
- DW10 TURBO DIESEL

If it goes in without touching the sides, it has perhaps been overtightened (hence broken!) and stripped the threads in the alu housing? If you've got one that's a couple of mm too long it won't do any harm - just check it doesn't foul the thermostat.
Richard W
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