arrghh plastic plug..

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twice_nightly

New Member
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179
Location
Carnforth, Lancashire
Anyone any tips on how I can the useless plastic plug out of the top of the thermostat housing on my 300tdi? The previous owner has managed to round the plastic off and I've tried cutting a slot in it but it won't budge.

I've already got a brass replacement but need to remove the plastic one to bleed the system as I've an air lock, resulting in a intermittant heater..just what I need this time of year!

Many thanks
 
cut two slots 90degrees apart and tap the smaller section out. Even better push some rag down the hole first, so you dont loose the loose bit into the housing. Or remove the housing first.

Or wedge summat into the hole
or drill 2 holes into it and use a pair of long nose pliers or C clip pliers to remove.
 
have you thought about drilling 2 holes,one at each side of the plastic plug,not all the way through so you dont get bits of plastic in your cooling system,then you could use some long nose pliers to undo it,put a screwderiver between the pliers if you need extra leverage. :)

hope this helps
 
Thanks guys, managed to get the plastic plug out with the advice given, however I got a small amount of the plastic debris in the housing, will this be a problem or should it be ok?

Also do you still need the rubber washer thingy when using brass plugs?

Cheers
 
my brass plug didn't come with a washer but i used a oil sump plug copper one and seems ok
plastic self bleed comes with rubber o ring
 
lazydog said:
my brass plug didn't come with a washer but i used a oil sump plug copper one and seems ok
plastic self bleed comes with rubber o ring
Click to expand...


Ah, I've re-used the rubber o ring that was under the plastic plug on the new brass one, is that not right then? Their doesn't appear to be any leaks, although I still haven't managed to fix my airlock problem! :mad:
 
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