Diff fill plug

[Jonny cobra]

Hi Guys hope you can help me .. Trying to get the fill plug undone ,, so very tight what do you guys use to free it up . I have tryed with a long extension bar with a adapter on the end . Fits the plug nice and snug.. but wont come loose .

Thanks Guys .. JC.

[ChimpofDarkness]

I have the same issue.

I'm about to enlist the help of my old friends Oxy & Acetylene.

My guess is there was some thread lock used on mine, it's efin tight

Careful and accurate application of some focussed heat is the only way I can see to free off.

I believe the plug to be M12 x 1.25.

I plan to have a new one on hand when the butchered old one comes free.

http://www.ebay.co.uk/itm/120906891697?ssPageName=...

[Jonny cobra]

So will that not damage any thing ??

JC

[ChimpofDarkness]

Jonny cobra said:

So will that not damage any thing ??JC

I'm not suggesting torching it out, just putting some heat on it.

Like I say a fine nozzle to put some focused heat rapidly into the plug itself and it should come free as it cools.

With some care I don't see any harm being done.

Open to any other suggestions though, but believe me my current plug is in there!!!!!!!!!!!!!!!

My experience in these situations is heat is the answer.

[Jonny cobra]

ok i do use heat to undo things at work . So i will give it ago
Thanks for your help ..

JC..

[Timward]

When I changed my diff oil when I first got my Chim the fill plug was properly stuck in there. I cleaned around the plug and then sprayed some plus gas around it and left it whilst I had a brew. After this I managed to free it off. Most of my problem was being able to get some proper torque on the fill plug as access is a nightmare for the rear fill point on the GKN.

So if you have some plus gas handy, might be worth putting some on to see if that helps.

[Jonny cobra]

I will give it a go first thanks...

JC

[haircutmike]

Or, remove fuel tank, (less then an hour) and tighten the diff mount bracket at the same time.

[Nosh]

haircutmike said:

Or, remove fuel tank, (less then an hour) and tighten the diff mount bracket at the same time.

So you have a 'wider' shot, or measurements outlining where the holes are?

And is this a GKN diff?

[haircutmike]

No wider shot.

I just measured the position from under the car, got it right first time.

The fibreglass is really thin on this bulkhead, only a couple of mm thick, not structural at all.
I did this in the first instance to tighten the diff bracket that should be at about 30 lbs and inpossible to tighten oroperly from below.

[Barreti]

I got mine off with loads of extension bars and an air impact gun in the wheelarch.

It took a couple of minutes of sitting with the gun on full oomph, but it eventually let go - with a hell of a bang.

[Simon says]

Barreti said:

I got mine off with loads of extension bars and an air impact gun in the wheelarch.

It took a couple of minutes of sitting with the gun on full oomph, but it eventually let go - with a hell of a bang.

Yes Ian but you have the fancy side filler GKN never understand how they get to be so tight anyways as they are tapered plugs that only need nipping up, strange when you think of all the times thay must of been renewed when they was dealer serviced Yeh right don't get me started on the TVR cars I have seen with fuel filters that have been fitted so long the maker & part number are in Latin

[Ribol]

Simon says said:

.............strange when you think of all the times thay must of been renewed when they was dealer serviced Yeh right don't get me started on the TVR cars I have seen with fuel filters that have been fitted so long the maker & part number are in Latin

Not to mention all the new sump plug washers they must get through ................. you are in danger of getting the brotherhood a bad name

[Alexdaredevilz]

Simon says said:

never understand how they get to be so tight anyways as they are tapered plugs that only need nipping up,

I don't know about that Simon, I had my one come out on my racing lawnmower and it seized up at full chat = lock up in to a tree

Ever since that I do them up real tight!

[haircutmike]

Alexdaredevilz said:

Simon says said:

never understand how they get to be so tight anyways as they are tapered plugs that only need nipping up,

I don't know about that Simon, I had my one come out on my racing lawnmower and it seized up at full chat = lock up in to a tree

Ever since that I do them up real tight!

Have you got a clip of that?

[Alexdaredevilz]

haircutmike said:

Have you got a clip of that?

[Barreti]

Simon says said:

Yes Ian but you have the fancy side filler GKN

I have the fancy doodah bits on my old Pre-cat ?
What is this world coming to

[Jonny cobra]

WooooHooooo Done it .. All sorted..

JC..

[Barreti]

Well don't leave us in suspenders JC
How man, how?

[Warwick67]

Just bought myself a Chimp and just struggled with the same problem. Changing all the oils / filters / etc, going to try and get rid of some of the rust....
Is that a half inch square drive on the diff plug? and how the hell do you get to it?