Expansion tank cap removal

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Expansion tank cap removal

Post by bushwhacker on Fri Mar 13, 2015 2:44 pm

Bit of a silly question, I suppose, but does anyone know how to get the expansion tank cap off? The owner's manual only says to top up via the expansion tank when cold but does not say how to get the lid off.

It is a small round thing with two ears and with two hoses going into it. It will rotate until the hoses stop it but does not seem to be aligning any lugs with cutouts in order to release it. Neither does it seem to want to pull off. Now, I could force it but I don't want to break it nor do I want to risk splashing any antifreeze in my eyes.

Any ideas?

I was trying to check the level prior to topping up but I can't see through the tank properly. It does look as though it might be 50% overfull but I don't believe it so looking in through the top seemed a good idea. Doh!.


Last edited by bushwhacker on Sun Mar 15, 2015 4:53 pm; edited 1 time in total (Reason for editing : Forgot about the ears)
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Re: Expansion tank cap removal

Post by PFM on Fri Mar 13, 2015 5:22 pm

They just ease off - there should be 2 tabs on opposite points, if you pull on one it should come off easily. Surely you've had it off before though?

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Re: Expansion tank cap removal

Post by elfin girl on Fri Mar 13, 2015 11:06 pm

same way as the rad cap comes off?!
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Re: Expansion tank cap removal

Post by PFM on Sat Mar 14, 2015 10:37 am

No, rad caps need a twist, expansion bottle needs a pull - like screenwash bottle.

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Re: Expansion tank cap removal

Post by HighlyJetted on Sat Mar 14, 2015 10:45 am

Yeah, just pops off.
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Re: Expansion tank cap removal

Post by bushwhacker on Sat Mar 14, 2015 3:37 pm

PFM wrote:They just ease off - there should be 2 tabs on opposite points, if you pull on one it should come off easily. Surely you've had it off before though?

Nope. Had it since 2003 but never really needed to touch it until now although a garage has looked at it about three times.

Thanks anyway for your suggestions, it seems I just have to pull a little harder.
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Re: Expansion tank cap removal

Post by elfin girl on Sat Mar 14, 2015 7:58 pm

ahh, stupid me read that as expansion pipe!
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