Siezed rear Wiper pivot on E91

[DickieH]

Hi all,
Im new to the BMW side of PH and wondered if anyone can help me progress things. I have a badly seized wiper pivot and read various advice postings on what appears to be a relatively common problem. Anyway Ive followed the attached guide which was very useful and used loads of GT85
http://forums.bimmerforums.com/forum/showthread.ph...
Im at the stage where im trying to remove the unit from the tailgate glass so I can then service it properly and safely without risk to glass. Thing is the it just will not budge from the tailgate. Does anyone have any tips or ideas? I ve tried gently taps with rubber mallet and even hammer but no luck.

Any help/advice gratefully received.
DickieH
318i Touring (56 plate)

[VerySideways]

I had this problem on my last E91 - once you have taken the wiper arm off, and undone the nut and the circlip, the spindle WILL drop out eventually.

What i did was spray WD40 liberally and then swing the small arm on the inside from one side to the other, which progressively made the spindle spin more freely.
Eventually i could swing it from side to side quite easily, at this stage i used a rubber hammer and tapped it from the outside whilst also swinging from side to side on the inside.

Once it's out, you'll need to rub down the rust on the spindle and then apply something to prevent it happening again (i used liberal quantities of grease).

[DickieH]

Thanks verysideways, that's reassuring. The spindles not at the 'moving freely' stage yet, its still very stiff when I use a mole wrench so I need a little more patience by the sounds of it. Could take a while though I reckon. Its only out be about 10mm.
Cheers

[VerySideways]

Attach the mole grips to the arm on the inside of the rear window - have you taken the plastic shroud off yet? You'll see the spindle is attached to a small metal arm, gives you a decent amount of leverage.

[DickieH]

Yes taken plastic shroud off so got full access to the arm you mention. Just very very stiff with virtually no movement of the pin through the hole. Might try the twist and tap with a helping hand. Frustrating though as it will be a simple fix once out.

[VerySideways]

If you've taken the circlip off the outside then you're just fighting rust.
WD40 and elbow grease are your friends

[DickieH]

Finally fixed it!! It took patience and a bit of effort each evening but I finally got it out. Switched from GT85 to WD40 and WD seemed to be better. Now cleaned and greased and working..Thanks VerySideways really appreciate the advice..
DickieH

[VerySideways]

Well done for persevering!