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Replacing rear wiper arm
Posted: Mon Jun 29, 2015 9:15 am
by KMH
I'm feeling proud of myself for having replaced the two front windscreen wiper arms yesterday - no longer rust coated! But when I tried to remove the arm on the rear screen I couldn't - it seemed stuck fast (yes I did undo the bolt!) and any working of it just caused the rubber seal behind it to begin to pull away and break, so I gave up. I tried WD40 to loosen it, but no change. Does anyone have any advice, please?
Thanks!
Re: Replacing rear wiper arm
Posted: Mon Jun 29, 2015 11:33 am
by cmm303
Splines get a bit stiff. I used a puller on mine - to be exact, an old valve spring compressor. (Anything that resembles a G clamp but with a fork at the fixed end to slot behind the wiper. )
Re: Replacing rear wiper arm
Posted: Mon Jun 29, 2015 12:50 pm
by wonkanoby
Re: Replacing rear wiper arm
Posted: Mon Jun 29, 2015 1:18 pm
by Simon Jones
The wiper arm puller (often also described as battery terminal puller) is the safest option. You could try refitting the nut loosely (to protect the threads) & giving the nut a tap with a hammer to break the joint.
Re: Replacing rear wiper arm
Posted: Mon Jun 29, 2015 9:48 pm
by KMH
That's really helpful, thanks, everyone!
Re: Replacing rear wiper arm
Posted: Fri Jul 10, 2015 2:25 pm
by clutha
Same happened with me.
I have that 'chiller' aerosol spray, seemed to help after a lot of faff.
Plenty of water proof grease applied on reassembly.
The wiper motor shaft is steel, the arm 'hub is alloy. dis-similar metal corrosion methinks.