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Corrosion on rear door guiderails
#1
Any one tested refurbishing the upper and lower guide rails on the multispace MK2? On my car they are getting really corroded and the top film/paint for the wheels is gone. The doors still works but they don't sound nice closing. Any tip regarding what paint to use after grinding of the corrosion?
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#2
All you'll need is a wire brush and some wet or dry paper. A grinding disc
sounds like overkill to me! The best thing to refinish the rails may be powder coating.
I think it may also be prudent to take a look at the condition of the wheels.
I've never heard of anyone here having this problem.
[fon‌t=Tahoma, Calibri, Verdana, Geneva, sans-serif]The Older I get the Better I Was!  Cool [/font]
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#3
Mine are like this - the coating has peeled and if not cleaned frequently they are noisy to operate.

I haven't looked into any remedial work yet, just much washing and much WD40
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#4
Are they a die cast item, or pressed steel?

If they're cast, then the corrosion is pretty much impossible to banish without a level of work which would be uneconomical. You could stall the deterioration with thorough prepping and one of the "engineered" coatings (eg, Rust Bullet, POR-15, Epoxy-Mastic etc etc) that bonds decently to a clean substrate. Coatings like Hammerite are not even close to viable.

A pressed steel track could be readily blasted and zinc passivated, then etch primed/painted if desired.

Cheers, Adam.
[+] 1 user says Thank You to addo for this post
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#5
Having just replaced a rail, I'd say that the problem is probably caused by the wheel on the door getting seized and then dragging which destroys the coating on the track.
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#6
Where to find spares for rails and/ or wheels?
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#7
(01-11-2015, 08:02 PM)ojelun Wrote:  Where to find spares for rails and/ or wheels?

Breakers and dealers can help you.
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