OK - the deed is done. For the record, and to help other people tackle this job, this is the sequence.
These are the front suspension mounts. Note the corrosion after only 12 months and 6000 miles.
The Vaseline on the screw thread seems to have survived the winter, but the metal plate catches all the rain and mess that falls straight through the ventilation holes. I cleaned away the grot with a small wire brush, applied Loctite Rust Remedy, then coated the whole top mount with a generous coat of Waxoyl.
This is how FIAT engineered the suspension mounts on my wife's Cinquencento. (Designed 20 years ago and protected by rubber caps AND the bonnet).
The diameter of the rubber ring on the suspension mount is near enough identical on both 500 and Cinq. The main difference is the actual height of the suspension attachment assembly. This means that the Cinq rubber cap is too deep. I decided to leave the lower curly "brim" and reduce the height of the skirt to just a few millimetres using a pair of kitchen scissors. I put more Waxoyl on the inner locating ring, and the cap then easily stretched into place. (But watch your knuckles on the metal edges). You can tell it's properly located when it snaps into place.
I don't know the exact function of the lower "brim" - structural or cosmetic - but I decided to keep it as it covers the hole around the suspension mounting point, which is another water trap.
I purchased new caps from Big Mick at Eurocarcare http://www.eurocarcare.net/ but old ones from a scrapper would probably still be in good condition. New caps are just over a fiver each, which I hope will be a good investment as I hope to keep the car for many years yet.
These are the front suspension mounts. Note the corrosion after only 12 months and 6000 miles.
The Vaseline on the screw thread seems to have survived the winter, but the metal plate catches all the rain and mess that falls straight through the ventilation holes. I cleaned away the grot with a small wire brush, applied Loctite Rust Remedy, then coated the whole top mount with a generous coat of Waxoyl.
This is how FIAT engineered the suspension mounts on my wife's Cinquencento. (Designed 20 years ago and protected by rubber caps AND the bonnet).
The diameter of the rubber ring on the suspension mount is near enough identical on both 500 and Cinq. The main difference is the actual height of the suspension attachment assembly. This means that the Cinq rubber cap is too deep. I decided to leave the lower curly "brim" and reduce the height of the skirt to just a few millimetres using a pair of kitchen scissors. I put more Waxoyl on the inner locating ring, and the cap then easily stretched into place. (But watch your knuckles on the metal edges). You can tell it's properly located when it snaps into place.
I don't know the exact function of the lower "brim" - structural or cosmetic - but I decided to keep it as it covers the hole around the suspension mounting point, which is another water trap.
I purchased new caps from Big Mick at Eurocarcare http://www.eurocarcare.net/ but old ones from a scrapper would probably still be in good condition. New caps are just over a fiver each, which I hope will be a good investment as I hope to keep the car for many years yet.