Replacing caliper pins - Alfa Romeo Forum
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Replacing caliper pins

Hi guys,

To try to counteract the knocking noises when driving over bumps I propose to change my caliper pins as two trusted garages advise suspension is sound, and already changed anti-roll bar.

What do I need to order? Is it a diy job?

Are loose pins likely to be dangerous, or, is it just an annoying rattle and nothing else?

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Re: Replacing caliper pins

You should be able to buy a brake servicing kit that includes 4 pins (2 per side) and the rubber dust boots.

When you take the old pins out, use some brake cleaner or other solvent in the hole to blast out any oil, grease and grit. Any rubbish in there is going to make your new pins gum up quickly.

If your old pins have rusted a bit, you'll need to use a bit of wire coathanger (or work the old pins in and out of the hole) to remove any flakes of rust etc. from out of the holes.

Eventually the holes will be clear and clean.

Before you put in the new pins try them in different holes to see where they slide in and out most easily. Some pins will be a nicer fit in some holes than others, so match up the "best fit".

The new pins come with white grease - clean off any gunge from above, make sure the pins are lubed up nicely with the white grease and then finally fit them.

The other thing to check is the carrier bracket. The pins may be worn but so too could the carrier bracket. There's not much to do about those except replace them (£££&#163 so try out the pins first.

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Re: Replacing caliper pins

Great tip Ralf, will try that myself too.
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Re: Replacing caliper pins

Are any anti-rattle springs which should be fitted missing or not properly fitted? Pins usually fit into rubber sleeves which should stop them rattling, so check thoroughly for other causes before changing the pins. It would be a good idea to take the pins out & check them first - if there are no obvious signs of wear, replacing them will be a waste of time.

I'm not sure which caliper you've got, but you'll probably need a 7mm hex driver ('Allen key') to remove them - it's a non-standard size, so it's not included in normal sets.

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Re: Replacing caliper pins

I got my pins changed for exactly the same reason - clonking noise from suspension area. Same comments from Alfa specialist - the suspension was sound.

I paid for 0.5 hr labour to fit the pins. I wonder whether it is worth your while diy at this rate? And it would be guranteed?

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Re: Replacing caliper pins

Are you sure its the brakes? I had clonk from my suspension, dealer had it could find nothing, fixed it by tightening bolt by way of an extra washer on the top bolt on the gas strut. Theres a thread on it in the GTA section. (Some confusion about a distorted bearing, but dont think it has a bearing!)
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