Painting rear drum brakes

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blazeguarder
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Painting rear drum brakes

Post by blazeguarder »

I'm looking for a bit of advice regarding my rear brake drums. They've got quite a bit of surface rust on them and so I'm looking to paint them since they are quite visible through my alloys. I've never painted brakes before so I'm looking for a few pointers...

My plan was to remove the drum, clean and treat the rust using a Hammerite product (can't remember the name :oops: ), spray the drums with Hammerite Smooth silver and then leave to fully dry before refitting. However, since Googling it, I've found a number of posts on other forums which refer to using high temperature brake paint, as hammerite isn't suited to the high temperatures produced by the brakes. Most of these posts were concentrating on callipers though, so is this particularly relevant to the rear drums as well?

Also, is there anything else that I should take into account? Any tips from anyone with experience in this would be appreciated.

Thanks in advance.
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zedzo
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Re: Painting rear drum brakes

Post by zedzo »

nothing wrong with painting drums and nothing wrong with hammerite either. weve done it lots of times. you dont even need to take it off, simply get sum sort of wire brush, give it a quick brush and apply the hammerite paint witha paint brush comes out perfect :D
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NMavs
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Re: Painting rear drum brakes

Post by NMavs »

Yeah like Zedzo Said, just a wire brush and paint bursh needed :D. Personally i used the high temp paint from halfords. Think it was like a £5er for a tub, which you can use about 10 times over. lol. Word of warning though, make sure you apply quite a few coats, because it does like to chip off with powerwashers, stones, etc. Took me a couple of hours or so to do all 4 calipers on me old 1.9 TDI. Have fun :D
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blazeguarder
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Re: Painting rear drum brakes

Post by blazeguarder »

Ace, thanks for the replies guys, really set my mind at ease.

Hopefully I'll finally manage to get it done this weekend!
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Re: Painting rear drum brakes

Post by RUM4MO »

Maybe its better to paint drums (matt) black so that they kind of "disappear" from view. I just think that its a bit cruel the way VAG use silver paint and that just shows up the fact that they are drums and it shows rusty streaks quite quickly as well.
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blazeguarder
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Re: Painting rear drum brakes

Post by blazeguarder »

Yeah, I was thinking about silver instead of black because I wanted to keep it as OEM as possible, but I think the hammerite silver is a lighter shade than the silver on my alloys, so I reckon it'll look a bit rubbish. Don't really want to draw attention to the fact that they are drums lol.

I reckon you're right about matt black though, makes it less visible. Black it is then!
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Re: Painting rear drum brakes

Post by aaronon »

Will you give us stage by stage photo's please? I was going to do this too :D

Will it mean that Volkswagen won't service my car if I start painting the brakes? :S
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Re: Painting rear drum brakes

Post by RUM4MO »

[quote="aaronon"Will it mean that Volkswagen won't service my car if I start painting the brakes? :S[/quote]

I would not think so, remember if VW had "finished" these drums well enough to withstand a few years of use, then you would not have needed to paint them.
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blazeguarder
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Re: Painting rear drum brakes

Post by blazeguarder »

Right, I've got a slight problem...

Went to take the drums off this morning, handbrake off, removed the screw, the N/S one came off easily but the O/S one seems to be rusted to the hub and is impossible to shift. I've retracted the brake shoes by lifting up the wedge key, but this hasn't made it any easier to shift. Its spinning freely, so the brakes aren't seized or anything. I've tried everything: tapping with a rubber mallet, forcing it, etc, but nothing seems to have an effect.

Does anyone have any idea how to free it? I've run out of ideas...
Thanks
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Re: Painting rear drum brakes

Post by RUM4MO »

blazeguarder wrote:Right, I've got a slight problem...

Went to take the drums off this morning, handbrake off, removed the screw, the N/S one came off easily but the O/S one seems to be rusted to the hub and is impossible to shift. I've retracted the brake shoes by lifting up the wedge key, but this hasn't made it any easier to shift. Its spinning freely, so the brakes aren't seized or anything. I've tried everything: tapping with a rubber mallet, forcing it, etc, but nothing seems to have an effect.

Does anyone have any idea how to free it? I've run out of ideas...
Thanks
I think that you will just need to get a bit rougher with the way you are using the mallet - these drums are tough and so is rust, so you really need to whack them both "IN" towards the hub out near the edge and also "IN" towards the brake shoes - after that abuse it should be slack.
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Re: Painting rear drum brakes

Post by NMavs »

I wouldnt of even bothered removing the drums mate. Just simply mask up any parts you dont wanna get covered in paint, and let yourself loose with the paint brush :D. After all, your only bothered about the parts that you can see aren't you? It should only take you half an hour or so to a few coats on the back drums matey.
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blazeguarder
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Re: Painting rear drum brakes

Post by blazeguarder »

@ RUM4MO: Thanks a million for the advice mate, really helped me a lot. I was initially worried about damaging the drum, so I wasn't hitting it too hard, but a few decent whacks with the mallet sorted it out :D

@ NMavs: Yeah, I only took them off because I found a spray can of Hammerite satin black that I bought for something else and never used, so I decided to use that instead. Aside from one being completely rusted on and being a bit of a pain to remove, it worked out alright in the end as it meant that I could get pretty much all of the rust off the entire drum with it on the bench, so hopefully the new paint will last a bit longer.
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blazeguarder
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Re: Painting rear drum brakes

Post by blazeguarder »

aaronon wrote:Will you give us stage by stage photo's please? I was going to do this too :D

Will it mean that Volkswagen won't service my car if I start painting the brakes? :S
I've got a couple of photos, but to be honest its a pretty simple job, only issue I've had was that I couldn't get one of the drums off because of the rust, but RUM4MO's post above was really useful in shifting it. I only took them off as I was spraying them instead of using a brush, but as others have said, removing them isn't really necessary, as you can brush the paint on. Otherwise, its basically just get the back of the car up on axle stands, remove the wheels, use a wire brush to remove as much of the rust as possible, paint (but leave the mating face between the drum and wheel paint free), leave to dry, put the car back on the deck, admire rust free drums.
Only other thing is that the Hammerite spray paint seems to be taking quite a while to dry. I used Hammerite satin black and the finish is excellent, but looks like I'm not going to be able to get round to putting the car back on the ground till the weekend now :(

I don't think that VW will take an issue with it, to be honest in satin black it looks pretty OEM anyway. If they painted it properly in the factory then it wouldn't be an issue, and it's not like the paint is going to reduce brake life or anything, so I don't know what they could possibly find fault with.
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