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05-01-17, 03:49 PM | #21 |
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Re: Front brake caliper overhaul...
i never buy OEM pads as the are wooden and carp the rear ones tend to get brittle and fall apart. Dunlop Pads (DP Brakes) are the best i have used to date.
lost count how many callipers especially SV ones i have stripped and rebuilt. when i started i done it 'old school' not knowing any better but we learn and adapt to find out what works and bring things upto date. if people were to go by the OEM manual then they would use brake fluid for the seals which as we all know is wrong but you still get people doing this and you still get people putting copper grease where it does not belong like the back of pads for instance which is still a common practice in such places as kwik-fit and the likes as that is what the so called mechanics have been taught. you also get people pumping out pistons and cleaning it with brake cleaner thinking that they are fixing a problem, you just have to look on youtube to see that. its amazing the amount of wrong advice people are given on such places as youtube but take as gospel due to not knowing any better. my advice is based on experience. |
05-01-17, 07:58 PM | #22 | |
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Re: Front brake caliper overhaul...
Quote:
Plus car calipers have had gaitors that cover the pistons for many years now so the calipers don't get the same bombardment at all. Last edited by Blapper; 05-01-17 at 07:59 PM. |
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05-01-17, 08:36 PM | #23 |
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Re: Front brake caliper overhaul...
The info here got me thinking so I have been reading up on which grease we should be using when it comes to brakes.
Now the reason I use silicone and recommend it on the slid pins is because that is what the service manual (Haynes) says to use!. RRG is not a good lubricant and should NOT be used on sliding pins, it can be used on the piston seals that is it. Some say use brake fluid on the seals, my experience of this has never been good as the fluid absorbs water and turns into a white powder which causes the seals to stick to the pistons. After spending an hour looking about the grease that should be used for the pins is this- https://www.dowcorning.com/content/p...it/80-3507.pdf It can be purchased here- http://www.ebay.co.uk/itm/BRAKE-GREA...item3ad6096461 After reading up I have changed my mind about using silicone on the sliders!, a tube of the above grease will shortly be in my tool box. |
05-01-17, 08:40 PM | #24 |
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Re: Front brake caliper overhaul...
I didn't have a contract on the Passat, and they asked me if I wanted it done at the 2-year service (and asked again every year after that), and I said "no" ... that's how I know it was never changed
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05-01-17, 09:24 PM | #25 | |
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Re: Front brake caliper overhaul...
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RRG is veg oil mixed with fumed silica (both are lubricants in their own right) with a melting point of 250-350c. as i have said its not good for high speed bearings but is good for sliding pins. i seem to remember that the veg oil is good old olive oil... Castrol R springs to mind dont waste your money or have the hassle with different greases when one will do. |
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05-01-17, 10:01 PM | #26 |
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Re: Front brake caliper overhaul...
Antifreeze it is however I think it is the Lithium it has added to it that makes it good for metal to metal lubrication, every thing I have read about RRG says it is not good for this type of lubrication.
how I miss the smell of Castrol R. When it comes to brakes I don't mind spending a few pennies to have the correct product. |
05-01-17, 10:57 PM | #27 |
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Re: Front brake caliper overhaul...
In my experience Haynes manuals are of very limited use.
As I have to buy grease anyway, I'll go for the Dow-Corning stuff. I use their specialised products for other non-bike related jobs and have a lot of faith in them. RRG for rubber, G-3407 for the pins, maybe a trace of copper grease for the piston/shim interface. Anybody know if pointy calipers fit curvies? |
06-01-17, 11:10 AM | #28 |
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Re: Front brake caliper overhaul...
What is not to like about Castrol-R, one whiff brings back so many memories, was based on Castor oil and is actually where the Castrol company name comes from.
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06-01-17, 01:26 PM | #29 |
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Re: Front brake caliper overhaul...
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06-01-17, 02:58 PM | #30 |
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Re: Front brake caliper overhaul...
By the way, are the standard factory-supplied caliper pistons made of stainless steel?
The material looked like stainless when I last gave the calipers a clean & grease ... |
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