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Author Topic: Front brake caliper slider pins lube question  (Read 4438 times)

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Andy A

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Front brake caliper slider pins lube question
« on: 14 August 2018, 08:42:31 »

It it OK to use this silicone grease on the front brake caliper slider pins to lube them up? I already have this handy.




Or is there a recommended grease to use?
« Last Edit: 14 August 2018, 08:53:05 by Andy A »
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #1 on: 14 August 2018, 09:03:54 »

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Re: Front brake caliper slider pins lube question
« Reply #2 on: 14 August 2018, 10:21:38 »

I have started using red rubber grease on the caliper sliders on my cars after years of using copper grease.

It doesn't effect the rubber covers, has not deterioated like copper grease over time and has remained stable with high temeratures.

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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #3 on: 14 August 2018, 10:24:23 »

It looks fine with rubber but there is no mention of temperature.


EDIT
https://www.ebay.co.uk/itm/Granville-Red-Rubber-Grease-Hydraulic-Lubricant-Brake-Caliper-Piston-500g-Tin/302636723893?epid=8015691171&hash=item46768deeb5:g:P8UAAOSwEYBagfKS

Like this. Don't use copper grease.

I think but I'm not sure -40degC to +200degC found in this link. https://www.lubesetc.com/silicone-grease-lubricants-22-c.asp. Will send them an email.
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #4 on: 14 August 2018, 10:25:30 »

It'll probably be fine. The Omega is hardly a point and squirt car.
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Re: Front brake caliper slider pins lube question
« Reply #5 on: 14 August 2018, 12:06:58 »

It'll probably be fine. The Omega is hardly a point and squirt car.

I'll give it ago and if I get any problems will report back.  :y

Thanks all for your advice.  :y :y
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #6 on: 14 August 2018, 12:21:38 »

It'll probably be fine. The Omega is hardly a point and squirt car.

I'll give it ago and if I get any problems will report back.  :y

Thanks all for your advice.  :y :y
Glad to help, if indeed I did!
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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #7 on: 14 August 2018, 12:39:47 »

It'll probably be fine. The Omega is hardly a point and squirt car.

I'll give it ago and if I get any problems will report back.  :y

Thanks all for your advice.  :y :y
Glad to help, if indeed I did!

Any help or advice is always grateful.  :y
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GastronomicKleptomaniac

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Re: Front brake caliper slider pins lube question
« Reply #8 on: 14 August 2018, 13:06:25 »

IME, anything slippy will do. Copperslip. Grease. Margarine.
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #9 on: 14 August 2018, 15:07:05 »

IME, anything slippy will do. Copperslip. Grease. Margarine.

Please don't use just anything slippy. Copperslip soaks into the rubbers over time and causes the rubbers to swell. This can lead to ineffective brakes. I'm not sure on the other suggested lubes, but personally I'd use the proper stuff. Granted, the sliders are less of an issue than the piston seal and dust capm but still.
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Doctor Gollum

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Re: Front brake caliper slider pins lube question
« Reply #10 on: 14 August 2018, 15:22:46 »

It'll probably be fine. The Omega is hardly a point and squirt car.
Clearly never driven yours hard...

200° isn't enough. Use this at your peril.
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #11 on: 14 August 2018, 15:40:19 »

It'll probably be fine. The Omega is hardly a point and squirt car.
Clearly never driven yours hard...

200° isn't enough. Use this at your peril.

The reason I said 'probably' OK, is because whilst brakes get hot, the caliper brackets shouldn't be as hot as the friction surfaces. As most people measure the heat on the friction surfaces, I would have though 200 degrees is enough. But I'd use red brake grease in the first place.

EDIT

Urm, red brake grease specs....
1 x Granville Red Rubber Grease 500g Tin
...........
Specification Information
Operating Temperature: -20°C to +120°C

Which is a little worrying.
« Last Edit: 14 August 2018, 15:43:11 by deviator »
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Kevin Wood

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Re: Front brake caliper slider pins lube question
« Reply #12 on: 14 August 2018, 16:09:57 »

The boiling point of DOT4 brake fluid is only 230 C, so if the caliper support has got up to 200 C I think the grease would be the last of your worries, TBH.
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Re: Front brake caliper slider pins lube question
« Reply #13 on: 14 August 2018, 16:19:22 »

Food for thought*...

https://youtu.be/VEL9diENZY0

What happens to the front brakes on a heavy car used on an nsl dual carriageway with lots of roundabouts will get alot hotter for longer. If parked immediately after, then heat soak could become a concern.

*This test, whilst interesting, is on a light weight car which is stationary.
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Re: Front brake caliper slider pins lube question
« Reply #15 on: 14 August 2018, 16:51:33 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
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Re: Front brake caliper slider pins lube question
« Reply #16 on: 14 August 2018, 16:55:21 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
If I can induce brake fade between Horsham and Crawley, it comes as no surprise that he changes his pads every month ;D
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Re: Front brake caliper slider pins lube question
« Reply #17 on: 14 August 2018, 16:59:51 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
If I can induce brake fade between Horsham and Crawley, it comes as no surprise that he changes his pads every month ;D

I did that one with a 1700kg trailer with (as I later discovered) no brakes in July. ::)
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Re: Front brake caliper slider pins lube question
« Reply #18 on: 16 August 2018, 17:35:56 »

The banjo front brake washers from Vauxhall. Can they be fitted anyway round?

The reason I ask is that I seen a you tube video once but can't find it now that stated they should be fitted a certain way round.

Thanks
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Re: Front brake caliper slider pins lube question
« Reply #19 on: 16 August 2018, 18:08:18 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
And that's why I use LM on my sliders. And (proper) coppaslip on pad backings.

Across MK, if you try reasonably hard, you can exceed the limits of fresh, new DOT4.  200+ bhp, 1800kgs plus driver, small pads,  and if your unlucky, a need to come to a standstill every half a mile is hard on the brakes.
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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #20 on: 16 August 2018, 19:22:35 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
And that's why I use LM on my sliders. And (proper) coppaslip on pad backings.

Across MK, if you try reasonably hard, you can exceed the limits of fresh, new DOT4.  200+ bhp, 1800kgs plus driver, small pads,  and if your unlucky, a need to come to a standstill every half a mile is hard on the brakes.

Whats that in English money?  ???
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Andy B

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Re: Front brake caliper slider pins lube question
« Reply #21 on: 16 August 2018, 19:41:09 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
And that's why I use LM on my sliders. And (proper) coppaslip on pad backings.

Across MK, if you try reasonably hard, you can exceed the limits of fresh, new DOT4.  200+ bhp, 1800kgs plus driver, small pads,  and if your unlucky, a need to come to a standstill every half a mile is hard on the brakes.

Whats that in English money?  ???

1.8 tons  ::)
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Webby the Bear

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Re: Front brake caliper slider pins lube question
« Reply #22 on: 16 August 2018, 19:52:23 »

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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #23 on: 16 August 2018, 19:53:20 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
And that's why I use LM on my sliders. And (proper) coppaslip on pad backings.

Across MK, if you try reasonably hard, you can exceed the limits of fresh, new DOT4.  200+ bhp, 1800kgs plus driver, small pads,  and if your unlucky, a need to come to a standstill every half a mile is hard on the brakes.

Whats that in English money?  ???

1.8 tons  ::)

Now that's a lot of weight. Must be the bigger V6 engine.  :)
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Re: Front brake caliper slider pins lube question
« Reply #24 on: 16 August 2018, 20:18:15 »

Now that's a lot of weight. Must be the bigger V6 engine.  :)
They are all about the same, give of take 100kg depending on spec/gearbox
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Re: Front brake caliper slider pins lube question
« Reply #25 on: 16 August 2018, 20:51:08 »

From memory the handbook quotes a kerb weight for the F/L 3L Elite saloon as something like 1780lbs[could be slightly off on that figure]out of a 2200lb ton.Being pedantic 1800kgs is 1.8tonnes[not tons] :P ;D
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Re: Front brake caliper slider pins lube question
« Reply #26 on: 16 August 2018, 22:04:27 »

Nobody has mentioned the "TheBoy Milton Keynes" test, I notice. ::)
And that's why I use LM on my sliders. And (proper) coppaslip on pad backings.

Across MK, if you try reasonably hard, you can exceed the limits of fresh, new DOT4.  200+ bhp, 1800kgs plus driver, small pads,  and if your unlucky, a need to come to a standstill every half a mile is hard on the brakes.

Brings back memories of my mate's kit car when we were on our way to Ireland. From caliper stuck on a little, and got a tad warm, then the bearing grease melted, dripped out of the hub and melted the tyre sidewall on its way down. All from a triumph dolloposhite 1500 engine, and he didn't notice the drag until the bearing seized.
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Re: Front brake caliper slider pins lube question
« Reply #27 on: 16 August 2018, 23:19:27 »

From memory the handbook quotes a kerb weight for the F/L 3L Elite saloon as something like 1780lbs[could be slightly off on that figure]out of a 2200lb ton.
kilos  ???
2200lb isn't a ton it's a tonne  ::) ::) .... not that I'm being pedantic  ;) ;)

Quote

Being pedantic 1800kgs is 1.8tonnes[not tons] :P ;D
Indeed  ::)
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Re: Front brake caliper slider pins lube question
« Reply #28 on: 17 August 2018, 07:21:54 »

You're quite correct :y Where was my maths last night? :-[ There are of course 2240lbs to the ton :-*
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Re: Front brake caliper slider pins lube question
« Reply #29 on: 17 August 2018, 10:02:47 »

Food for thought*...

https://youtu.be/VEL9diENZY0

How about this test: https://www.youtube.com/watch?v=TPf4qwtr8Fs ;D :D :D

Slight brake bind, offside front. Pass and advise 😂😂😂

Well now I'm definitely bringing my cars to you for an MOT ;D ;D
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