Mr Whippy
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| posted on 31/10/17 at 12:30 PM |
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grease for brake slave cylinders
Hi,
My old landy as usual has issues with the steel slave cylinder pistons corroding onto the aluminium cylinders which is kind of a design flaw as the
bottom ones face up catching water inside and never get hot enough to dry them out. It's a simple fix to clean them up but a complete pain to
have to do this regularly, things being quite heavy on it.
Two of the slaves didn't seem to be an issue but I notice they seemed to have some sort of clear grease inside the boot, is this a special
type?
The brakes use Dot 4 currently.
Any suggestions? thanks
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r1_pete
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| posted on 31/10/17 at 02:44 PM |
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I put some red rubber lube on the pistons before sliding them in, when the boots are on a nice bead of lube remains and keeps things nice and free.
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Angel Acevedo
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| posted on 31/10/17 at 02:56 PM |
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Would you be willing to go the extra work to anodise the cylinders?
Anodising is more resistant to water caused corrossion than bare aluminium...
Also, corrosion may not be from external water, but from water absorbed by naturally hygroscopic brake fluid.
Maybe bleeding your brakes more frequently may alleviate the problem...
Beware of what you wish.. for it may come true....
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02GF74
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| posted on 31/10/17 at 05:27 PM |
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Castor red rubber grease.
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fregis
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| posted on 31/10/17 at 07:29 PM |
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for pistons lubrication i use ATE 03990205012 Cylinder Lubricant
https://www.amazon.co.uk/ATE-03-9902-0501-2-03990205012-
Cylinder-Lubricant/dp/B004RAVYDG
Never be afraid to do what you are insolvent, remember: amateurs built the ark - Professionals built the Titanic.
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Mr Whippy
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| posted on 31/10/17 at 09:36 PM |
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tbh I'd never heard of either of those products, they both sound superb
at last this problem seems solved  thanks
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907
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| posted on 1/11/17 at 03:09 AM |
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quote:
Originally posted by Angel Acevedo
Would you be willing to go the extra work to anodise the cylinders?
Anodising is more resistant to water caused corrossion than bare aluminium...
Also, corrosion may not be from external water, but from water absorbed by naturally hygroscopic brake fluid.
_______________________________________________________________________________________
Maybe bleeding your brakes more frequently may alleviate the problem...
___________________________________________________________
When did it last have a fluid change ?
Paul G
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mcerd1
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| posted on 1/11/17 at 08:50 AM |
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quote:
Originally posted by Mr Whippy
tbh I'd never heard of either of those products, they both sound superb
I'm still working my way through a tin of 'Lockheed rubber lube' that my dad inherited from my great uncle who retired about the
time I was born  (I'd guess its ~40 years old ! )
keep thinking I should invest in a new tin - but it still works well (its black just like some of the stuff that comes in sachets with new calipers
etc..)
-
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Mr Whippy
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| posted on 1/11/17 at 01:08 PM |
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quote:
Originally posted by 907
quote:
Originally posted by Angel Acevedo
Would you be willing to go the extra work to anodise the cylinders?
Anodising is more resistant to water caused corrossion than bare aluminium...
Also, corrosion may not be from external water, but from water absorbed by naturally hygroscopic brake fluid.
_______________________________________________________________________________________
Maybe bleeding your brakes more frequently may alleviate the problem...
___________________________________________________________
When did it last have a fluid change ?
Paul G
seriously only takes half a year and they start corroding and it pulling to the side. I got some of the red grease, weekend job to grease them up and
bleed the brakes yet again, I have an easybleed so not too onerous
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