Brake calpier Guide pin lubrication ?

DerekS · 23rd September 2009, 20:27

Ive just had a discussion with an ex mech (non Rover) who says that the brake caliper guide pin gaiters should be filled with copper grease.
Mine are quite dry,and so have all my other (pre 75 ) cars .
Whats the consensus of opinion on this please ?

Sorry cant type caliper , fingers got ahead of themselves .

Departed · 23rd September 2009, 20:40

Rover manual says 'lubricate guide pins with a suitable anti seize grease'.

T-Cut · 23rd September 2009, 20:44

It's usual to lube these with a copper rich type grease or a specially formulated brake lubricant. In any case, I think 'filling' them is ambiguous. If the guide pin system is filled enough to inflate the rubber boot, it is counter-productive and will either be expelled by lifting the boot, or by splitting it. As in most areas, a bit of common sense is better than a barrel of grease.

TC

DerekS · 23rd September 2009, 20:52

Yes I agree about 'filling' That was a slip of the tongue. But I havent found anything in Haynes, and Im surprised, cos as i said, Ive never seen any lube at all in previous installations . They all have been quite dry . Thanks for replies .

bl52krz · 23rd September 2009, 21:07

Quote:

Originally Posted by DerekS

Yes I agree about 'filling' That was a slip of the tongue. But I havent found anything in Haynes, and Im surprised, cos as i said, Ive never seen any lube at all in previous installations . They all have been quite dry . Thanks for replies .

we have just done friends car, 75 diesel connie. we used rubber grease as this seemed to be the best for the moulded insert. (rubber)?

T-Cut · 23rd September 2009, 21:13

Most guide pin systems use rubber bushes to position the guide pins. In that sense, a metal to metal lube isn't needed. I think the manufacturers apply a smear of rubber grease in there. After a while, this tends to go black and dry as the rubber wears on the pin face. It should theoretically function in a non-lubricated state, but it will probably lead to abraision of the bushes. A smear of a suitable lube is generally the best plan and it helps to protect against rusting.

TC

23rd September 2009, 20:27	#1
DerekS Posted a thing or two Rover 75 Tourer Join Date: Nov 2006 Location: Malpas Posts: 1,526 Thanks: 34 Thanked 118 Times in 89 Posts	Brake calpier Guide pin lubrication ? Ive just had a discussion with an ex mech (non Rover) who says that the brake caliper guide pin gaiters should be filled with copper grease. Mine are quite dry,and so have all my other (pre 75 ) cars . Whats the consensus of opinion on this please ? Sorry cant type caliper , fingers got ahead of themselves . Last edited by DerekS; 23rd September 2009 at 20:30.. Reason: tryping

23rd September 2009, 20:40	#2
Departed Retired -- Join Date: Jan 2007 Location: -- Posts: 3,785 Thanks: 0 Thanked 4 Times in 4 Posts	Rover manual says 'lubricate guide pins with a suitable anti seize grease'.

23rd September 2009, 20:44	#3
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	It's usual to lube these with a copper rich type grease or a specially formulated brake lubricant. In any case, I think 'filling' them is ambiguous. If the guide pin system is filled enough to inflate the rubber boot, it is counter-productive and will either be expelled by lifting the boot, or by splitting it. As in most areas, a bit of common sense is better than a barrel of grease. TC

23rd September 2009, 20:52	#4
DerekS Posted a thing or two Rover 75 Tourer Join Date: Nov 2006 Location: Malpas Posts: 1,526 Thanks: 34 Thanked 118 Times in 89 Posts	Yes I agree about 'filling' That was a slip of the tongue. But I havent found anything in Haynes, and Im surprised, cos as i said, Ive never seen any lube at all in previous installations . They all have been quite dry . Thanks for replies .

23rd September 2009, 21:13	#6
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Most guide pin systems use rubber bushes to position the guide pins. In that sense, a metal to metal lube isn't needed. I think the manufacturers apply a smear of rubber grease in there. After a while, this tends to go black and dry as the rubber wears on the pin face. It should theoretically function in a non-lubricated state, but it will probably lead to abraision of the bushes. A smear of a suitable lube is generally the best plan and it helps to protect against rusting. TC