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brake calliper torque setting
Posted: Mon Jun 27, 2011 9:01 pm
by phil82
Hi there,
I just did the rebuild of some 7.5" brake calipers. Well during this rebuild I also splitted the two halfes of the calipers and know I face the problem that I can't find the correct torque value needed to put them back together.
Any idea?
Thanks a lot!
Re: brake calliper torque setting
Posted: Mon Jun 27, 2011 9:05 pm
by phil82
I just had the right idea a little late - searched in the old forum and found it...
Re: brake calliper torque setting
Posted: Tue Jun 28, 2011 8:37 am
by Vegard
So for reference, what was it?
Re: brake calliper torque setting
Posted: Tue Jun 28, 2011 9:05 am
by guru_1071
300-340 ib/in
37-38 nm
Re: brake calliper torque setting
Posted: Tue Jun 28, 2011 3:35 pm
by Giff
I think lbs/in should be banned...
Re: brake calliper torque setting
Posted: Tue Jun 28, 2011 5:13 pm
by phil82
45 lb/ft according to calver - well now we have two values...
Re: brake calliper torque setting
Posted: Tue Jun 28, 2011 5:34 pm
by guru_1071
phil82 wrote:45 lb/ft according to calver - well now we have to values...
thats too much
45 lb/ft = 540 lb/inch / 61 newton meters
my data comes from the current ap technical sheet that comes with the new bolt & seal kit...........
Re: brake calliper torque setting
Posted: Tue Jun 28, 2011 6:28 pm
by phil82
ok, that sounds like a good source!
I have heard of 39Nm for the 4piston aluminium calipers and thus trusted those 61Nm for the standard items. But if that's the official value from AP then I will take that. Luckily I haven't torqued them down yet.
Someone else (not from this forum) gave me the advice: as strong as possible - never had any problems with that...
Re: brake calliper torque setting
Posted: Wed Jan 04, 2012 9:02 am
by Vegard
By the way. Do you guys use hardened washers when mounting caliper halves? To me it seems like a good ida as the caluiper material is hardly hard
The same issue goes through my head when fitting the brake shields or the brake hose protector. These are soft as jello, so would definitely screw up the torque settings after a short while.