Funki Posted September 2, 2006 Report Share Posted September 2, 2006 I'm replacing my front discs and pads and was worring if threadlock is need or not for the caliper retaining bolts. The Haynes manual doesn't say anything about threadlock for this car but rumors suggest that this varies from differing Haynes manuals for different cars! What is the official Audi/VW policy on this? What would you suggest? Link to comment Share on other sites More sharing options...
JimLoskot Posted September 2, 2006 Report Share Posted September 2, 2006 I would think it very unlikely but thats just my opinion. Not heard of this on any car before. I put copper slip on mine Link to comment Share on other sites More sharing options...
Funki Posted September 2, 2006 Author Report Share Posted September 2, 2006 I have reason to believe that threadlock was applied to the bolts from the factory as there was a blueish residue on the caliper bolts upon removal and even after 'breaking' the bolt, there was significant resistance to the bolt such that I couldn't use my hands to finish loosing the bolts. Link to comment Share on other sites More sharing options...
Atomic Posted September 2, 2006 Report Share Posted September 2, 2006 On my A8 the replacement pads (oem and non...) typically come with replacement bolts. Those always have the blue band you mention. Not sure if it's actually threadlock but it serves a simular purpose. Link to comment Share on other sites More sharing options...
Paul Posted September 2, 2006 Report Share Posted September 2, 2006 My (porsche brake kit) bolts had something on them from manufacture. There seemed to be plenty left on them so I just reused them. had no issues. nobody loctites wheel bolts. many people copper slip them athought there is arguments fore and against that, and rarely do people torque them up, so in the large scheme of things id say you be pretty safe. Link to comment Share on other sites More sharing options...
Funki Posted September 2, 2006 Author Report Share Posted September 2, 2006 I've done some more research: Loctite do two main types of threadlock, Red grade which is semi-permanent (practically superglue - get the impact wrench out!!) and Blue grade (milder threadlock, breakable with a hand wrench). Apparently the Blue stuff serves a dual purpose, one to protect the threads from corrosion and to prevent vibration and heat/cold from working the bolts loose over time. Question now is should I use some!? Link to comment Share on other sites More sharing options...
Paul Posted September 2, 2006 Report Share Posted September 2, 2006 Mine iirc were green, but in hindsight, im thinking it was just corrosion inhibitor. Bit like annodising. its upto you, it wouldnt bother me too much. Link to comment Share on other sites More sharing options...
sitas3 Posted September 2, 2006 Report Share Posted September 2, 2006 I've had my brakes off on my 2 S3's and and S4 multiple times and never bothered with thead lock. Just make sure they're torqued up properly. Link to comment Share on other sites More sharing options...
Tobes49 Posted September 4, 2006 Report Share Posted September 4, 2006 It the bolt head washer has grooves, that the locking device. But a spot of blue wont do any harm. Link to comment Share on other sites More sharing options...
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