The allen bolt head rounded off, so after a lot of swearing i cut a slot into it but it still wouldn't budge, even using an impact driver.Mate saved the day again as he had a blow torch and the heat freed it enough to undo it.Ran out of light so i'll put the new disc on tomorrow now.Had an issue with my new PR4 tyre as well.We reckon it may have been at the bottom of a pile of tyres which made it a bit narrow, so even with a ratchet strap my mechanic couldn't get any air into it.Fortunately he happened to have another tyre there and he put that on for me instead, which was lucky.In etween dropping it off and picking it back up i spent a couple of hours servicing and regreasing all of the brake calipers so i've had a productive day, albeit a lot longer than intended plus it was bloody freezing outside. I've decided i'm not going to use threadlock this time, i'm gonna dip the bolts in engine oil then torque them up.I might check them every few months anyway but i don't reckon they'll budge at all.
LOL! As said in another post a few days ago opinions are like arse holes everyone has one.Best do your own thing that you are happy with, cos one person will say one thing and another something completely opposite.Just keep a check on the bolts, if one did come loose it is unlikely to come out and lock the rear wheel, they are spinning at an incredible rate of revolutions and the fists bolt that touches the caliper will make such a din you will pull over to see what it is. (Be like the old clothes peg and piece of plastic you had on your pushbike you had flicking against you spokes as a kid)My guess would be that the bolt would only come undone a few turns before it touched the caliper and I'm sure all 5 or is it 6 will not all come loose at the same time.Anyway good luck with whatever you decide to do Darrsi, your the man who makes the final decision, don't take any notice of anything I say as I am a suicide pilot.
If it makes you feel any better, I tried to do my front discs yesterday. 11 bolts fine. 1 bolt rounded out. Smacked in a slightly bigger imperial allen head socket and had a go with that, and it sheared the bolt - below the level of the wheel hub Attacked it with a drill, got the centre out and tried some bolt extracters. Got them to bite on the bolt, but it's stuck fast Drilled out out as far as I could without going into the threads, but still no joy. I've been out and bought a 6.8mm drill bit and an M8 tap to try as a last resort.The PR4s are a toughy to fit. I've had 2 and neither wanted to seal the 'normal' way. The trick I used (borrowed from a fitter) is to fire a burst of un-restricted compressed air down the bead rather than through the valve. There's a proper tool to do it (Bead Cheater?), but that's expensive, so I just hooked up a piece of hose pipe to the compressor outlet and it worked just as well.
I bought the spares ahead of the job, but that's not the problem - It's being able to put it them in again.Browsing ebay for spare wheels locally now...
Too late now. The 6.8mm got the remains of the bolt out and I cleaned up the threads with a tap. All looked good until I tried to torque them and the thread gave way.I'll have a look at threaded inserts next, but I'll have to get another wheel, as I need to be back on the road next week.
just wondering if anyone has had success using a manual impact driver on thesei.e the one you hit with a hammer not the 'Buzz gun'as it is a hammer thump and a turn in one where a buzz gun is more just rotational whacks?just a thought
its another one of those tools i have been meaning to buy for ages but when i need one i find another way (cant wait for delivery)and then i forget about buying one untill i next need one and the cycle repeats itselfgetting 5 out of six easily out definatly says its worth having one for that job though considering the problems others are having
Impact drivers can definitely get you out of here shit. The trick in my experience is to use it first, once any button head Allen bolt starts to get rounded they are always a bit of a game. Sometime you can knock a Torx bit in instead if it rounds. Never done the Fazer disc bolts but had a game on other bikes over the years. Luckily no defeats though 😀