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Apr 21, 2012 17:14:27 GMT
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Right, I finally got round to tackling the rear wheel bearings on the Golf today.
The N/S was a doddle, everything came off nicely.
I've come to the O/S and the two 8mm allen head brake carrier bolts have rounded off, I think they were originally put in by Fred Flintstone.
I've tried hammering a socket over them, no good. I've tried hammering a slightly larger hex socket into them, no good.
I have no access to a welder and I'm thinking about grinding the heads off and then drilling the thread out once the carrier is off?
Access to the top one is a bit cack too.
Anyone got any advice???
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1993 Mercedes-Benz 190e LE in Azzuro Blue.
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Apr 21, 2012 17:20:34 GMT
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Have you tried hammering a splined key into them?
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1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
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Apr 21, 2012 17:20:37 GMT
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Personally, I'd be drilling them out and then heli-coiling them.
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Apr 21, 2012 17:21:04 GMT
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Hammer in a male torx socket of suitable size, or a ..... dunno what they are called, similar to torx but with loads of finer splines. I bought a set to remove head bolts from an old VW golf and they have been dead useful for undoing broken stuff.
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1986 Panda 4x4.
1990 Metro Sport.
1999 Ford Escort estate.
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tardis
Part of things
Posts: 38
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Apr 21, 2012 17:27:02 GMT
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^^What dave said, try using a male spline socket, easier to hammer in as they have 12 splines instead of 6 like a torx driver, you should be able to get some cheap ones from the likes of machine mart.
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tardis
Part of things
Posts: 38
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Apr 21, 2012 17:31:20 GMT
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froggy
Posted a lot
Posts: 1,099
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Apr 21, 2012 17:31:28 GMT
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Ribe bits are pretty good but a torx normally works . Get something in the hole to clear any curse word out as it will give you a bit more depth to batter the torx or whatever into it .
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Apr 21, 2012 17:53:11 GMT
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If you grind or drill off the heads then if you can then remove the caliper I assume there will be enough exposed plain shank to hopefully undo with a stud extractor (or Mole wrench). However I'd do as other suggest and hammer in a 12 sided spline drive key first.
Paul H
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Apr 21, 2012 18:17:35 GMT
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I feel you pain. I had similar problems with my Golf.
I did it with a combination of methods. On one I used Irwin Bolt removers. On the second, the bolt removers didn't bite for some reason (no shoulders on the bolts mean that it's sometimes not possible to use them) so I welded a nut on and undid it that way (I know you said that you have no access to a welder though).
I'd imagine drilling them out would be an utter nightmare. Possible, if you can get the drill in there, but I think I'd be suicidal by about halfway through the first bolt! ;D
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Last Edit: Apr 21, 2012 18:20:03 GMT by BenzBoy
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Apr 21, 2012 18:46:12 GMT
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Seem to remember I used these, Irwin bolt removers, on my Jetta  They've come in handy so many times since they are well worth the money. |
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I'll get hold of some spline sockets. If that doesn't work, I'll grind the heads off and get the thread out once the carrier is free.
WHY did VW decide to use these sort of bolts on a parts of the car which get wet and warm??
It was going so smoothly......I should have known better ;D
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1993 Mercedes-Benz 190e LE in Azzuro Blue.
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If you disconnect the shocks I'd suspect the axle beam can then be lowered (with chassis rails on axle stands) so you can have better access.
paul H
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ChasR
RR Helper
motivation
Posts: 10,309
Club RR Member Number: 170
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Rounded off carrier hex bolts!ChasR
@chasr
Club Retro Rides Member 170
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Another shout for Irwin bolt extractors. However, due to corrosion etc. you may not use the same sized socket on both or at least I found that on some severely corroded bolts.. They really do get you out of tricky situations!
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Another shout for Irvin wotsits, they are expensive, but well worth it!!!
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povey
Part of things
Posts: 700
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Apr 22, 2012 10:55:48 GMT
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That happened to me with my mk3 golf, I used easy outs 34 quid on eBay they worked a treat :-)
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Apr 22, 2012 11:23:55 GMT
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Seem to remember I used these, Irwin bolt removers, on my Jetta They've come in handy so many times since they are well worth the money. This. They are incredibly useful, even if this case they don't work. They're not expensive, £20 for a set of 5. |
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RobinJI
Posted a lot
"Driven by the irony that only being shackled to the road could ever I be free"
Posts: 2,995
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Apr 22, 2012 11:24:19 GMT
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... WHY did VW decide to use these sort of bolts on a parts of the car which get wet and warm??... Because they didn't count of so many mechanics not having a clue how to use an Allen key  They're fine if they're not rounded, but like you've found, by the time the cars racked up a few miles and years on the road, it's normally had the caliper bolts and the driveshaft bolts rounded off by someone who doesn't have a clue how to use anything other than a hammer. I'll admit they're not the best quality bolts, and can round on their own, occasionally, but they're fine 99% of the time if no ones got there before you. |
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Apr 22, 2012 12:08:36 GMT
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Have to admit, i have a set of them Irwin removers. Worth there weight in gold, when all else fails. Always worth drowning them in penetrating fluid too.
Just my 2 pence worth, good luck.
Hutch
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 Its a bit of an ANIMAL |
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Apr 22, 2012 19:17:35 GMT
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Bash the bolt round with a proper flat chisel and big hammer. Aim the chisel at the side of the bolt head roughly perpendicular - give it a good few clouts until it makes itself a groove, then drive the bolt round and out.
It'll cost nothing and will almost definitely get the bolt moving.
No need to grind anything, and you should have enough access just by removing the wheel.
Out of the last 3 pairs of golf calipers I removed, 10 of tht bolts were rounded and every one flew out with this method.
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Apr 25, 2012 15:46:24 GMT
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Have you tried filling the head with screw grab and using the original allen bit? It's designed for rounded off screws but works with bolts and pretty much anything that it's possible to round off. This is the stuff I use. www.schraubendoktor.de/But I have no idea where you can get it from in the UK. I assume there are equivilents. It's a gritty paste that helps the tool bite into the head of the fastener. |
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They're fine if they're not rounded, but like you've found, by the time the cars racked up a few miles and years on the road, it's normally had the caliper bolts and the driveshaft bolts rounded off by someone who doesn't have a clue how to use anything other than a hammer. I'll admit they're not the best quality bolts, and can round on their own, occasionally, but they're fine 99% of the time if no ones got there before you.
