Stuck bolts

Hi all, I'm really struggling with removing the caliper bolts on my disco mk1. I tried with a 13mm bi hex but they're so worn, it just slipped. Tried with a 12mm bi hex hitting it on, but no joy. Also tried carefully heating the caliper, but still stuck fast. I'm really stumped, any sudgestions? Also I found these are they any cop? Cheers all.

Invest in a set of Irwin Bolt Extractors!

Link

It may come to welding a bolt onto the rounded head. Soak with lots of WD40 after.Try forcing a smaller socket onto the rounded head first though and crack the bar with a hammer as a sudden jolt, rather than a gentle increase in leverage.

nut extractrs dont work to well on bihex bolts ,1/2 inch bihex socket is best to use not 13mm,hit the head of bolt ,hammer 1/2 socket on try if not hit again and repeat

Ok, well i'm not sure there is room to weld a nut on top of the bolt, as the caliper is in the way. And I've tried whacking a smaller socket on. I might give a 1/2" a try though, as the 12mm didn't really get any grip. And the link wasn't working, but yes I might get a set of them at some point. Cheers all, and I'll report back if i get anywhere.

bolt head has to be hit hard repeatedly and socket hammered on often to ensure head doesnt mushroom too much

apart from the the bolot bit, that's a true story.

better

Ok well partial success. The half inch bi hex has undone the bottom bolt a treat and I will remember from now on to use the 1/2 inch not 13mm. But the top bolt is still slipping. Cant get any purchase on it. Been trying that one with a 12mm bi hex as I said with no joy. Is there a 15/32nds bi hex socket?

hit the bolt head hard it will fatten the head some, enough for socket to get some purchase when hammered on

Ok, well I've dumped a ton of plusgas on, and I'll see what happens tomorrow. Hope that works. Really get fed up with stuck bolts, cos the previous 13 owners could blooming well do a bit of maintenance!

i heard you the first time.

get rid of thoughs fecking bi sexual sockets and get some singles.as mentiond hit the bolt head hard with a hamber or lage puntch to send a shock down it. once you get a grip use a bit of heat:beer2:

Spunka said:

get rid of thoughs fecking bi sexual sockets and get some singles.as mentiond hit the bolt head hard with a hamber or lage puntch to send a shock down it. once you get a grip use a bit of heat:beer2:

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hex sockets dont fit bihex bolt heads

Heat for 10 -20 seconds, let it cool for 30 or so then give it a decent spray with wd40 (or similar). Add a pair of Stillson's and repeat...

jamesmartin said:

hex sockets dont fit bihex bolt heads

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are they are external torx bolt heads then

do you meen these? there a feckimg **** invenstion ,trust land rover to use them

Bolt heads for dummies.

hex head bolt.

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bi-hex head bolt.

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torx head bolt.

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any questions?

GRATCH said:

any questions?

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Who won the Scottish F.A. cup in 1937?

dogsbody said:

Who won the Scottish F.A. cup in 1937?

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Some sweaties.