brake caliper removal ?

[land-def-90]

hi set about changing front wheel bearings on my 200tdi this aft, didnt get far :doh:as i cant seem to unbolt the brake caliper  the bolts just will not budge and im worried about rounding nuts off :-k i would normaly apply loads of heat but dont want to damage caliper... any tips chaps as i need landy on road for driffield show regards iain

[clbarclay]

One trick for dealing with sized bolts is to just tighten them up a bit first as this can crack the corroded bond.

[crazymac]

Applying lots of heat will in the worst case scenario melt the seals in the caliper which are easily replaced, so I wouldn't worry [-o<

The trick of tightening is a great one, get some penetrating fluid in 1st and go for it.

[Lumbering Jack]

I'd give that freeze spray stuff a go - bit like wd but cools the bolt down and usually manages to break the bond enough to undo it.  We have the Wurth one at work but sure other companies make one.

[land-def-90]

thanks for the advice  ;) will let you know how i get on, cheers Iain

[SimonHarwood]

It would also be a good idea to use a single-hex or surface-drive socket instead of the more usual double-hex type.

[Eeyore]

Possibley not in this case. If memory serves, the caliper bolts have a 12 point head requiring a 14mm bi-hex socket - I had to buy one specially for doing mine (all my sockets are six point!).

Once the thread lock on the bolt has been broken, it shouldn't take too much effort to wind them out, but breaking that threadlock can be a complete pain.

Cheers
Eeyore

[V8MoneyPit]

The front bolts on mine are the bi-hex design as you say. It's a 1988 90. The rear axle came from a 200tdi Disco and has hex bolts!

IIRC, they are torqued to about 60 lbs/ft, so you may need a breaker bar to get them moving.

[Defender]

I found with mine that once I'd made sure the correct ring spanner was seated properly, it needed a good whack with a large hammer to shock the bolt free & break the thread-lok bonding.

[land-def-90]

thanks guys, in the end i borrowed a tool off a mate of mine its like a round socket with teeth in it which kind of makes a reverse thread, you just tap it on end of nut then get a bar on it the harder you pull the deeper it digs into nut , it had no probs and is a fantastic piece of kit, a must for all landy owners :clap:

[Eeyore]

For anyone else who was following this thread - its a 13mm bi-hex, not 14 as I said!  :oops:

[land-def-90]

all sorted now, :dance: thought i should buy some new bolts for calliper  from main dealers  :-k cost me £5 each and you can only buy them in bags of 5  :-k £25 for 5 bolts, day light robbery [-X

[Eeyore]

Ouchie! 

[davidlandy]

jeez - got 2 here for the price of a first class stamp.