CB200 - Seized swingarm bolt.

Anyone know a clever trick to shift a seized swingarm bolt from a CB200?

TIA.

 

Penetrating fluid (not WD40), heat and a hammer 'n drift.

 

Heat and lots of it.


--
Beav

VN 750
Zed 1000
OMF# 19

 

Angle Grinder and / or shaped C4 charges.

 

Probably!

 

Something tells me I'm not going to get away with not stripping the frame.

 

What kind of penetrating fluid? - I've got GT85 with PTFE.

Someone else told me "getting it to turn is half the battle", problem is the
bolt head on the end of the spindle is a bit shallow - not much to get hold
of with a socket.

 

Plusgas, heat, and a *big* metal bar welded to the end of it.

Best of luck!

 

If it's that badly seized you may have to do what I've done in the past
which is hacksaw through the effing thing.

 

My FIL had a 24 ft sailing death trap that I used to look after the
donkey on. Owing to salt water ingression there were always some
stubborn bits to shift - this was the preferred gear
http://www.twmotorinc.co.uk/vmchk/Car-Care/Rost-Off-Plus-300ml/flypage.t
pl.html

Definately not cheap, but it works.

 

It crossed my mind to stick a socket on the spindle bolthead and aim a
welding rod in through the 1/2 drive square hole, getting the bolt head red
hot might do some good as well, but just for fun I might stick the socket on
an impact driver first.

 

If you use heat to free it off you need to use enough to make sure
that the bores expand more than the spindle and that needs a *lot* of
heat because as the metal expands it'll initially grow into the bore
before the whole lot goes outwards.

If it's got a grease nipple on the end of the swinging arm spindle
force as much grease in as you can and then gently warm it so the
grease flows out through the holes from the centre to the outside
diameter of the spindle. When you think you've got enough through you
then need to do it all again, let it cool down and batter the fucker
with a big hammer and a drift until it moves. Anything else involving
heat will end with a full strip down and possibly damaging the frame
and swinging arm. Make sure you use a copper drift or you might swage
the end of the shaft out so badly it'll never move.

Your other option is to source a cheap second hand swinging arm and
use an angle grinder to cut it off.

Why are you trying to remove it?

 

Seriously, avoid the fucking around and just cut it out. It's scrap
anyway.

 

As far as I'm concerned the swingarm is scrap anyway, its rusted through on
the bracing box, there's a replacement sitting on the bench all nicely
brushed up with Hammerite and new bushes.

Before I get too eager and destroy the old swingarm it will be easier to
handle for a stripdown with both wheels in it.

 

The swing arm certainly is and I'm sure I could get another bolt, but I'd
prefer not to have to scrap the frame because there's a bolt seized in the
middle section with nothing left to get hold of.

 

You don't have to, YTC.

You cut through the pivot bolt on either side of the swinging arm. You
need one of those one-handed hacksaws with a stiff blade that sticks
out, and a lot of patience. Then it just falls out. You've got another
swinging arm anyway.

Or, even better, just angle grind through the swinging arm and the pivot
together.

 

Padsaw. They do a nice - and very handy - air-powered variety these
days.

That's better.

 

Don't faff about, just cut it out.

If it's the same length / width as a CB250N s/arm spindle, I have a
couple of spares,

Cheers,

Paul.

 

Only a couple???

 

"Several"

Paul.