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swing arm removal
Posted: Tue Aug 16, 2022 2:16 pm
by bodge
i have a 175 frame im trying to strip which doesnt have the 2 clamp bolts my 250 has.
there appears to be a roll pin driven into a hole that has been drilled completly through the swinging arm and shaft, there was also what appeared to be a large self tapper screwed into the pin from above.
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is this standard ? ive given it a little bit of a massage with a hammer and no joy am i missing something or do i just have to beat the snot out of it?
Re: swing arm removal
Posted: Tue Aug 16, 2022 4:12 pm
by themoudie
Aye bodge,
Slather it with 'BulldogBDX', for at least 48 hours and then try a little warming, before " beating the snot out of it!"

Diesel fuel or citric acid are good alternatives, as well.
I would be wary about the " beating the snot out of it!" in case you start to rivet over the edges of whatever you are beating!
Try a brass drift, brass plumbing fitting, or copper tube for receiving the blows from a dead blow mallet, rather than directly beating the object, with a wee ½lb hammer. A single blow from a well aimed 2lb ball pein or even 4lb mash hammer, I find works better.
Good health, Bill
Re: swing arm removal
Posted: Tue Aug 16, 2022 9:39 pm
by Jon Pegler
I had an early A series 200 Elite frame that needed a lot of heat from an oxy-acetylene torch, together with a steel drift and a 14 lb sledgehammer to get it to move.
The usual aluminium drift and 4lb club hammer had no effect whatever.
Happy bashing.
Re: swing arm removal
Posted: Tue Aug 16, 2022 11:42 pm
by themoudie
Aye Jon,
Blacksmith's work!
Good health, Bill
Re: swing arm removal
Posted: Wed Aug 17, 2022 11:05 am
by IanHood
If you can get access you might be able to drill it out with a carbide drill bit (but be careful, carbide bits break more easily than the normal ones).
Ian
Re: swing arm removal
Posted: Wed Aug 17, 2022 12:03 pm
by Eldert
a 175 has the bronze bushing in the frame not in the swingarm .
the selftapper look like a grease fitting to me
i would knock out the roll pin or pins and then put the frame under a press and see if it will move out
Eldert
Re: swing arm removal
Posted: Wed Aug 17, 2022 1:31 pm
by blethermaskite
I have been there a few times..... I'm with Eldert on this, use a press if you have one or take it to somebody who has.......I don't have any big hammers anymore (they were too tempting)
Cheers,
George
Re: swing arm removal
Posted: Wed Aug 17, 2022 7:51 pm
by ranton_rambler
On my 175, I pulled the swing arm pin out with a puller made from a piece of threaded bar and various spacers etc. Much more controllable than a big hammer.
Re: swing arm removal
Posted: Thu Aug 18, 2022 10:11 pm
by bodge
thanks for all the advice guys. i lucked out in the end and got it out with just a hammer and drift without too much effort,it still had grease in that hadnt dried out.