
Cotter pin removal
#1
_steve253_
Posted 21 December 2009 - 03:49 PM
#2
Posted 21 December 2009 - 06:02 PM
#3
Posted 21 December 2009 - 06:34 PM

#5
Posted 24 December 2009 - 04:41 PM
#6
_gen3torrie_
Posted 24 December 2009 - 09:24 PM
#7
Posted 24 December 2009 - 11:25 PM
91107960 is the part number from Holden.
Ask if they come with nuts. If not, 14NFNNYTPN is the part number for the nylock nuts from any Auto 1.
Have fun.
#8
_steve253_
Posted 25 December 2009 - 08:20 PM
#9
Posted 27 March 2011 - 09:05 PM
Followed directions in this and other threads about ideas with clamps and sockets/nuts but the thing won't budge!
Too scared to take a hammer to the thing following posts and the GMH manual about damage to the collapsible column and bearings but I think it is coming to that.
antelopeslr5000 I've sent you a PM about the bikesmithdesign press you showed in your post and it may come to that unless I can find something similar in Australia.
Anyone else had a particularly difficult experience that can lend some advice of their win against the cotter pin?
Cheers, TB
#10
_Kush_
Posted 28 March 2011 - 05:13 AM
I don't know if I damaged anything in the steering column yet though.
#11
Posted 28 March 2011 - 07:08 AM
Hope this makes sense, if not I can take a pic.
#12
Posted 28 March 2011 - 10:04 AM
s
#13
Posted 28 March 2011 - 10:20 AM
If the nut is still a nyloc, that method will destroy the nut.I've heard to unscrew the nut till it's flush with the top of the pin, then when you hit it with a hammer you're hitting a much larger surface area.
s
#14
Posted 28 March 2011 - 10:35 AM
I have very little access around my pipes so there is no way a clamp like that bikesmith one above would fit - only something along the lines of the original Holden one would have worked on mine. I made my own - I'll post some pics when i get home tonight. It is very simple and along the lines of the original holden one, only difference is I welded it up from Mild steel.
I didn't know if it would bend being made of steel but it didn't, it worked superbly.
I have found it very difficult in the past to remove tight pins without damaging the pin but using the clamp does the job nicely. those pins are pretty exxy to replace for what they are too - especially if you need 4 of them.
I am sure I took a scan of the scketch I drew up with dimensions too so I'll see if I can dig that up too.
Matt
#15
Posted 28 March 2011 - 10:59 AM
#16
Posted 28 March 2011 - 10:58 PM

I tried cold bending it at first - got to about 60 degrees and then snapped my crud cast chinese vice in half

Went and bought 2 dawn SG vices to replace them.
Decided to cut and weld and see how it went.
I have the rough sketch of it I did here - for some reason it is a .pdf not jpg so cardomain won't let me upload it.
I used a 3/8 UNF high tensile bolt in it. Makes it easier to turn with the fine thread.
If you have an e-mail address, I can send the .pdf - I can't remember which program I used to use to convert pdf's to jpg's.
#17
Posted 29 March 2011 - 09:52 AM
It sounds like some persistence and perhaps a degree ingenuity pays off (I am fast running our of the former and never had much of the later).
A fellow member has kindly waded in and has posted me his cotter pin press to loan - just amazed (in a good way) at the trust and assistance provided to me - especially since I am a total stranger to him.
Toranamat69: The press being loaned to me looks very much like your home made version.
I am really concious of not damaging the press when it arrives by asking too much of it, and so if you could send me your drawing I'd appreciate it as a back-up plan - Email: [email protected]
Again, thanks to everyone and cheers, TB
#18
Posted 30 March 2011 - 06:32 PM
Thank you to the forum member who loaned it - much appreciated. It will be in the mail and on it's way back to you by the end of the week.
I had the previously immovable pins out in seconds and they required but nine-tenths of bugger-all effort to push the pins through.
The press fits perfectly around any and all of the cotter pins on the steering shaft - I recommend it to anyone having troubles like mine.
Go here for any and all detail: Bike Smith Design - Cotter Pin Press
Having said that, I am absolutely sure a home made press of the type shown by toranamat69 would work just as well - the design and principal is the same for both.
Again thanks to all and cheers, Craig
#19
Posted 30 March 2011 - 09:17 PM
#20
Posted 31 March 2011 - 05:52 PM
He seemed like a really genuine and knock-about guy in my correspondence with him - he even offered to contact someone in my town to whom he'd sold a press to see if I could loan it. In any case I'd be pretty confident he'd do what he could to accommodate any enquiry about his cotter pins and their suitability (or not) for our steering linkages.
Cheers, TB.
Edited by Tyre biter, 31 March 2011 - 05:54 PM.
#21
_markymark20_
Posted 23 June 2011 - 05:37 PM
Cheers Markymark.
#22
Posted 23 June 2011 - 05:54 PM
I would check there first. It might lower the column enought to get the cotter pin in.
#23
Posted 23 June 2011 - 11:26 PM
You could try measuring the from the bearing to the tip of the shaft and getting someone to compare with their column. If the shaft has been pushed back into the column then you will be able to wiggle it back out to the correct length.
Edited by ls2lxhatch, 23 June 2011 - 11:28 PM.
#24
_DrFegg_
Posted 24 June 2011 - 08:42 PM
If as others have said, the plastic lugs have broken, replace the whole steering shaft, it is dangerous and shouldnt be used.
#25
Posted 24 June 2011 - 10:04 PM
If as others have said, the plastic lugs have broken, replace the whole steering shaft, it is dangerous and shouldnt be used.
The plastics lugs are not important. They are only there to hold the shaft at the correct length during assembly.
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