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Re: King pins
Posted: Tue Mar 15, 2016 10:00 pm
by AlanBartlett
The order that they came off, and the order I put the new ones in
Re: King pins
Posted: Wed Mar 16, 2016 12:54 am
by Tony Fearn
Hi Alan,
I think that you've got it correct. The whole weight of the car bears upon the lower part of the stub axle jaw.
The thrust washer should cover the bottom bush. Did the washer and the dust cover have a small hole in it to allow pinning to the axle itself?
Have you had to ream-out the bushes in-situ? That's a bit difficult as the centre-line of the king pin is oblique with reference to the back plate and the bottom bush is very near to the plate.
I seem to remember I used a 13/16ths reamer, but don't quote me on this.
Make sure there's no binding when going from full lock to full opposite lock. If there's some stiffness, then hitting a bump at 'speed' might take you off the straight and narrow.
Well done .
Tony.
Re: King pins
Posted: Wed Mar 16, 2016 8:39 am
by AlanBartlett
Hi Tony,
Interesting you say about the thrust washer and cover having a hole in, the dust cover did have the hole in, but the thrust washer didn't. Instead the thrust washer had a flat side, and a seratted side, which I assumed that the flat side went against the bottom bush surface?
I did ream out the bushes, I had acquired at 13/16 reamer to do the job with, I removed the back plate and everything to do the job, as I was replacing the brake shoes as well, to clean everything up at the same time as doing the kingpins.
Re: King pins
Posted: Wed Mar 16, 2016 10:07 am
by richard turner
I have no recollection of covers in use on the pre-war axle. They are used for the Bradford. The pre-war axle beam has a predisposition to wearing the king pin hole oval and so replacement of the king pin and bushes does not cure the play top to bottom at the wheels. Shims would be needed to reduce up and down play to acceptable levels and it looks as though the dust cover is being utilised incorrectly for this purpose. Examine the axle beam carefully prior to re-assembly as remedial work may well be required to produce a safe and satisfactory repair.
Good luck!
Rich
Re: King pins
Posted: Thu Mar 17, 2016 1:25 am
by Tony Fearn
Richard wrote:I have no recollection of covers in use on the pre-war axle.
Having looked again at the Illustrated Spares catalogue for the pre-wars, I have to agree with Richard. There's no mention of them in the listings, but they are there in the CA Bradford catalogue.
Surely if they were ok for the Bradford, they'll be ok for the pre-war as an after-market upgrade.
The pre-war axle beam has a predisposition to wearing the king pin hole oval.
That's why I suggested tightening-up the cotter pin, unless of course the oval wear in the king pin hole on the end of the axle beam is too great.
I don't remember ever having seen a thrust washer with a serrated side.
Tony.