Page 2 of 2

Vertical link/stub axle nut and washer

Posted: Tue Jun 04, 2019 4:22 pm
by Old and Slow
Here's a picture with the nut and washer visible;
TR4A_suspension_3.docx
(181.5 KiB) Downloaded 50 times
Can't see whether the washer is distorted, though!

Vertical link/stub axle nut and washer

Posted: Thu Jun 06, 2019 10:51 pm
by Dennis Nicholas
I have found a larger dia. and thicker washer but had to drill out hole to size and am having to file a bit thinner so that the nylock bit of nut engages with the threads :D :cry: :D what a grind! picture to follow

Vertical link/stub axle nut and washer

Posted: Fri Jun 07, 2019 7:09 pm
by Old and Slow
Hope it works! Sounds to me like to ought to be some kind of "top hat" shaped washer, but the assembly diagram shows a flat washer. I wonder if case-hardening the steel washer would reduce distortion? Also, I'd be interested to learn whether torquing the nut up to the specified figure causes distortion, or whether the nut been over-tightened at some time in the past?
Please tell us how it goes - thanks.

Vertical link/stub axle nut and washer

Posted: Fri Jun 14, 2019 10:06 pm
by Dennis Nicholas
New washer ready.
Filed down to 0.179 inch thick. It is a larger diameter. 0ld washer was I/D 0.506", O/D 1.115", thick 0.091" . Nut is 1/2" UNF (0.7475 Across flats and 0.8545" across the points.....the stub hole is 0.8215"
The outer chamfer nearly filed away.
DSCF1085.JPG
DSCF1085.JPG (230.07 KiB) Viewed 436 times
Still nice and beefy
DSCF1086.JPG
DSCF1086.JPG (233.32 KiB) Viewed 436 times
centre hole just slightly larger than stub thread and O/D bigger.
DSCF1084.JPG
DSCF1084.JPG (271.46 KiB) Viewed 436 times
Nylon insert in nut should just fully engage with thread and more so once torqued up.....will make sure I check for tightness several times after running.
Washer has been given full treatment....shot blasted and hydrate 80....all items will receive final coat of POR15 (as I can't get my preferred better KBS Coatings Rust Seal any more).
I found the washer in one of my tins of old nuts/bolts/washers. Just got to find its mate for the O/S overhaul.
Note to self....look at investing in a small surface grinder.....this is the latest of many washers/shims ground down/filed by hand....horrible job and so time consuming.

Dennis

Vertical link/stub axle nut and washer

Posted: Sun Jun 16, 2019 10:04 pm
by Old and Slow
Well, that shouldn't bend!!
I hope it works OK after all that filing.

Vertical link/stub axle nut and washer

Posted: Wed Jul 24, 2019 4:08 pm
by Dennis Nicholas
A chance remark, somewhere, gave a possible explanation to this small mystery/problem.
The remark was "well the nylon part of the locknut did not reach the thread so I just put in a thiner washer"!!!!!!!!!!!!!
Penny has dropped......there are T nuts and P nuts. I got a new nut from Rimmer Bros. and it was indeed a Nylock T nut.
The Nylock T nut is 12.3mm (0.48) whereas the P full nut is 14.8mm. (0.56").
I just happened to have P type in my box of 1/2" 20 tpi UNF Nylocks.
So it looks like a previous owner had used wrong nut and a too thin washer.

So you need to use the thinner T type nuts and you can get a good thick washer on. My washer ended up 0.179" (4.5mm) and thread of stub just reaches slightly beyond the nylon.

Anyone know an original washer thickness; or can measure one??