Search found 786 matches

by ndevans
Fri Jan 17, 2020 10:32 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Unable to edit the above post, so adding here that the oil seal is also fitted. I checked the pre-load again tonight, it is almost exactly 12in-lb.
Cheers N
by ndevans
Thu Jan 16, 2020 9:46 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

I have now got the pinion reassembled, with a 0.003" shim between the crush washer and the outer bearing. That has now enabled me to get the pinion pre-load up to around 13in-lb, but that is with dry bearings, and without the cage and crown wheel fitted. The pinion nut torque was slightly under 130l...
by ndevans
Mon Jan 13, 2020 7:48 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

As far as I can tell, the markings on the back of the crown wheel are 1055, and 008, both without a + or - sign in front of them. Photo below:- IMG_20200113_192808~3.jpg Does this mean 0.008" of backlash? If so, that's 0.208mm, and my measured value of between 0.2 & 0.3 mm isn't far out at all. Chee...
by ndevans
Mon Jan 13, 2020 10:44 am
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Thanks gents! That is good to know. The only thing left then is to add a shim or two, in order to get the pinion pre-load correct. I don't know whether the spacer innate is solid, or a crush spacer, but I have a new crush spacer ready. I believe I need to remove the pinion to do this-as I'm not repl...
by ndevans
Sun Jan 12, 2020 10:53 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Had a first trial with the gear marking compound today. If I'm interpreting the contact pattern correctly, the pinion height is about right, but the backlash needs decreasing. Pics below, drive side first:- IMG_20200112_203821~2.jpg IMG_20200112_203908~2.jpg IMG_20200112_204007~2.jpg And the coast s...
by ndevans
Sat Jan 11, 2020 10:11 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Ok, I have this evening rigged the diff up in the vice, gripped as firmly as possible, and measured the backlash using a dial indicator. I haven't used one of these since college, and it's not a top of the range model. I've measured in two places, approx. 90° apart, on the less inclined side of the ...
by ndevans
Wed Jan 08, 2020 7:40 am
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Thanks Phil. I have got the crown wheel and cage, minutes the sun and planet wheels, back into the carrier now, and the bearing caps loosely bolted down. My plan is to see what the contact pattern looks like as it is, then dissemble, add a shim &/or replace the crush washer on the pinion, then reass...
by ndevans
Tue Jan 07, 2020 5:59 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Any chance you could scan and send them to me please Phil?
I did try English Diff company, but got no joy from them.

Cheers N
by ndevans
Tue Jan 07, 2020 5:59 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Any chance you could scan and send them to me please Phil?
I did try English Diff company, but got no joy from them.

Cheers N
by ndevans
Tue Jan 07, 2020 9:53 am
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Thanks once again gents, you've come up with the goods! So, to clarify for a bear of little brain, are the contact patterns that I should see on the Minor the same as those in the articles? Roughly central along the length and the depth of the crown wheel teeth? And Happy New Year, by the way! Cheer...
by ndevans
Mon Jan 06, 2020 11:38 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Thanks Declan. I had hoped that the pack would come with some example contact patterns, and guidance on how to interpret them, but it doesn't. I've looked on the web, and the are many "how-to's" on YouTube etc. I've found this guide here, which looks useful:- https://www.autozone.com.mx/repairinfo/c...
by ndevans
Mon Jan 06, 2020 11:12 am
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Happy New Year all! I ordered some marking fluid from Avion before Xmas. It finally arrived at the weekend, but they've sent the blue stuff instead of yellow. Also, despite saying full instructions enclosed, there's just a bottle of fluid. Since they're in Ukraine, and it took 3 weeks to get the fir...
by ndevans
Thu Dec 05, 2019 11:01 am
Forum: General Discussion
Topic: Trolley jack overhaul
Replies: 20
Views: 686

Re: Trolley jack overhaul

Mark Wilson wrote:
Thu Dec 05, 2019 10:48 am
Does a Tory jack reduce the labour?
No, it just lifts you to unsustainable heights, but can't be trusted to keep you there.....
by ndevans
Thu Dec 05, 2019 9:45 am
Forum: General Discussion
Topic: Trolley jack overhaul
Replies: 20
Views: 686

Re: Tory jack overhaul

Sleeper wrote:
Thu Dec 05, 2019 7:54 am
I just love that predictive texting....

John :wink:
Damn you, predicate tart!
by ndevans
Thu Dec 05, 2019 7:43 am
Forum: Off-Topic
Topic: Currently drinking.....
Replies: 98
Views: 5060

Re: Currently drinking.....

Not currently drinking, but I will be soon!
IMG_20191203_001444~2.jpg
IMG_20191203_001444~2.jpg (1.09 MiB) Viewed 419 times
by ndevans
Thu Dec 05, 2019 7:36 am
Forum: General Discussion
Topic: Trolley jack overhaul
Replies: 20
Views: 686

Trolley jack overhaul

My trolley jack is no longer working properly. I've topped up the oil, but it's no better. There's no sign of leaks, so I guess a seal has gone somewhere. Has anyone tried overhauling a trolley jack? Any tips would be appreciated!
Cheers N
by ndevans
Thu Nov 14, 2019 9:53 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Nothing to report on my part, I'm afraid. I've not had time, last couple of weekends, and this weekend, are taken up with running events (as in racing).
Probably late Nov-early Dec I'll start to make more progress.

Cheers N
by ndevans
Mon Nov 04, 2019 6:43 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Thanks Phil. Before I go too much further, two questions. 1-am I right in thinking that using the marking compound to check and adjust the meshing pattern removes the need to use the dial indicator and slip gauge to measure the pinion height wrt the cage bearing seats, as described in the BMC manual...
by ndevans
Mon Nov 04, 2019 3:57 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

The yellow marking compound used in the link above to determine the tooth meshing is available from English Diff sales@englishdiff.com It is supplied with an application brush as part of the purchase. It also comes with instructions for use and examples of right and wrong tooth pattern. Also this t...
by ndevans
Sun Nov 03, 2019 5:03 pm
Forum: Mechanical
Topic: Differential overhaul
Replies: 196
Views: 6237

Re: Differential overhaul

Right, thanks, I now have a better understanding!

I will get the pinion out of the 4.22 this week, and find out what sort of spacer I have.

Cheers N