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on another posters thread I thought I would create my own thread.
| Pilgrimmick Member Since: 16 Nov 2015 Location: Highlands Posts: 582  
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You can strip them and clean the old grease off, but unless you have been using it in deep water etc there is no need usually. If you do make sure you mark them and reassemble them in line or you are heading for a vibration nightmare!
I would just change the UJ, and grease them. As the saying goes, 'Grease is a cheap mechanic". 80" 1948 Lightweight V8 Bowler Tomcat 130 Station wagon 90 300tdi (Santana PS10 pick up) Range Rover L322 (Ful fat) |
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14th May 2018 9:26pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468
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Oh yes, I've read a lot about people not keeping the flanges to prop aligned and the slider splines etc and havin lots of vibration problems etc due to knocking balance out.
I don't go wading or anything, so on this occasion I might leave the sliders alone. No Guts, No Glory. ๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช |
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14th May 2018 9:39pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17458 
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The problem is not so much one of balance but rather that the Hooke's joint is not a constant velocity joint. This means that given a constant angular velocity on the input shaft, the output will be accelerating and decelerating twice per revolution. A propshaft with two Hooke's joints has them phased so that the fluctuations induced by the first UJ are then counteracted and smoothed out by those of the second.
The problem becomes more complex if the joints are articulated to unequal angles and/or if the flanges are not parallel, in which cases the UJ spiders are offset by a certain amount to compensate for this. If the splined sliding joint is misaligned then the inherent self compensation of the two joints is lost and vibration is inevitable. |
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14th May 2018 11:09pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1629  
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I find most of the time itโs the cheap UJ being fitted to โsave moneyโ or some numbnut has fitted it with a hammer in a dirty mangled end and bent the Yolk. If yours is missing the grease nipples Iโd be suspicious someoneโs had their mitts at it before.
Iโll not even get into them being fitted upside down or even the wrong prop altogether 
Itโs got to the stage now when you take the labour and the cost of quality UJs you can replace the whole prop and give them a 2 year guarantee for less in this throw away world. |
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14th May 2018 11:23pm |
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| windy81 Member Since: 14 Mar 2018 Location: North Wales Posts: 311  
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That gets full marks from me! That explains everything. Cheers  |
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15th May 2018 7:36am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468
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Blackwolf's knowledge on these matters has been invaluable.
I've seen a few videos online of them being smashed about with a hammer, namely b*itpart videos.
One question I do have, is the Genuine grease nipples I have en route namely as spares are I think 45 degrees. And these are the type used on the UJ's. However, the slider grease nipples are 90 degrees. There shouldn't be any issues with changing over to the new ones should there? Or, as they are present and correct and the slider nipples on both props are in perfect condition and not loose I may just leave them. Makes me wonder with the loose grease nipples on the UJ's if they were loosened to grease in situ for access. And then not re-tightened up to 8nm, or nipped up and left so loose you could spin them with you finger. I'm just waiting to buy the UJ's and I need a bigger vice as well as I only have a Record 4". Interesting also to see the other day the tip about the orientation of the circlips on a YouTube video I saw, with the machined side out. No Guts, No Glory. ๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช Last edited by custom90 on 15th May 2018 9:31pm. Edited 1 time in total |
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15th May 2018 11:00am |
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| L110CDL Member Since: 31 Oct 2015 Location: Devon Posts: 10801 
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Good you have got to the bottom of your problem Steve
This is a very interesting thread and trying to take it all in, i will get there in the end  1996 Golf Blue 300Tdi 110 Pick up.
Keeper. Clayton. |
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15th May 2018 8:19pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468
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Just been waiting on a pack of 3/8" washers that arrived today to get the handbrake drum aetc all back on.
Been out just a short test run with diff locked and FWD and all the issues I had are completely gone! So that UJ was the complete culprit all along. At least I'm mobile again now, so long as just very local and take it very easy. Hoping to have the rear prop .UJ's fitted by this time next week and repeat on the front after that. Giving them a good clean up too.  No Guts, No Glory.
๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช |
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16th May 2018 1:51pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468
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UJ's arrived, ready to crack on and the pathetic circlip pliers. (Were cheap ones) broke.
Funny how each set of tips I used broke too, so isn't my fault. 
Better quality set arriving shortly, will come in use for other things anyway. Always something! No Guts, No Glory.
๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช |
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21st May 2018 4:17pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1629
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Get the clip moving in the groove first before trying to remove it
gentle use of the persuader and a screwdriver  |
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21st May 2018 4:30pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468
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Indeed, these things were only about ยฃ4 one of those multihead Rolson things so was to be expected. Iโve got them well soaked in WD40 also No Guts, No Glory.
๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช |
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21st May 2018 4:36pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1629
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Sometimes hard to get one out when someone pushes one side in hard against the circlip and doesnโt even it out after
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21st May 2018 4:39pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468
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Ah yes, good point.
Might pay to try and push the UJ cup inwards a little to free the circlip up a bit. I've cleaned it all up perfectly, it's just tight. Never the less, the circlip pliers are useless anyway.  No Guts, No Glory.
๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช |
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21st May 2018 5:10pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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tapping around circumference the yoke with a 'small' hammer will often shock them free. Obviously not so much you damaged the yoke, we're not talking about belting the life out of it with a lump hammer.
Warming it up with a blow torch also helps loosen the clips - doesn't matter about damaging the seals on the old UJ. I've found that while with most tools, cheap ones last ok for DIY use, none of the cheap small circlip pliers seem much cop. either the tips snap or they don't have the right profile on the tips so the clip slips off as soon as you try to use them. |
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21st May 2018 5:15pm |
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