butasteve
Senior Niva Petrol Head
Posts: 366
Location: Western Cape
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Registered: Jan 22, 2011 12:02:42 GMT 2
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Post by butasteve on Sept 13, 2012 10:03:05 GMT 2
mariusIt should be. We do have a Gabriel SA (Pty) Plant in Tokai. Think they are now part of Control Systems or the other way round. Maybe the dealers compare prices and make adjustments... Labour is generally cheapers in the Cape, because many Cape Townian Artisans in the Building & Related Industries (Friends of us) works/used to work in the Transvaal because of the higher rates. Regards Stephen
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Post by marius on Sept 13, 2012 11:06:28 GMT 2
It makes no economic sense whatsoever ;D
Marius
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Post by marius on Nov 19, 2012 13:24:37 GMT 2
Hi all
I think I may have found the reason for my recent vibration on the Niva. The rubber end cap on the output shaft has quite a lot of play on the shaft. Probably put it back together tomorrow some time and see if it makes the difference.
However I have discovered an issue with the new rear prop shaft...the CV gets very hot on the TC side and it chucks out some grease through the cap. The grease also smells burnt - like old grease from a ujoint, but the CV itself seems to be fine - for now.
That particular CV came with brass type studs whilst the rear CV came with longer steel type studs. I know that the TC gets quite hot but could the brass studs conduct even more heat?
I am also thinking of making a (2-3mm) cork gasket that can act as some sort of a heat shield - but maybe that can make matters even worse?
Regards Marius
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spikes
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Post by spikes on Nov 19, 2012 14:00:22 GMT 2
Can't you use a higher temp rating grease for the CV?
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Post by marius on Nov 19, 2012 14:25:34 GMT 2
Hi Spikes
Unfortunately I don't have the spec for the grease but it is the blue type grease which is normally a quality high temp grease but - yes maybe that could be part of the problem. If this issue creeps up again then perhaps I should try and get a grease that can handle higher temps.
I am still perplexed about the brass type studs - perhaps causing even more heat - but it may also dissipate heat more quickly?
The other option I am contemplating is to swop the studs around and still ad the gasket to make up for the longer studs and see how that goes. The rear diff area is not nearly as hot as the TC area.
Thanks for the feedback Marius
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spikes
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Post by spikes on Nov 19, 2012 15:30:08 GMT 2
Keith took heat readings of the various components on the NIVA. I know the steering box was one of the items, but cannot find the thread now to verify if the TC was also measured. Perhaps that could help you in specing the CV grease.
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Post by ronnie on Nov 19, 2012 16:04:29 GMT 2
Hi Marius
I would think the brass studs will conduct more heat than the steel ones. I would not try a gasket of any type here as it needs to be bolted up tight. I would try to find some way to check the TC temperature and find out what is the normal temperature for it. Unfortunately I can`t help you with temperatures now.
Ronnie
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Post by Charles on Nov 19, 2012 16:07:32 GMT 2
The reason for the brass studs is they can dissipate the heat faster and also with the constant heating and cooling they do not rust like steel studs.
Charles
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Post by marius on Nov 19, 2012 18:23:41 GMT 2
Thanks guys
Hopefully I can resolve the issue.
Marius
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Ihar
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Lada Niva Driver
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Post by Ihar on Nov 20, 2012 7:27:24 GMT 2
Spikes, I dont remember that Keith took the TC temp, and it is in the thread where he drowned Ceratoth as far as I recall
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Post by marius on Nov 20, 2012 16:18:15 GMT 2
Hi all
I took the car for a 15km trip and the rubber end cap resolved the latest vibration issue. I will probably test the CV on the prop shaft on a longer distance later this week, but it seems fine for the moment. I don't think that my digital cooking thermostat gave me an accurate reading on the TC at under 60 degrees but by touch the heat from both the CV's feels more or less the same but you won't want to keep your finger there for any length of time!
Ronnie I did make a cork gasket but I promise you I will keep a close eye on matters down there as I know that additions like that can make things worse. Things are nice and tight though. I also kept the brass type plugs on the front CV for the time being.
Marius
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spikes
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Post by spikes on Nov 20, 2012 18:48:28 GMT 2
I found the threads where Keith took various measurements: "Running Hot" 1st two pages, but no TC temp. Gearbox at 60.4C though. The TC should be hotter with the internal diff and relatively little oil, but still not hot enough to melt CV grease. My opinion only. I did see that Jan((belgium) was also concerned about the TC running very hot
Spikes
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Post by marius on Nov 20, 2012 19:33:23 GMT 2
Thanks for all your trouble Spikes The front CV does work a bit harder with its greater angle but the current blue grease I have should comfortably be able to handle that kind of temperature - even if it is double the amount of heat. Perhaps I overdid the grease a bit? Only time will tell I guess? Marius
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spikes
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Post by spikes on Nov 21, 2012 8:41:23 GMT 2
Hi Marius
Keith advised that he will take a TC temp measurement later today
Spikes
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spikes
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Post by spikes on Nov 23, 2012 19:37:25 GMT 2
Keith took the temperature reading today;
Temperature on the transfer case was at 41'C which seems reasonable to me
Full details in the Tech Section in "technical Assistance by owners"
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Post by marius on Nov 23, 2012 19:42:07 GMT 2
Thanks Spikes (and Keith!)
I took the temp of my TC when it was about 35+ out there - VERY HOT DAY! and the temp on the TC output shaft was 56 degrees.
Marius
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Post by Charles on Nov 23, 2012 20:01:57 GMT 2
That isnt too hot?
Charles
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