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transmission oils

 
 
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paulg
Gate Opener


Joined: 02 Apr 2013
Odometer: 16
Location: Spain



PostPosted: Fri Aug 23, 2013 7:53 pm    Post subject: transmission oils Reply with quote

Hello Chaps
Any views about using thicker oils in the axle / transfer box to lessen noise?
I'm in temps of 30C for most of the year.

Regards
Paulg
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gadgetboy
Off-Road Guru


Joined: 03 Sep 2005
Odometer: 1947
Location: Belfast, N. Ireland



PostPosted: Sat Aug 24, 2013 5:16 am    Post subject: Reply with quote

Stick with the recommended oils. See the back pages of the repair manuals. Download from http://www.ladaniva.co.uk
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Danie
Winch Assistant


Joined: 23 Jan 2010
Odometer: 66
Location: Durban, South Africa



PostPosted: Sat Aug 24, 2013 5:15 pm    Post subject: Reply with quote

Noise coming from a diff is a sure indication that something (most probably the bearings) is worn.

Rather strip the diff, and replace whatever is worn - and then use the correct oil as indicated above.
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Danie
Winch Assistant


Joined: 23 Jan 2010
Odometer: 66
Location: Durban, South Africa



PostPosted: Sun Aug 25, 2013 6:33 am    Post subject: Reply with quote

Just another thought - if any noise is coming from the rear axle, you should actually have a close look at the condition of the wheelbearings first.
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paulg
Gate Opener


Joined: 02 Apr 2013
Odometer: 16
Location: Spain



PostPosted: Sun Aug 25, 2013 11:59 am    Post subject: Transmission oils Reply with quote

Thanks guys!
paulg
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Red ant
Winch Assistant


Joined: 18 Jan 2010
Odometer: 62




PostPosted: Thu Aug 29, 2013 11:57 am    Post subject: Reply with quote

On the Castrol Australia website they list different oils to the ones in the book. GL5 80w 90 is what they recomend for aussie conditions. I could never make sense of any of the fluids in the book as they are all Russian.
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Danie
Winch Assistant


Joined: 23 Jan 2010
Odometer: 66
Location: Durban, South Africa



PostPosted: Fri Aug 30, 2013 4:54 am    Post subject: Reply with quote

I must admit, I also started using the thicker 85 / 140 oil in both diffs as recommended, but to my mind there is no need to use such thick oil if all diff components are still in good condition.

To my knowledge 85 W 90 oils gets used in most other vehicle's diffs locally - and I can't think about any reason why the requirement for Niva diffs should be any different.

I have recently inspected both my Niva's diffs properly, replaced whatever parts needed to be replaced and all components are in perfect condition - when I change oil again, I will rather start using 85W90 again.

To my mind most Niva diff problems are caused by oil leaks - oil levels often gets too low, and the components do not get lubricated properly. Rather make sure that those oil seals are not leaking, and that oil levels do not get too low...
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paulg
Gate Opener


Joined: 02 Apr 2013
Odometer: 16
Location: Spain



PostPosted: Mon Sep 09, 2013 6:37 pm    Post subject: transmission oils Reply with quote

Thnks Danie
when you rebuilt your diff did you have access to special tools for setting it up?
Paulg
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baxter
Articulating


Joined: 08 May 2006
Odometer: 647
Location: Dunedin, New Zealand


1990 Lada Niva

PostPosted: Wed Oct 09, 2013 12:50 am    Post subject: Reply with quote

Iirc Andy at Lada & Korean Parts Australia (who has never put me wrong on Niva advice) recommend an 85W/140 for hotter climates, and years ago when I was google translating Russian forums I think they liked 75W/140 for hotter places.
EDIT: note this advice is for diffs, not the transfer-case. My collected knowledge of Nivas and oils: http://ladaniva.co.uk/baxter/resources/Oil.htm

__________________________________
1990 Niva 1600, 2" lift, LSD
www.ladaniva.co.uk/baxter -Baxter's Temple of Niva Site
If you do not have anything to occupy yourself - buy a Niva.


Last edited by baxter on Sat Oct 12, 2013 2:37 am; edited 1 time in total
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Danie
Winch Assistant


Joined: 23 Jan 2010
Odometer: 66
Location: Durban, South Africa



PostPosted: Wed Oct 09, 2013 8:21 am    Post subject: Re: transmission oils Reply with quote

paulg wrote:
Thnks Danie
when you rebuilt your diff did you have access to special tools for setting it up?
Paulg




"Iirc Andy at Lada & Korean Parts Australia (who has never put me wrong on Niva advice) recommend an 85W/140 for hotter climates, and years ago when I was google translating Russian forums I think they liked 75W/140 for hotter places."
__________________________________


@ Paul
I don't have a dial guage to do the correct setting between the Crownwheel and Pinnion teeth - and I do not have any experiece with dial guages either. So last time when I did a diff rebuilt, I have used some thin paint at the Crownwheel teeth to do get the correct touching pattern between the Crownwheel and Pinnion teeth. At one stage I was very keen to buy and try a dial guage myself, but eventually took the diff to a professional company to do the correct settings.

During a diff rebuilt, it is very important to change all FOUR "spider gears", as well as the small pinnion shaft, and two copper spacers,( the complete set) when only one of these components seems to be worn. (When one component is worn, the others will be worn anyway).Specially the Pinnion Shaft (2101 2403060) is very important. By replacing all four Spider Gears and copper spacers with new ones, but re-installing an old (worn) Pinnion Shaft, is looking for trouble. The worn Pinnion axle will cause the two smaller Spider Gears to "wobble" - and this will easily cause teeth breakage.




@ Baxter

The main reason why I was considering a thinner oil, is beacuse of the resistance which can clearly be felt by hand when the ticker oil gets used, and the Propshaft Flange gets rotated by hand.I think this additional resistace might contrbute to poor fuel consumption, but I haven't done any tests to proof that.

And I must admit - I've got two very good Crownwheels with Pinnions, as well as new Bearings, and two complete sets of Spider gears lying around. So I've actually decided to push my luck with the thinner oil first, do fuel consumption tests, replace the thinner oil after 10 000km with thicker oil, and then do fuel consumption tests again. If there is no difference in fuel consumption, I will then stick to the thicker oils .
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