Reduction oil

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Amended 27/10/18

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John
Posts: 88
Joined: Sun Jan 15, 2006 5:48 pm
Location: Oldham,Manchester

Reduction oil

Post by John » Wed Jun 13, 2018 5:45 am

How much oil would I need for the reductions on my 990

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ollek
Posts: 3596
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Re: Reduction oil

Post by ollek » Wed Jun 13, 2018 6:42 am

Instructions and details concerning service and use of the tractor is clearly stated in the Operators Manual.

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db2d
Posts: 1943
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Re: Reduction oil

Post by db2d » Wed Jun 13, 2018 7:06 am

2.3litres each side. SAE 140. Obtainable from davidbrownparts.com

John
Posts: 88
Joined: Sun Jan 15, 2006 5:48 pm
Location: Oldham,Manchester

Re: Reduction oil

Post by John » Wed Jun 13, 2018 9:29 am

Been told EP 140
What is the difference between EP 140 and SAE 140
WHICH IS RIGHT

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db2d
Posts: 1943
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Re: Reduction oil

Post by db2d » Wed Jun 13, 2018 9:51 am

E P - Extreme Pressure. Basically EP oils have additives added for high pressures, usually sulphurs and phosphorus. These additives can damage yellow metals. Use straight SAE 140.

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ollek
Posts: 3596
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Re: Reduction oil

Post by ollek » Wed Jun 13, 2018 11:09 am

The figure 140 relates to the viscosity (thickness) of the oil and EP is, as db2d said, Extreme Pressure oils. The SAE classification (viscosity) for transmission oils are SAE 75, SAE 80, SAE 85, SAE 90 SAE 140 and SAE 220. Bigger number donates s thicker oil. A EP oil have a GL 5 specification, and the oil to use in the wheel reductions are GL 4 classified. And please, use only mineral oils, synthetic or semi- synthetic oils are not recommended to be used in any application in a David Brown tractor. As said, use SAE 140, GL 4 in the wheel reductions.

John
Posts: 88
Joined: Sun Jan 15, 2006 5:48 pm
Location: Oldham,Manchester

Re: Reduction oil

Post by John » Wed Jun 13, 2018 11:30 am

Thank you

philedge
Posts: 170
Joined: Sun Dec 03, 2006 11:27 am
Location: Chester UK

Re: Reduction oil

Post by philedge » Sat Jun 16, 2018 7:10 am

If youre buying, get 5 litres. If your filling then fill to the level plugs on the back of the reductions. While youre in there, check the vents at the top rear are clear.
'66 880 Selectamatic rat.

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cobbadog
Posts: 383
Joined: Tue Oct 11, 2011 6:18 am
Location: beautiful Coopernook NSW. near Taree. NSW. Australia

Re: Reduction oil

Post by cobbadog » Sun Jun 17, 2018 7:04 am

The air vent on our 30C is at the top facing rearwards and is a hole through the length of the bolt. both of mine were blocked solid and cleaned them out using a drill bit and I simply twisted it by hand as it went in and pulled the dirt out. I suggest that while you are there also check the holes at the bottom of the brake drum area. They too get blocked and if they are opened up you can see if you have an oil leak into the brake area and can be fixed before damage to the linings occurs.

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