1967 990 Selectamatic - Final Reductions

[TheRosenator]

Having been a city dweller, my tractor and mechanical skills leave a lot to be desired. I have recently acquired a 1967 990 Selectamatic which runs well but I am trying to replace fluids amd some basic maintenance. Having already screwed up multiple times and before I drain and replace the “final reductions” - how much oil do they take? I have drained the transmission and put real oil in, done the oil bath filter, changed the engine oil and greased everything. Is there any other non-mechanical things I should do?

[GeoffDEAL]

Hi the manual says 90 gear oil 2.4 L or 4pts UK each, i think USA pints and qts are slightly different but gives you some idea.

[ollek]

You wrote that you have put "real oil" in the transmission. What do you mean by "real oil"? All informations about ois to be used in the tractor, as well as services to be done at different working hours, together with informations on how to use the tractor, can be found in the Operators Manual and you will need to get a manual as soon as possible. You can obtain a manual from the company in UK, using the following link http://www.davidbrownparts.com/Books%20 ... nuals.html The manual you need is the manual for 990 Selectamatiuc with 4/47 engine from 1965 (TP631). The manual will answer most of your questions and give you important informations about the tractor.

[philedge]

The reductions are filled to a level plug and the quantities give you the rough ammount youll need. Youll find a manual at the link below that shows the drain plug and level plug.
https://sites.google.com/site/deerebrow ... wn-info-ii

If you work your way through the manual youll find plenty of maintenance tasks to keep you occupied for a good while. One thing not covered is spraying all the tin work with WD40/rust inhibitor particularly the joints and inside any double thickness sections

[TheRosenator]

Thanks! I followed the advice here and got mineral oil (not synthetic). I have an old school paper maintenance manual I’m working through but sort of terrified to pull filters off because I don’t know what I’d be getting into!

[philedge]

Thanks! I followed the advice here and got mineral oil (not synthetic). I have an old school paper maintenance manual I’m working through but sort of terrified to pull filters off because I don’t know what I’d be getting into!

Other than the hydraulics, your 990 will likely be simpler to service than a car so youll be able to get help from a local auto mechanic if things go wrong. Youll likely find youtube videos for most of the jobs and can always ask on here☺

[cobbadog]

The best way to learn is to do it. As suggested if you are not sure ask here. Remeber that these are old school tractors, no electronics and computers, very basic but very efficiant tractors and for the most of it easily serviced by the owners.

[db2d]

I recommend asking on here before commencing any work. A lot of the information and techniques on YouTube and other places leave a lot to be desired!

[admin]

You can also purchase manuals, parts, decals, clothing etc from the DAVID BROWN TRACTOR CLUB LTD SHOP. www.dbtc.co.uk