Search found 1079 matches

by cobbadog
Mon Apr 19, 2021 11:40 am
Forum: David Brown Tractor Forum
Topic: New electrics
Replies: 12
Views: 163

Re: New electrics

Now this thread has my attention. I can't wait for the replies. Definately check your igniton timing, it wont cost anything but time. (pun intended). Could not stress enough to replace the condensor as well when changing your HT leads and points. It is a system that must work together to perform at ...
by cobbadog
Sun Apr 18, 2021 12:31 pm
Forum: David Brown Tractor Forum
Topic: New electrics
Replies: 12
Views: 163

Re: New electrics

I buy HT wire cored leads by the metre and fit new connections myself so that is yet another option. If you do buy from David Brown Spares they also have a set of colour coded HT leads which were on your machine from new. No matter which way you go buy a new condensor while your shopping it might be...
by cobbadog
Sun Apr 18, 2021 12:21 pm
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

I would be looking at his top link too for the haybob. If it clears the ground near the tractor and is touching the ground at the rear then top link issue is high on the list to look at. But with out a clear picture of the complete set up, tractor, lifting arms, top link and haybob we can waste time...
by cobbadog
Wed Apr 14, 2021 7:06 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

Sounds like there will be 2 fixes for the one problem, shorter top link will solve the problem. See if you can source a good second hand one or buy new from your dealer.
by cobbadog
Wed Apr 07, 2021 12:31 pm
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

Still no picture of your one. Are you able to post a picture of it so it might get resolved?
by cobbadog
Tue Apr 06, 2021 7:02 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

Still need a picture from different angles to work out what is wrong there. This is why I asked if there was an adjustment available like on some old ploughs or if there are other pins to connect it to that are down lower.
by cobbadog
Mon Apr 05, 2021 1:00 pm
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

Sounds like the mounting points on the implement are not correct.
by cobbadog
Fri Apr 02, 2021 6:32 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Gearbox, how noisy is too noisy?!
Replies: 29
Views: 677

Re: 990 Selectamatic Gearbox, how noisy is too noisy?!

If the manual states you can use use EP80 then yes it can be used. My thoughts are if there is an option on the grades of oil that can be used then I would relate the options to outside temperatures. A thin oil here in Australia during Summer would not be recommended in one of these gearboxes. A hea...
by cobbadog
Fri Apr 02, 2021 6:25 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

That seems to be a fairly high lift. You really should post pictures to see what is wrong.
by cobbadog
Thu Apr 01, 2021 3:22 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Gearbox, how noisy is too noisy?!
Replies: 29
Views: 677

Re: 990 Selectamatic Gearbox, how noisy is too noisy?!

I agree with you ollek, we are saying the same thing but errki mentioned about gearboxes not being noisey when new and it has been a long time since this model tractor was new. All too often you have corrected me when some small piece of information is either not correct or not applicable to the top...
by cobbadog
Wed Mar 31, 2021 12:04 pm
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Gearbox, how noisy is too noisy?!
Replies: 29
Views: 677

Re: 990 Selectamatic Gearbox, how noisy is too noisy?!

Thasnk you for your support on my reply Mike, that was the context in which it was posted not to be rude to another member. Ollek has a distinct dislike towards me and takes many oppourtunities to correct me when wrong and I certainly accept that but when the reply I commented on was stating that D....
by cobbadog
Wed Mar 31, 2021 11:58 am
Forum: David Brown Tractor Forum
Topic: Can an amateur fix a blown 885 head gasket/piston rings?
Replies: 4
Views: 161

Re: Can an amateur fix a blown 885 head gasket/piston rings?

Quick answer is yes you can replace a head gasket with basic tools but you will need a tension wrench. If you do take the head off it is certainly worthwhile to check the valves and reseat them to ensure they do what they are designed to do. Doing the valves is not an expensive exercise to reseat th...
by cobbadog
Wed Mar 31, 2021 11:43 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Linkage Geometry
Replies: 50
Views: 988

Re: 990 Selectamatic Linkage Geometry

Yes some good information offered up and will be helpful. Especially the full lift height which will give a good indication as to what you should have.
by cobbadog
Tue Mar 30, 2021 11:44 am
Forum: David Brown Tractor Forum
Topic: 990 Selectamatic Gearbox, how noisy is too noisy?!
Replies: 29
Views: 677

Re: 990 Selectamatic Gearbox, how noisy is too noisy?!

Very true arrki but we are not discussing a new tractor it is a 990 selectamatic so all of those issues will apply to make the noises dont you think?