Search found 455 matches

by cobbadog
Thu Apr 18, 2019 7:59 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 186

Re: Dynamo and regulator wiring

Finally got it attached.
by cobbadog
Thu Apr 18, 2019 7:57 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 186

Re: Dynamo and regulator wiring

Here is a schematic diagram for a 6v +earth wired David Brown. It shows 2 wires only from the dynamo, both going directly to a separate regulator using an unidentified terminal and "D". Ammeter is wired between terminal "A" on the regulator and - on the battery. It also shows a lighting schematic. H...
by cobbadog
Wed Apr 17, 2019 6:58 am
Forum: DBTC Forum
Topic: Spun bearing on 990
Replies: 9
Views: 134

Re: Spun bearing on 990

If this is your tractor and you are going to put it back towork don't mess around have your crankshaft machined properly. You will thank yourself for that later on in years of reliable use. Once machined you will then know what size bearings you need to buy. Simply cleaning up the journals is not th...
by cobbadog
Wed Apr 17, 2019 6:48 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 186

Re: Dynamo and regulator wiring

We have a TEA20 which was a 6v system and now runs an 12v alternator as fitted by the previous owner. It copes easily using the 6v starter.
I have a diagram of a 6v system on a D.B. and as best I can tell shows the normal + earth.
by cobbadog
Wed Apr 17, 2019 6:42 am
Forum: DBTC Forum
Topic: Hydraulic take off on db 25
Replies: 2
Views: 58

Re: Hydraulic take off on db 25

Start by doing an oil change and a flush out then top up with clean oil after washing the filter at the bottom of the gearbox. Order some nice new copper washers and fit them. Make the bolts firm but not too tight This would at least fix these issues then go from there.
by cobbadog
Wed Apr 17, 2019 6:36 am
Forum: DBTC Forum
Topic: 950 implematic exactor coupling
Replies: 12
Views: 236

Re: 950 implematic exactor coupling

To me, I would like to think that you would use matching couplings to be certain that the connection works properly and then there should be no need to replace a fitting unless you smashed it with a hammer. I operated hydraulic rock breakers for only about 4 years on the same machine and the same co...
by cobbadog
Sun Apr 14, 2019 5:53 am
Forum: DBTC Forum
Topic: Cropmaster gauges
Replies: 8
Views: 133

Re: Cropmaster gauges

Was there any reason why 2 of the 3 gauges were made white a white background and the ammeter was black? The third hole was for a water temp gauge but if your tractor came with the calorimeter then they did not fit the water temp gauge in the dash board (not scuttle plate). The suttle plate is the p...
by cobbadog
Sun Apr 14, 2019 5:47 am
Forum: DBTC Forum
Topic: Sparks
Replies: 5
Views: 115

Re: Sparks

Your embers comming out from the exhaust may also be from loose carbon from when you pulled the injectors out. While waiting for the new washers, go through the rest of the items listed above and also put your battery on charge so that it is up to spec when it is time to fire up. Once you are sure a...
by cobbadog
Fri Apr 12, 2019 6:36 am
Forum: DBTC Forum
Topic: 885 mystery part
Replies: 10
Views: 283

Re: 885 mystery part

Hi Ollek,
thanks for the link.
Obviously we know about zippers in clothing but when the same term is used on describing tractor parts it did not register even when some words have more than one meaning.
by cobbadog
Thu Apr 11, 2019 5:49 am
Forum: DBTC Forum
Topic: 885 mystery part
Replies: 10
Views: 283

Re: 885 mystery part

What on earth is a 'zip or zipper"?
by cobbadog
Wed Apr 10, 2019 7:01 am
Forum: DBTC Forum
Topic: A couple of David Browns
Replies: 5
Views: 226

Re: A couple of David Browns

In the district where this tractor lives you pretty much benefit a lot from duals as the terrain is very hilly and a number of weekend farmers have had an 'upside down' moment because of lack of experience. Still it is something different and not seen too often and is an eye catching unit.
by cobbadog
Tue Apr 09, 2019 5:39 am
Forum: DBTC Forum
Topic: Coolant
Replies: 9
Views: 297

Re: Coolant

Agree about the caterpillar product but we have some very concentrated coolants here and if mixed at 50:50 would still be too strong for the application. they do this to condense the packaging size and weight for ease of handling.
by cobbadog
Mon Apr 08, 2019 5:43 am
Forum: DBTC Forum
Topic: Hold Valve 990
Replies: 10
Views: 270

Re: Hold Valve 990

I would try the least harmful way first, polish with Brasso or similar. the only thing I can think of by using 1500 wet n dry paper is that you must ensure it is clean of all carborundum grit as that would chew up your seals. I too have read the posts about the ball bearing and some models seem to h...
by cobbadog
Mon Apr 08, 2019 5:38 am
Forum: DBTC Forum
Topic: A couple of David Browns
Replies: 5
Views: 226

Re: A couple of David Browns

The 25D has an old Ox Cart axle with the ends slightly trimmed to width. It definitely wont give if ever tested. The dual wheels are also non standard but it is what he wanted so he did it. His only issue with them is that the design they built them buy requires a lot of work to remove them to trans...
by cobbadog
Mon Apr 08, 2019 5:34 am
Forum: DBTC Forum
Topic: Coolant
Replies: 9
Views: 297

Re: Coolant

Check and make sure you haven't bought a pre mixed coolant before breaking it down further. Here in Australia you can buy it so that it is poured straight in and then the ones you mix depends on the climate you live in as to the ratio you mix it. Cooler climate requires more glycol product. This inf...