David Brown Tractor Forum

Sounds like a possible safety switch on the gear box, but you really need to buy or get a copy of a service manual. The other thing that helps to answer your questions are pictures.
these will need to be compressed to be able to be posted but as they say a picture is worth a thousand words.

Unfortunately this is happening all around the World so for the time being we have to wait.

With any fuel lines I have had trouble with I made new lines using copper tube and new olives. None ever leaked again and the cost was minimal. Have a look not only at the olive but the taper it has to fit against, maybe replace it too. These connections when in good condition only need a slight 'ni...

On the Home Page of this Forum, at the top of the page is a box with New Topic or similar, click on that and you can start a new thread. As suggested, start a new thread for each different issue so it is not confusing as to which issue it is you would like help with. The next thing that also helps a...

Can you send your endoscope down into the darkness for a look for it? they are handy little things too.

G'day fl4, Why not replace any and ALL filters as you come across them? If you start to eleminate possibilities you can then move forward to resolving the issue. Because a well known company has worked on the tractor in the past does not mena that mistakes were not made not short cuts taken at that ...

Thanks for the link Ollek. No, I never knew there was a 3rd piston working away hidden inside the crankcase. In later model engines I have heard of counter balance shafts etc but not this sweet little fix.

I was just now reading my May edition of Tractor & Farming Heritage magazine. There is a brief story there on the David Brown 2D and in it they mentioned there was an issue with the 14hp engine for the 1956 model was having a vibration problem. It then mentioned a gentleman by the name of Bert Ashfi...

If it is fibreglass there are special types of adhesives to bond fibreglass to fibreglass or to steel as in the case of the Corvette body to the chassis. I would not think that fibreglass resin would do as well as the special types of adhesives.
A picture of the problem would help.

Also when changing the oil give the transmission a good flush out using diesel and drive slowly for a short distance hitting the brakes hard to mix the diesel around to wash the inside.

Thanks for the info, I never realised the difference as I haven't seen many diesel ones around here and at rallies they are all covered up with side panels. It will make for a good tractor once you have it running properly and will not be as common as the TVO engines as they are over here. In the 4-...

Gday mate. Did you find the diesel engine and fix it then put it in a Cropmaster or did the engine originally come from that tractor?
In the pic the rocker cover looks different to what I remember them being a pressed metal cover.

The plot thickens.

Thats when those Murphy Gauges come into their own, they shut the engine down when readings are not right.

Its unusual that a new 'olive' does not fix the problem and maybe the issue is the fuel is leaking between the olive and the pipe. In some cases when the nut is tightened too much it crushes the olive onto the pipe a bit too much and when you move the pipe and replace it the pipe may be fractured or...