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Case Tractors Discussion Forum
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David Brown Taskmaster - Engine trouble?

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SAm in NS

09-21-2005 13:30:08




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Hello, a friend has recently purchased a petrol/TVO taskmaster and although it looks pretty enough from above the engine doesn't seem to perform as I think it could. It carries very low oil pressure (in other words none) until about half throttle although I have not yet verified the gauge (any suggestions?). It also misses a lot and will occasionally backfire - especially when warm and suffers from very low power. Any ideas of what I should check and what might be causing the problem/s? Also does anybody know what other engines (from other DB tractors) will fit? Many thanks, SAm in NS

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Baz

09-25-2005 22:59:59




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 Re: David Brown Taskmaster - Engine trouble? in reply to SAm in NS, 09-21-2005 13:30:08  
I had an oil pressure problem on a diesel version of these engines. On the end of the oil pump is a mesh screen. This was blocked with sludge. There should be a 4" square plate on the bottom of the sump, remove this to remove the screen. Then you will see the relief valve plug with lockwire through it. There were several changes to the oil system on these early models. Some had by-pass valve and/or relief valve in the oil filter housing. Engine missing: check the usual electrics, when it is running spray engine start around the inlet manifold and carb, if engine revs increase you have an air leak; a crack or warped housing. I have found all carb housings need stripping and facing flat again. This makes a huge difference to the running.

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