Hello, I have a Takeuchi tb80fr 2004 with around 6500hrs that has a fault with the main boom not lifting. All other functions work well. Sometimes it kicks back into life but it doesnt last very long, usually when you stop operating it for a few moments. It does lift when i fully open or close another cylinder and hold it in that postion ie hold the pressure on that cylinder. Usualy i use the bucket cylinder. There was a thread a few years ago but not sure what the out come was. I have cleaned out the hydraulic tank and put fresh hydraulic oil in. No signs of anything in the tank. Based in the UK
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