Tag Archives: Mimbolovedumper
Turned out the poor performance didn’t have anything to do with the engine – the right hand front brake was seized on! Good job I didn’t go to the hassle of changing the diesel injector!
The brakes have now been sorted together with new oil, new oil filter, air filter and fuel filter. I am proud to say that I managed to do it all myself. It seems to run a bit better although I do wonder if it was worth all that effort.
Despite its age, parts are readily available and I even managed to find a maintenance manual online.
This is a 1976 15cwt Thwaites dumper. Just in case anyone is interested, it is powered by a single cylinder Petter PH1 diesel engine. We had quite a few problems getting it started, but finally succeeded by bump starting pushing it down a hill. We did manage to start it after this using the crank. We half filled it with stones before it finally conked out going up a slope in the bottom field. Now, it will not restart.
I am guessing that it is a problem with the fuel lines – the engine turns over and has no electrics, so it can’t be much else other than a lack of fuel. The tank is half full so I suspect that driving it up a slope caused dirt to get into the system somehow. This would also explain the lack of power when we started her up. Looks like the next job is to strip the fuel side of the engine and give it a quick clean. I will take the injectors off first, and crank the engine, to see if it is delivering any fuel.