Frank 23 Posted December 13, 2020 Report Share Posted December 13, 2020 Worked on removing the leaking injector pump from our Perkins 4108. In true british engineering fashion and after 6 hrs of cursing the last bolt requires a 7/32 ball ended allen key bit on a 600 mm extension shaft with a universal joint in the middle. Gotta love old english diesel engines....not. jim s 1 Quote Link to post Share on other sites
aardvarkash10 132 Posted December 13, 2020 Report Share Posted December 13, 2020 1 hour ago, Frank said: Worked on removing the leaking injector pump from our Perkins 4108. In true british engineering fashion and after 6 hrs of cursing the last bolt requires a 7/32 ball ended allen key bit on a 600 mm extension shaft with a universal joint in the middle. Gotta love old english diesel engines....not. at least they don't rust on the outside... Quote Link to post Share on other sites
KM... 820 Posted December 16, 2020 Report Share Posted December 16, 2020 Start on my 1800 trees, a little excited. aardvarkash10 1 Quote Link to post Share on other sites
Frank 23 Posted December 16, 2020 Report Share Posted December 16, 2020 On 14/12/2020 at 8:09 AM, aardvarkash10 said: at least they don't rust on the outside... The symptoms that caused it to be removed were interesting, basically the seal on the input shaft leaks causing fuel to contaminate the engine oil. Eventually the diesel rich mix gets to the point where it will support combustion then the engine revs madly independent of the throttle and the fuel cutoff wont stop it. To add to the alarm it is attended by billowing clouds of white exhaust, I'd never heard of such a thing nor experienced it until now. In any case its a known issue with the CAV pumps on the Perkins but hopefully we have not done any damage, I stopped it by throwing it into gear when the revs cycled down. aardvarkash10 1 Quote Link to post Share on other sites
Fish 594 Posted December 16, 2020 Report Share Posted December 16, 2020 The other way to stop it is to block the air inlet. I've never experienced a run-away engine, but I have practiced blocking the air inlet at the silencer to kill the engine. Only issue with this is having to get up close to an engine that you are worried is going to explode... Quote Link to post Share on other sites
aardvarkash10 132 Posted December 16, 2020 Report Share Posted December 16, 2020 36 minutes ago, Fish said: The other way to stop it is to block the air inlet. I've never experienced a run-away engine, but I have practiced blocking the air inlet at the silencer to kill the engine. Only issue with this is having to get up close to an engine that you are worried is going to explode... I've seen a VERY large diesel go into runaway. Ain't no way I was going anywhere near it and I suspect it would have sucked a horse up the intake with little obvious impact except to the horse. Quote Link to post Share on other sites
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