I would have done the hole thing myself if I had the time. I have heard of people even JB welding the pin into place and patching the hole in the case. Whatever is wrong, if it runs good, fix it. Posted 08:48 (#631250 - in reply to #631167) Subject: Re: 5.9 Cummins oil leak in Dodge I don't necessarily love any part of the Dodge trucks, but that engine will keep me on their side. That year of truck could easily have a crank seal that is leaking. I have fixed numerous front crank seals on the 5.9 engines. Crawl under the truck and look around the front dampner. You will be able to tell if the oil has been leaking from there and the dampner slinging it out. Pull the radiator and fan shroud off, remove the belt and 4 bolts holding the dampner. Remove the front cover to replace the front crank seal. Do a search on the KDP (killer dowel pin ). You can buy a kit that has the crank seal, silicone for the front cover and a tab to keep the pin from ever falling out.
These are available from Geno's Garage or TST Products, to make 2 sources. Take a look at the water pump for leak at weep hole, while you are at this point. Posted 08:51 (#631253 - in reply to #631237) Subject: Re: 5.9 Cummins oil leak in Dodge Two bolts and you can have water pump out. This last Oct I had the front seal replaced and a speedy sleeve put on the crank. The dowell pin fell out as it was idleing and locked up the engine. The oil leak was 450 dollars a month later the front cover, new gears, new front plate, pulled inj pump to check it out, new injectors, set the valves, and labor.6100 dollars.
Now it runs better than ever ,I also put a 4in exhaust on it. Yes sometimes you can just have a leak but you just as well make sure the dowel pin is updated at the same time.
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