Oil & Fuel Deere 510 industrial, runaway diesel

turboseamus · Oct 13, 2019

I just bought a Deere 510 industrial tractor, loader/backhoe. It doesn稚 run currently, the guy I bought it from started to take the injection pump out but got sick so never finished the project. He said he was digging a stump out and the engine started to runaway and he got it shut off by stalling it out. I have been doing a little reading, and injection pump seems to make sense to a point, but sounds like most people say the Roosa-master pumps don稚 really runaway. The other part to this is he said he had just had the head gasket replaced before this happened, less than an hour run time since. This is a non turbo 4.4L 4 cylinder, pretty basic. Just wondering if there was something that could have gone wrong with the head gasket replacement that could cause runaway, or should I just send out the pump? I知 a car mechanic and I know how diesels operate for the most part, but I haven稚 really had to work on them much.

RickB · Oct 13, 2019

The governor retainer ring in the injection pump has failed. It is a common failure, a runaway is a possible consequence of that failure.

dodge man · Oct 13, 2019

They will run away with fuel or oil. I could see a head gasket problem making it suck oil. Enough to make it run away? I wouldn’t think so as I think it would just suck oil into one cylinder. It could be several things.

turboseamus · Oct 13, 2019

So that痴 an injection pump rebuild then. Does anyone know a reputable place to send it to?

jd110 · Oct 13, 2019

Not sure what area you are from but around here, a lot of people use Diesel Pro. Diesel Engine Parts & Service In South Central PA - Diesel Pro

beenthere · Oct 13, 2019

You might send a PM to member thepumpguysc as he has posted good information about injection pumps, and might be of some considerable help.

Wish you well sorting it out, and :welcome: to TBN

turboseamus · Nov 4, 2019

As an update, I took the injection pump apart and the weight retainer plastic ring was broken. I replaced it with the Stanadyne solid replacement and reseal kit. Put it back in and it seems to run great.