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Herc 478 oil leak

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L. Johnson
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Joined: 23 Apr 2013
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PostPosted: Wed May 15, 2013 5:21 am    Post subject: Herc 478 oil leak Reply to specific post Reply with quote

On our 2-135, there is quite a bit of oil coming out the front of the engine. I got after it with a pressure washer yesterday and cleaned it down to the paint. I ran it hard a few hours getting fields ready and then checked it and it looks like the oil is coming from a hose or fitting that goes into the head right above the waterpump housing. The blast from the fan basically paints the whole engine so it is a little hard to pinpoint the origin. It looks dry around the front seal, which is where I thought the leak was from originally. It looks like the hose is about 1/4" and it runs along the block and looks like it goes into the back of the rear head. Is this part of the oiling system for the rockers or something? I guess I could order the parts new, but is it just common hydraulic hose? I have not seen a similar hose on other diesels.
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Lee Wegner

Joined: 22 Oct 2009
Posts: 82

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PostPosted: Wed May 15, 2013 9:47 am    Post subject: Re: Herc 478 oil leak Reply to specific post Reply with quote

The oil line is for the rocker lines they had trouble with the early engines leaking oil out of the head gaskets. They came out with a better head gasket too fix the problem
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