Another 600 ? but Diesel This Time

Bobl1958 · Jun 27, 2016

I have a big 600 diesel as well that had been sitting awhile. The fuel must have leaked through the older Bosch pump and into the crankcase. I didn't realize it as we were trying to start it, but it did start and run pretty good until I noticed fuel trying to spit out the oil dipstick. I shut it off (it had ran about 3 or 4 minutes) and figured there is obviously a seal out in the pump.

Would anyone know if that seal would happen to be an easy fix, or does the pump have to come off. Thanks again for any help - Bob

D-C-741 · Jun 27, 2016

I picked up a super 400 that way ,Might fix if It's a easy fix ?or it's just going to go for parts' or whole the way it set's.

Nedd · Jun 27, 2016

Just change the oil and turn off the fuel when not using it. That's what I do. Fuel doesn't seem to leak while being used.

John Saeli · Jun 28, 2016

Very easy fix. The culprit is the seal in the transfer pump, located on the side of the main pump. It has the 4 small machine screws holding the square cover on.

Bobl1958 · Jun 28, 2016

Many thanks John. I was hoping someone might know the possible culprit. I'll check that. Thanks again

Ken Jentges · Jun 28, 2016

I have the same problem on my 900, its a 57 with the rotary pump. Same fix?

rfdmn · Jun 28, 2016

[quote="Bobl1958 I replaced the transfer pump seal on an 800 and still hade fuel leaking into the engine oil turned out there was a seal in the injector pump leaking. Pump man said biofuel is hard on seals made from older material.

Another 600 ? but Diesel This Time

Bobl1958

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D-C-741

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Nedd

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John Saeli

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Bobl1958

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Ken Jentges

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rfdmn

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