JD 400D fuel in engine oil

[absoluteyukon]

Hey guys,

Working on a JD 400D (pin: DW400DT613014) with a Mercedes 501OM LA, end of last season it came back with a bad engine oil sample, diesel dilution. I'm not familiar with the machine history and have limited engine specific literature (JD SA). Pulled and resealed the EUI pumps, did the nozzle sleeves, resealed nozzles and fuel quills. Pulled the fuel transfer pump at the back of the engine and checked the shaft seal just to be sure, didn't look bad but couldn't find a new seal for it and Brandt wanted 10k for the pump which I wasnt ready to pull the trigger on. Got it all back together and it's been working for a few shifts, still building oil. First one I've ever laid a wrench on, so I'm just seeing if there is someone out there familiar with these that might have any other ideas before I condemn a transfer pump that doesn't have any obvious visual signs of failure.

Thanks in advance!

Ben.

 

[631G]

I’ll be curious to see if anyone has any input here. We’re looking a some D series trucks and would like to know what’s out there for help on difficult topics.

 

[thepumpguysc]

I’ve never worked on one but can u remove the trans pump and put air in 1 side while blocking the other and check for leaks.??

 

[mg2361]

Yukon, Check your PM.