My 1972 JD 820 is making oil.......help

cartod · Mar 6, 2014

I have a 72 deere 820 that the oil level is rising on. Compression check on radiator shows not coolant. Oil doesn't smell like diesel. Can hydraulic fluid get into oil????

Tx Jim · Mar 6, 2014

Hyd oil can't get in radiator. I'll bet it's diesel.Since a lot of sulfur has been removed diesel doesn't has the same odor. 1st place to check for fuel leak is lift pump on the side of engine.

cartod · Mar 6, 2014

Tx Jim said:
Hyd oil can't get in radiator. I'll bet it's diesel.Since a lot of sulfur has been removed diesel doesn't has the same odor. 1st place to check for fuel leak is lift pump on the side of engine.

Cool. Thanks that's where ill go first....after I drain some oil. Is there another name for the lift pump? cant find it in manual???? injection pump? transfer pump?

Tx Jim · Mar 6, 2014

Transfer pump

jenkinsph · Mar 6, 2014

I agree with Jim, if the pump leaks to the crankcase that would cause your problem. Hope that is your problem as it is a cheap fix compared to anything else. I bought a replacement from NAPA without the bowl for about $40.