john deere 750 torque specs

[annettee66]

need the torque spec for head bolts rod and main john deere 750 with a yanmar 3t80uj

[winston1]

First 29 ft lbs, 2nd 58 ft lbs, last 72-79ft lbs working from middle toward ends. Rod bolts 16.6 to 20.2 ft lbs. I have basically the same engine as you in my ym2002d. It is a 3t80u-nap. This information came out of a ym220/226 manual which has a 3t75ha engine. Closest to my grey market per Hoye. I have checked out part numbers and know the head bolts are both m12. Part numbers are the same on rod bolts so I have confidence the numbers are correct and would bet a dollar to a donut they are correct for you also. Proceed at your own risk.

[annettee66]

ok thanks , now can you tell me if fuel could be getting inti crankcase from the injector pump . I have fuel coming out from around the pump where the shims are . was told there are no gasket there just shims , so could the fuel be getting into crank case from there ? Have not pulled pump yet thats next . Thanks

[buickanddeere]

A few sentences on the Internet is a poor substitute for an operators and service manual. There are many more important specs to check.
1-800-522-7448

[winston1]

ok thanks , now can you tell me if fuel could be getting inti crankcase from the injector pump . I have fuel coming out from around the pump where the shims are . was told there are no gasket there just shims , so could the fuel be getting into crank case from there ? Have not pulled pump yet thats next . Thanks

Yes, fuel can get into the crankcase from there. If you have fuel in the crankcase that is most likely where it is coming from.

[annettee66]

fuel is coming around the shims tried to tighten but was not loose so ill take off and check

[winston1]

fuel is coming around the shims tried to tighten but was not loose so ill take off and check

What is the level in your crankcase??

[annettee66]

crankcase showes full to top mark

[winston1]

crankcase showes full to top mark

Are you sure diesel is not running down from the injector pump lines, either suction or injector lines? Reason I ask is that if your pump was leaking into the crankcase it should overfill the crankcase before it starts coming out around the shims.

[annettee66]

just checked its bubbling out around base of pump where it touches block .