annettee66
New member
need the torque spec for head bolts rod and main john deere 750 with a yanmar 3t80uj
john deere 750 torque specs
- Thread starter annettee66
- Start date
- Views: 20103
-
- Tags
- john deere 750
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. 
OP
annettee66
New member
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
Super Member
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
1-800-522-7448
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.
OP
annettee66
New member
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??
OP
annettee66
New member
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.
OP
annettee66
New member
just checked its bubbling out around base of pump where it touches block .
