Is the John Deere 8640 a pay loader?
Is the John Deere 8640 a pay loader?
It did not stand up well in the ag tractor but in the John Deere pay loader it ran untouched for many thousands of hours. Many of the 8430 8630 8440 8640 8450 8650 8850 have had head gasket issues. They are costly to fix because of the labor to do a clutch job you have to disassemble so much of the tractor.
How tall is the exhaust on a John Deere 8640?
I have the John Deere technical manual for a 8630 that used the same engine. Head bolts were tightened to 140 to 160 ft-lbs then 175 to 180 and after break in to 205-215 ft-lbs. Valve clearance intake .013 to .017 and .023 to .027 in on exhaust. Liner height on used block .000 to .004 in.
Do you need to replace the head gasket on an 8640 JD?
I may have to replace the head gasket in a 8640. It has low hours on a rebuild but is leaking a little water on the out side i havent seen it yet. If i cant find a manual is there some one hear that can tell me torque on head bolts, how to set the valves and any thing that i may need to do special?
Why does my 8640 JD engine leak water?
Many of the 8430 8630 8440 8640 8450 8650 8850 have had head gasket issues. They are costly to fix because of the labor to do a clutch job you have to disassemble so much of the tractor. i tought these big JD engines Always leak water at the gaskets..
It did not stand up well in the ag tractor but in the John Deere pay loader it ran untouched for many thousands of hours. Many of the 8430 8630 8440 8640 8450 8650 8850 have had head gasket issues. They are costly to fix because of the labor to do a clutch job you have to disassemble so much of the tractor.
I have the John Deere technical manual for a 8630 that used the same engine. Head bolts were tightened to 140 to 160 ft-lbs then 175 to 180 and after break in to 205-215 ft-lbs. Valve clearance intake .013 to .017 and .023 to .027 in on exhaust. Liner height on used block .000 to .004 in.
Many of the 8430 8630 8440 8640 8450 8650 8850 have had head gasket issues. They are costly to fix because of the labor to do a clutch job you have to disassemble so much of the tractor. i tought these big JD engines Always leak water at the gaskets..
I may have to replace the head gasket in a 8640. It has low hours on a rebuild but is leaking a little water on the out side i havent seen it yet. If i cant find a manual is there some one hear that can tell me torque on head bolts, how to set the valves and any thing that i may need to do special?
