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JD 70 DIESEL LUBE OIL PATH

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BOB

06-24-2001 06:44:06




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I HAVE A JD 70 DIESEL THAT ALWAYS WEARS OUT ITS THRUST BEARING. I SPUN THE ENGINE AT 1000 RPM WITH ITS FLYWHEEL AND THRUST BEARING CAP REMOVED.
THERE WAS NO OIL COMMING INTO THE THRUST BEARING HOUSING FROM THE TOP OIL PORT AND ALMOST NONE COMMING IN FROM THE BOTTOM PORT. I THINK THE TOP PORT IS SUPPOSED TO BE DRIP FED FROM SOMETHING ABOVE IT.

DOES ANYBODY KNOW THE LUBE OIL PATH THAT IS SUPPOSED TO LEAD TO THRUST BEARING HOUSING?

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G Taylor

06-24-2001 08:26:52




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 Re: JD 70 DIESEL LUBE OIL PATH in reply to BOB, 06-24-2001 06:44:06  
The 70D oils the center bearing through the crank from the two outer bearings. The 720/730 had a oil pipe ran to the center bearing for a direct supply. Lots of pressure & flow are vital with clean premium grade oil.Copper rifle brushes run through all oil passages often find obstructions & debrie. What are you setting the crank end play at & what clutch, flywheel & crank history does the tractor have?

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