Always use a light oil in the cylinder while you are doing this. 

Putting the rings on the piston.

Before you put the piston with new rings back in the block, you need to hone the cylinder walls to remove the glaze from the cylinder walls.  This is done with a cylinder hone that in most cases has spring loaded hones on a device that can be driven by a drill.  Do not do this dry.  Always use a light oil in the cylinder while you are doing this.  The hones are soft and will ware fast.  You should get a good crosshatching by moving the drill in and out as you do this.

I have been told that this is to retain oil while the new rings are being broke in.  The instructions in the box of rings from John Deere say to use SAE10 oil for the first 20 hours, idle first, do not run over 3/4 full throttle during this first break in period.  After 20 hours you are supposed to change oil and filter.

Along about now you might be wondering why you started such a project instead of farming it out.  The above picture is a reason why.  It's a piece of wood, compared to a 3/4" wrench, that I  took out of the crank case.  Another reason is that some one put the wrong size of rings in the last ring job.

John Deere B Restoration Story | Initial Evaluation | Clutch Rework | Engine Disassembly | Pistons and Cylinders | Head Restored | Sites by B's New Home | Directory of Recommended Links

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