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WD Pistons and Rings

A

Andy Airgood

Member
I bought a rebuild kit for my WD from yesterday?s tractors and
have a few questions. On the original pistons there was a
correct way to install them based on the side the T groove
was on. The new pistons don?t have a T groove and the only
distinguishing features are the letters stamped on top of the
piston and a green sharpie dot on the bottom of the piston.
Does it matter which direction the new pistons are installed?
The instructions for the oil ring noted four pieces but only 3
came with the kit. The upper and lower rings and the steel
spacer. Is there supposed to be a fourth ring of some sort?
Last question is if there is a recommended gap between the
ends of the rings once inside the sleeve?
 
(quoted from post at 17:03:23 09/18/19) I bought a rebuild kit for my WD from yesterday?s tractors and
have a few questions. On the original pistons there was a
correct way to install them based on the side the T groove
was on. The new pistons don?t have a T groove and the only
distinguishing features are the letters stamped on top of the
piston and a green sharpie dot on the bottom of the piston.
Does it matter which direction the new pistons are installed?
The instructions for the oil ring noted four pieces but only 3
came with the kit. The upper and lower rings and the steel
spacer. Is there supposed to be a fourth ring of some sort?
Last question is if there is a recommended gap between the
ends of the rings once inside the sleeve?
Click to expand...
If I was you, I'd be making a phone call to your supplier. There should ne INSTRUCTIONS with that motor kit to help you. I'd make the piston orientation the same for all four. The rings might be 3-piece or 4-piece or one-piece. Again, where are the instructions ?? Call your supplier. I truly hope you understand how the connecting rods are to be offset on the piston pins or you will ruin your new motor kit when you start the engine. Again, the instruction sheet should address this. Then, there are the shims on the connecting rods caps (WD, not WD45) and shims on the main caps....
 
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