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Couple quick questions concerning installing oil pan on this Yanmar. First does the oil pan gasket require any goo to make a leak free installation, new gasket not reused if that's ever possible. Second is there a torque pattern that should be followed when reinstalling the pan? Thank you.
Here is a torque chart. I believe your bolts are m8 but I don't know the grade. Found this posted by Aaron. Pretty sure your 1500 has the same pan bolts. viewtopic.php?f=2&t=516&p=1703&hilit=torque+pan#p1703
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Thank you Mister Winston, I have added those values to the tractor file. Anyone have the pattern in which to tighten the bolts down? Last oil pan I serviced was a 1972 Ford Pinto and I recall Chilton's saying there was a sequence to how the pan was tightened. Thanks to all.
I don't know for sure but "most" times anything is torqued starting in the middle, then across at an angle and just keep working toward the outside. Here is sort of what I am talking about.
I usually just put a very light skim of RTV gasket maker on both sides of the gasket. What you don't want is to use too much where it oozes out and makes blobs that will break off and go into your engine.
So finally was able to procure a oil pan gasket. Cleaned the oil cavity with rags, plastic brushes and kerosene. Came out pretty clean. The gasket that was sent was same material as original that I removed, but only had twelve holes instead of sixteen. I clipped the gasket to the oil pan cover with binder clips and aligned the twelve holes and took a mechanical pencil and traced the four additional holes. I flipped the gasket back and forth to find the best fit for the new holes. I used the arbor press and a fired 308 Winchester case to cut the holes in the gasket which worked really well. Used Permatex Ultra Black for sealant. I highly recommend that you use a marker to number the bolt holes for tightening sequence as it can be a lot easier to keep track of the bolts. Tightened four times, once with a ratchet with no leverage, three times with torque wrench, 15, 17 and 18 pounds. After snugging the oil pan up with ratchet I waited an hour to torque the bolts and waited 24 hours before adding oil. No leaks as of yet two days and counting. As I was positively sure there was zero oil in tractor I creeped up to the four quarts of oil which took me to the top mark on the dip stick. Also prefilled the new filter. Definitely have piece of mind that the dirt and sludge has been removed from the pan.
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