Both transmission drive shaft & PTO drive seals are located behind the belly pump. Remove the pump drive shaft & the PTO seal is right there where the pump drive connector was located. Put the transmission in reverse & lock the brakes. Use a bar or pipe wrench to unscrew the drive lug, lefty-loosey. Remove the 3 cap screws & the housing comes off with seal attached. Replace the seal & gasket, replace the 3 cap screws, screw the drive lug in, righty-tighty, & you are done. Some oil will leak thru the bearing while you are replacing the seal. No need to tighten the drive lug much, it self tightens when the pump is used. Transmission drive is similar but you must remove the drive shaft coupler to get at the seal. Tip: when the nuts are off the tapered bolt, hold the coupler drive with a pipe wrench & turn the tapered bolt to loosen. Don’t try to drive it out or damage will happen.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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