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Engine #12 - Oil Seal and Sprocket

Life's a bitch...   Thank God there's Harleys...

Here's a few pictures that T made during re-assembly of the Harley oil seal and sprocket wheel onto the main shaft of our 1973 Harley Ironhead Sportster engine. LnT purchased a new oil seal and a new gasket for the Harley oil seal housing. Other Harley Davidson Sportster parts were cleaned, polished and re-used as much as possible.

Photo of main shaft roller bearing washer and main shaft roller bearing retaining ring of a Sportster Ironhead engine using original Harley Sportster parts - by Harley Oldschool Bobber. Here the main shaft roller bearing washer has been slid into place over the rollers, and is now covered by the main shaft roller bearing retaining ring (arrow). We are now ready to install the oil seal.


Photo of new Harley oilseal and a new gasket for the oil seal housing ready for installation onto Harley Ironhead main shaft - by Harley Oldschool Bobber. LnT bought a new Harley oilseal and a new gasket for the oilseal housing. On this photograph all parts are ready for installation onto the main shaft of the Sportster tranny.


Photo of Harley oil seal housing of a 1973 Sportster Ironhead motor - by Harley Oldschool Bobber. On this photo the oil seal and gasket are fixed in place, you're looking at the top of the oil seal housing.


Photo of oilseal housing of a Harley Ironhead Main Shaft - by Harley Oldschool Bobber.


Photo of sprocket wheel fixed onto the main shaft of 1973 Sportster Ironhead motor - by Harley Oldschool Bobber. After we completed the installation of the oil seal, the sprocket wheel was fixed onto the main shaft. At this stage our new lockwasher for the sprocket wheel had not yet arrived, but for all practical purposes:

Another milestone achieved!