A leaking seal is most likely related to āwear & tearā (maybe rust), and/or a leaking thru-bolt that connects the couplingā¦ Either way, itās an easy fix IF access is good and the gear is not a total rust bucketā¦
Be sure to polish out the seal landing area on the coupling using a lathe with 150G & oil before putting it all back togetherā¦ Install all with Rectorseal #5 and be sure to use grease on the seal contact area.
You will need a medium duty but small puller of some type to remove the coupling unless the bolt has been loose and the spline has wornā¦ As gears go, the 220A is easy to deal with IF itās EXTERIOR is not too rustyā¦ If it is, then you will need to be much more clever in dealing with it. The new seal can be matched at a good bearing house (maybe $35?). Good access will play a major roll in the amount of frustration for the jobā¦……
Standard RH thread – It is very tight & is supposed to be (275 NM). To loosen, we recommend to always use an good IMPACT wrench if possibleā¦ You just need the right tools. One to lock the hub and the other to loosen the BOLT.
As I said, access is the key along with the proper tools to do the job. Good Luck!!
