Suzuki M109 Final Drive Oil Change | Suzuki Boulevard Rear Diff Fluid Change | Partzilla.com

Suzuki M109 Final Drive Oil Change | Suzuki Boulevard Rear Diff Fluid Change | Partzilla.com


The first thing we want to do is take a
21 millimeter socket and remove the drain bolt to our rear differential and
let the oil drain completely. Once it’s completely drained, we’ll go ahead and
reinstall a drain bolt. But this time, we’ll torque it the 16.5 foot-pounds. You
also want to make sure your crush washer is still intact because if it’s damaged
or missing you’ll want to go ahead and replace it to prevent any leaks. Now using a 17 millimeter socket, we’ll
go ahead and remove the fill bolt. Now it’s time to fill the rear diff with oil.
The manufacturer recommends that we use an 80W90 hypoid gear oil. I’m using Honda
in this case because I didn’t happen to have any Suzuki, but any 80W90 weight
hypoid gear oil or just fine. And you want to add 7.4 ounces to the rear diff.
That should be just enough where the oil begins to spill out of the fill hole.
And we’ll just wipe the excess off and then reinstall our fill bolt. We want to
just snug this down– you don’t want to over tighten it because the last thing
you want to do is strip it out. Now using some contact cleaner, we’ll go ahead and
clean off the surfaces of the wheel in case any oil got anywhere, because that
will create a slippery surface on the rear tire and that’s the last thing you
need. So now that we’re done, let’s hit the street.

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