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Dave (NE) 
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Joined: 12 Sep 2009
Location: Eagle Nebraska
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 Posted: 18 Jun 2020 at 3:23pm |
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Found that zirk Tim mentioned. Had never put any grease in there before. Hope I am preventing a problem.
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Do not argue with an idiot. He will drag you down to his level and beat you with experience. Mark Twain.
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Dave (NE)
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Joined: 12 Sep 2009
Location: Eagle Nebraska
Points: 2157
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Posted: 18 Jun 2020 at 2:35pm |
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I never knew that was supposed to be a breather plug in the 90 degree elbow pipe fitting. Did you figure out what size it is? I should get one of those bronze breathers too. This has been an informative learning post. I checked, and my 5 foot snap coupler shredder appears to have some sort of breather plug on it which I think I should replace with the bronze type as shown in the surplus center site. Dave
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Do not argue with an idiot. He will drag you down to his level and beat you with experience. Mark Twain.
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garden_guy
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Joined: 05 Jul 2013
Location: Illinois
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Posted: 17 Jun 2020 at 10:04pm |
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No worries -- that's my plan, haha! ;)
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
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Posted: 17 Jun 2020 at 5:11pm |
 garden_guy wrote:
DiyDave wrote:
Plug in the elbow should have a vent in it.
Best ones have a sintered bronze insert, that lets air in, but not dirt. I've seen home made ones, where a hole is drilled upward, from the bottom of the plug, then another hole is drilled on the side of the plug, to meet the other hole.
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Thank you for this! I am going to order one and see if this helps me out.
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Check the size, on your plug, before ordering, the link was an example, only... 
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Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
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garden_guy
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Location: Illinois
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Posted: 17 Jun 2020 at 2:14pm |
DiyDave wrote:
Plug in the elbow should have a vent in it.
Best ones have a sintered bronze insert, that lets air in, but not dirt. I've seen home made ones, where a hole is drilled upward, from the bottom of the plug, then another hole is drilled on the side of the plug, to meet the other hole.
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Thank you for this! I am going to order one and see if this helps me out.
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
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Posted: 17 Jun 2020 at 4:53am |
Plug in the elbow should have a vent in it.
Best ones have a sintered bronze insert, that lets air in, but not dirt. I've seen home made ones, where a hole is drilled upward, from the bottom of the plug, then another hole is drilled on the side of the plug, to meet the other hole.
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Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
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garden_guy
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Posted: 16 Jun 2020 at 9:12pm |
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Hmmm seems like I have just "plugs" on both the "fill hole" (that is basically a 90 degree pipe elbow that faces up?), and the side hole which I have always assumed is the "level plug", for how I've always filled it. Don't see a vent in either, unless I am missing something.
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DiyDave
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Location: Gambrills, MD
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Posted: 16 Jun 2020 at 5:17pm |
Also, make sure that the breather plug, on one side of the gearbox, is still breathing. If not, oil heats up, pressurizes, and leaks past seal... 
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Alvin M
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Joined: 24 Jun 2018
Location: PA
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Posted: 16 Jun 2020 at 4:46pm |
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There Should Be a O Ring Between The Over Running Jaw And The Brg
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garden_guy
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Location: Illinois
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Posted: 16 Jun 2020 at 4:43pm |
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Is the reason for that just due to excessive wear inside after all this time? I don't remember it leaking this bad 15 years ago, and I'm good about keeping the oil fresh and filled.
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Tracy Martin TN
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Location: Gallatin,TN
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Posted: 16 Jun 2020 at 3:53pm |
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You will never get it to stop leaking. The seal runs on the od of the splined drive line. The part that drives the gearbox from PTO.Got mine apart right now. The oil will seep between the splined shaft and the internal splined drive of over running clutch. HTH Tracy
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No greater gift than healthy grandkids!
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garden_guy
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Location: Illinois
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Posted: 16 Jun 2020 at 3:36pm |
Yeah I'll take some better pics of the leaks next time I am out. Does the housing just unbolt to get to the seals?
Fantastic mower. Does an amazing job, even with the blade being trashed on it for years now. Plenty of mower for the WD!
Also.... There's a vent/breather on this thing? Where would I look for that?
Edited by garden_guy - 16 Jun 2020 at 3:37pm
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TimNearFortWorth
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Posted: 16 Jun 2020 at 1:16pm |
That front is known to leak as they get older and I changed mine a few years ago, any bearing seal house should be able to set you up and I ran 80/90 along with good grease for a couple years before changing my front seal. Front cover and driveline may look daunting but it comes apart quickly, just watch that no parts go flying when you remove the ratchet assy. portion and leave the large tension nut where it is currently if it's been operating ok. Bottom seal on mine has never leaked and good to give that lower seal a shot of grease, seem to recall zirk fitting is at base towards rear.
FYI, good to check the breather fitting can breathe freely on that gear box as they will push oil out the front seal if plugged off. Mine was when I bought it and leak slowed at front seal after cleaning the vent fitting. Nice mower, mine is the 3-pt. version and one tough old gal.
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garden_guy
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Location: Illinois
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Posted: 16 Jun 2020 at 12:20pm |
Got the AC 160 mower out yesterday now that the ditch is somewhat drier here in IL. But man, I am getting a lot of oil leaking onto the deck from the gearbox... Any idea if I can replace the seals on this thing or what to do (or is corn head grease the way to go)?
It does a good job cutting -- but still ran into some mud!
Spent a good... hour out there down in the valley. Hit a log the size of my leg that had fallen in the winter; thankfully the rattle clutch still works good. Will have to get down there with the other tractor and chainsaw and move a few more downed trees.
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