YM186D

[mark777]

That's a great looking rig...and you may want to consider hanging on to that finish mower too. They are a high dollar item around here, even one that is in less than average condition.

 

[alvanko]

I found 2 dealers (I'm sure there's more)that have a loader that will fit. They say it may need a little modification . I'm not sure how much . Hoye offers one and so does Len Sheafer. Both had prices with in $100 of each other. I'm not really convinced that they don't need a subframe. Neither dealer said it needed one. This is a Koyker brand loader. I'm sure I can fabricate a subframe but don't know if it is wise to do so. They're not that expensive , not cheep either . I would like to see a photo of your YM186 sometime. I'm thrilled to have found it.
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Mark777
I don't want to get rid of the mower but it will sit out side all year and rot away . I can't use the rear finish in my yard. I would like to see it go to a good home to someone who would take care of it and actually use it.It's probably worth $1000 new . Would like to get $500 for it. It kills me to see it sitting out in the back but I don't have anywhere to store it. Even the tractor sits outside under a tarp. I need a bigger garage!

 

[alvanko]

While I was out servicing my Mitsubishi today , I remembered servicing my YM186D. I did not find anywhere to grease the front axle pivot on the Yanmar . Is this sealed ? The manual does not show there is anywhere to grease. I find it hard to believe that this is a non wear area . Should it be disassembled and greased and reassembled ? Suggestions?

 

[Whiskey]

alvanko:

Look again, mine is not a 4x4 but there is a grease zerk in the shaft that mounts the front axel to the frame

 

[gbirky]

I believe all 4wd Yanmars have the pivot pin lubricated by the front axle fluid. The pin actually goes through the case at the front and back and is inside the axle housing in between.

 

[alvanko]

That would mean that there would be 2 "O"-rings keeping fluid in the housing . Also this wound mean that the front diff fluid would be high enough to reach the pivot point. I don't beleive this theory. I have been wrong many times and may be wrong again , but I don't see it.
I'll check the parts book to see if there is an o-ring listed.
I'm sure there is no zerk fitting (pretty sure) as I looked with a creeper and trouble light from the bottom and top.
Anyone else have any ideas?
Thanks!

 

[mark777]

Several of mine do not have a zerk. I carefully jack and block the tractor and FWD axle, remove the front wheels (less weight and better clearance). Grease generously and reassemble. If your careful when blocking up the tractor, you won't find it necessary to remove driveline from front differential.

I have not seen a pivot encased in, or lubricated with hydraulic fluid.

***edit*** I just went to Aarons website (HoyeTractor.com) at the top of the page... an barrowed the exploded view of a 1401D "4WD EXTERNAL". This detailed view shows everything on a model that should be very similar to your axle. I would look and hopefully it will answer all your questions about your front end.

Mark

 

[Skinman]

I've had my 186D for about 10 years. My parts manual shows a bushing and oil seal at the front and back of differential where the pin goes through. The service manual says nothing about greasing the bushings when assembling the differential. The diff. lube must sling or wick up there somehow. My seals are getting old and I can see evidence of lube leaking slightly around the mounting pin at front and back.

Skinman

 

[alvanko]

gbirky ,
I checked the parts manual and sure enough , it shows oil seals on both ends of the pivot pin and also a "plug" on the top of the housing (pipe plug). If I hadn't seen it I wouldn't belive it. I am not sure how this gets "splash" lubricated , but it must . You would have to pull the axle out to actually access the pipe plug .

 

[alvanko]

This of coarse brings up an other question.
I did go out and jack up the tractor to confirm there are no grease fittings and to feel around for the pipe plug shown' in the parts breakdown. I did not feel the pipe plug. I also do not see any type of vent. Doesn't this get warm under use and wouldn't the fluid expand a little? With out a vent , won't the presure push oil past a seal ?
Why no vent like used on the rear housing ?