First off, let me apologize, I have lost my scanning abilities and my picture taking results are horrid. Maybe I will just bring you some copies if needed. But here is my best effort for conversation. This is out of an I&T manual that covers the YM330, the closest US sold to your 3110D, just talking about four wheel drive and engine, not power shift, pto, bla, bla, bla. Pretty sure the four wheel drive here will be real close to your set up.
The manual is pretty plain about the setting you are talking about. Here is the last sentence of instructions: Reinstall axle as described in paragraph 5, selecting correct thickness of thrust washers (56 and 70) which will limit end play of axle to less than .0079" without binding.
Doesn't appear complicated. Wouldn't be loosing any fluids in the process. Not opening up the 4 wheel drive.
In other words, Yanmar says maximum 8 thousands, not a quarter of an inch. Paragraph 5 mentioned above states spacers 56 and 70 come in 2, 2.3 and 2.6 mm thickness which would interpret to .0787, .090, .102". I would even wonder if these are available. Hoye lists a whole bunch of shims, I have no part number but they would. Might have to fabricate or have some fabricated. Rattled long enough.
