M4500DT what's under here?

[AusM4500dt]

I have a few things I'm trying to identify that the manuals haven't been much help with - does anyone know what's under these?

#1 (A & B) : hatch above righthand step, label is mostly illegible but seems to say something about lubrication so I'm thinking it's something important

#2 : this is just about directly underneath the steering wheel, pretty sure there's not supposed to be a split pin through a hole in the case leaking oil - any ideas what might be inside here? The head cover gasket looks pretty done in, we're replacing that - but also doesn't look really like it should be leaking into here so wondering if there's another separate issue

#3 : random plug under the seat - not mentioned in service manual that I can see, no idea what it's for

 

[JohnDB]

I have a few things I'm trying to identify that the manuals haven't been much help with - does anyone know what's under these?

#1 (A & B) : hatch above righthand step, label is mostly illegible but seems to say something about lubrication so I'm thinking it's something important

#2 : this is just about directly underneath the steering wheel, pretty sure there's not supposed to be a split pin through a hole in the case leaking oil - any ideas what might be inside here? The head cover gasket looks pretty done in, we're replacing that - but also doesn't look really like it should be leaking into here so wondering if there's another separate issue

#3 : random plug under the seat - not mentioned in service manual that I can see, no idea what it's for

#1 remove to grease the clutch release bearing.
#2 yes that's a genuine Kubota split pin and its supposed to be there. To allow anything in the clutch cavity above to drain out, like if a crankshaft seal or gearbox input shaft seal started leaking, thats your indicator.
#3 adjusting the 3 pt hitch feedback rod. See page S 7-1 of the manual.

 

[Russell King]

#1 remove to grease the clutch release bearing.

To be 100% clear, there is a throw out bearing on a carrier sleeve behind the cover. There is a grease point on the carrier. The grease you put into that Zerk will grease between a shaft and the bearing carrier that slides as you push the clutch. The bearing is probably a double sealed bearing that cannot be (easily) greased.

You can probably buy a new label or see a picture of the label on Messicks or Coleman site. It limits how many pumps of grease you put there (probably 2-3 pumps of a hand driven grease gun) so it doesn’t get all over the clutch and pressure plate.

@JohnDB sorry to be clarifying your post but I just didn’t want people thinking it would grease the actual bearing when it doesn’t get there.

 

[GeoHorn]

That split pin keeps the hole from plugging up with junk and debris by “jiggling” itself during ordinary operation.

 

[JohnDB]

To be 100% clear, there is a throw out bearing on a carrier sleeve behind the cover. There is a grease point on the carrier. The grease you put into that Zerk will grease between a shaft and the bearing carrier that slides as you push the clutch. The bearing is probably a double sealed bearing that cannot be (easily) greased.

@JohnDB sorry to be clarifying your post but I just didn’t want people thinking it would grease the actual bearing when it doesn’t get there.

Thanks for clarifying that Russell, good point.