Grease for my '50 D6 9U rollers...00 or what?

Square or hex head plugs indicate new style rollers with 30wt drive train oil. These can be refilled with a fill adapter on a pump. This is not supposed to be necessary for the "life" of the roller, but you can buy a tool to remove the plug and the filling tool that fills the roller to the correct level with oil before it runs out the plug hole. The plug is usually hard to get out, that's the reason for the tool.

The rollers and other fittings that have button heads take the 00 lube. In your case I would not buy a 30 pound bucket of lube just for the front idlers, instead you could use a ball and roller bearing grease you can purchase in tubes and use a standard grease gun with the button head coupler on the hose instead of the normal coupler. If you want to use 00, you can purchase 00 corn head grease in tubes from an ag equipment dealer or probably other sources.

Look up the fittings on the clutch if yours still has the dry clutch and make sure to get them all including the one for pilot bearing on the outside edge of the flywheel. Also check out the waterpump fitting, one to grease and one to vent the old grease.

Happy greasing!

i got my button fitting for my greese gun at napa for about 18.00 bucks,.........for my d7-3t😎

Caution with the button head fittings and using a grease gun on them. The hand grease gun puts out enough presure to blow out your seals on button head greased rollers and front idler bearings. As soon as pressure is starts to build while pumping with the grease gun on the button head fitting, stop pumping.😮