Re: Danuser F8 post hole digger seals

[shaun wallace]

Then mine must be over filled. When put seals and brgs I used 4- 1 pound white lithium grease, 2 tubes JD corn head grease and 2 pourable grease from TSC.

 

[caterpillar guy]

I'd probably still use a synthetic either 85-140 or something like it. The extreme pressure additives they have now are better and will hold up in there. In my semi they use 50wt oil in the transmission for lubrication. Yes it does not have a constant load like a posthole digger does when in the ground. I still think it would work fine.

 

[XYooper906]

The extreme pressure additives they have now are better and will hold up in there.

Curious to know what you mean by better? Better than the recommended grease, or better than conventional gear oil used to be? It's probable that gear oil would lubricate everything just fine. My concern would be the increased possibility of leakage, and the possibility of running it low if it does leak out under use, or even just sitting between uses. Without a dipstick, human nature may lead you to assume it's good. (On the other hand a significant leak would pretty much compel you to check/add oil prior to each use.)

I do plan to install some Speedi-sleeves on the yoke and main shaft sealing surfaces to ensure a good sealing surface.

 

[caterpillar guy]

So what is the problem? No2 EP grease will tend to track or make a groove in it, and not melt enough to lubricate things in a gear box like a posthole digger. I would want something that can flow some so it stays in the bearings and gears. Either by thinning with 80/90 or by getting a track roller grease. Even cornhead grease would work better. We used to 40and more years ago thing gun grease with 80/90 for greasing the track rollers on the Cats. Regular grease would not pump good in cold weather and oil would not stay in. So the obvious thing was to thin the gun grease to a semi flowable consistency it wouls stay in and still pump.

 

[Jim.ME]

In the post you first tagged on to about this Case Nutty 1660 (a well-respected member here for years) said he sold them for 30 years and they used corn head grease, not oil. You later posted info you got from the Danuser site that said use an EP2 grease. The semi fluid brown grease you found in your gearbox when you opened may have been #0 corn head grease, so somewhere between the two grades (0 to 2) and it should work fine. Oil and grease questions will get you many varying answers, I doubt you will ever get everyone to say this one is the only one to use. In the end you need to choose what you are going to use.

Info at the attached link may help you understand the NLGI numbers.

https://components.atcgroup.ie/news/grease-use-lubrication-nlgi-numbers-explained/

This is another case where the two view formats come into play. Those who are using Classic do not see the old post you first tagged onto when you started this, they only see you post you made to it and your post and responses to it show up as "RE:" responses in Classic, not the whole thread. Better to start a new post in such cases and include a link to the old thread, if you want to reference it, then it is to make a post on the old thread.


Link to the original post:
https://forums.yesterdaystractors.com/viewtopic.php?t=1425079

 

[XYooper906]

Thanks Jim, I am familiar with NLGI numbers, and when I read "EP2" recommended by Danuser, I automatically assumed #2 grease. Then when I read the Shell Gadus S2 V220 2 spec sheet, it confused me and had me thinking all the NLGI grades listed on the sheet would have the "2" in the name, and the NLGI # listed separately.

In the case of "cornhead grease", I am only recently acquainted with that term, so searching info about it had me only finding 0 and 00 grades, further adding to my confusion. So I was asking CaseNutty for some clarification as to what was in these things from the factory.

And caterpillar guy, my instincts also tell me that packing that gearbox with #2 grease would not allow proper flow of lubricant, so I understand that you recommend a thinner grease, or thinning the #2 grease with some gear oil. I appreciate all the help and I am not questioning your expertise(s). I just want to do this job once, and not have any headaches down the road.

Sorry for the cumbersome post, this forum is unlike no other that I'm familiar with, so I thought everyone associated with it in the past would see any new posts.

 

[Jim.ME]

Find the manufacturer's Product Data Sheet (Technical Data Sheet) for products, like grease, you are interested in and you can see if it is available in multiple grades. A store's advertising info online is generally for the one item and often doesn't tell the whole story.

You can't depend on people who posted in old threads responding to a question. Case Nutty stopped posting here, by choice, quite a while ago. Many of us here are getting a few years behind us. Sometimes people who responded in an old post have passed on, literally or figuratively. Best to make your own new post with all your info and see what you get for responses. Use a clickable link to an old post, if it has info you want to be seen and discuss, don't tag a post on to it.

 

[caterpillar guy]

What I mean is that oils have improved over the years and one of the things is that they have added the extreme pressure or EP to oils and greases more so than they used to be most were just viscosity for many years and would not take the pressures of some of the more and higher pressures that they demand of oils now and with the synthetics available you can get some pretty high pressure oils for various jobs. If you don't like the 85-140 oil for this or are worried about leakage why not put a check plug in the side where the correct level is or use a wire to mark the level on the outside for this box then you could just put the wire in and compare to the mark on the side each use. After all if it sets for several months or a year between uses it should be checked just to make sure it is not full of water from that leakage at a gasket or seal. And don't be surprised if it does get some water in it over time from condensation even just setting around. A vent would let it escape with use in hot weather if not a lot.

 

[Jim.ME]

Your choice oil or grease. You have the Danuser recommendation and a good bit of info in the two posts you have going about this. 00 or 0 grade corn head grease will be less likely to leak out than gear oil.