Knockout kit

[Doc Harley]

I believe the winder uses a dry sump oiling system. I only saw a oil film when mine was apart. But I'm sure smarter guys then me will chime in.

Yes, I too saw what appeared to be an 1/8 of a teaspoon (or less) of oil in there.
Fatchance , that is without a knockout kit. So even though it's dry sump, oil must run past the crank bearing that's sitting right, in plain site and down the crankshaft and into hub.
Naw...the crankshaft seal is there.

 

[fatchance]

Would it not be all or nothing? Either the oil is going to push through and fill to the point where it has a chance to drain back or there shouldn't be any at all. Again explain what i'm missing here?

 

[Doc Harley]

Would it not be all or nothing? Either the oil is going to push through and fill to the point where it has a chance to drain back or there shouldn't be any at all. Again explain what i'm missing here?

Yeah, its going to take someone smarter. But when I turned my hub and looked inside, I saw the smallest bit of oil in the hub. Its noT even worth mentioning.
Maybe I sprayed my splines with something along the way. I've only had my snubshaft out once.

 

[1nc 2000]

Damn not trying to startle people. Just passing on information from a phone conversation.
I am going to take the chance and see if it will fit in my nytro.

 

[KnappAttack]

Nooo!!! Haha. I did the same. Let me give a call to Tapp on Monday and see why, the world's leading clutch company for the 998t would include a specified amount of Grease for the ability to grease it twice, and yet not include that in their very specific instructions. (Long sentence)
While I agree it was a lot. There is a void inside the hub where all the extra grease gets pushed, obviously opposite of the seal.
Either call them yourself or trust my words. I make a solid bet Tapp will thinks it's ok, either way. Meaning no damage will be done.

Find out what type of grease it is too then and let us know. I want to know if its something special or just hi-temp grease of some sort. I've got some hi-temp grease here that is thick and red as well.

Doesn't seem like much grease honestly, especially to do it twice. I was going to install the whole pack of grease. O-ring and collar is supposed to hold it all in anyway right.... Should be able to pack it full and it should last longer IMO. Wont know till we try it I guess, but now has me wondering. I didn't think they even sent enough grease for one fill myself by looking at it. I want to see it fill the whole space up so it lasts.

 

[fatchance]

Anybody know if there's a journal under that crank bearing allowing the oil to run out of this cavity where the stub shaft lives?

 

[fatchance]

I put the whole package in and installed then removed the stub shaft to check for coverage. I saw no issues with the whole package in the female end of the stub shaft.

So if the splines were full of grease where did the volume of grease go once the splines met? I intended to to open it up after the install to get some answers, but the kit hasn't arrived yet.

 

[KnappAttack]

So if the splines were full of grease where did the volume of grease go once the splines met? I intended to to open it up after the install to get some answers, but the kit hasn't arrived yet.

There is a whole cavity in the end of the stub. Hopefully the o-ring holds the grease in for many miles, otherwise its really wasted effort.

 

[fatchance]

There is a whole cavity in the end of the stub. Hopefully the o-ring holds the grease in for many miles, otherwise its really wasted effort.

Exactly and the only thing I have to go on is the one pic of the Stub. Like I said Mike if oil is getting into that cavity what's stopping it from dissolving the grease on the spline? I guess I have more questions than answers until I get it apart and see it for myself.

 

[Turboflash]

Anybody know if there's a journal under that crank bearing allowing the oil to run out of this cavity where the stub shaft lives?

The 998 is a "dry sump" system but that doesn't mean there is no oil where the crank lives. That's why, if one changes the oil correctly, you remove that bolt in the bottom of the crankcase and a small amount of oil will drain out.
Yes. There is some oil flying around in the crankcase that splashes into that ball bearing next to the PTO main bearing. That ball bearing that supports the PTO stub does not have pressurized oiling. Splash lubrication. The main bearing right next to that ball bearing does have pressurized oiling. As oil exits that main bearing (and others), some of it splashes to lubricate the ball bearing. And, some of the oil does get into splines which is why when you pull it out, there is oil on it.
So, the question remains, how long will that grease stay in the splines. Yes, there's a seal but that seal is not perfect at keeping oil out. Time will tell.

 

[fatchance]

The 998 is a "dry sump" system but that doesn't mean there is no oil where the crank lives. That's why, if one changes the oil correctly, you remove that bolt in the bottom of the crankcase and a small amount of oil will drain out.
Yes. There is some oil flying around in the crankcase that splashes into that ball bearing next to the PTO main bearing. That ball bearing that supports the PTO stub does not have pressurized oiling. Splash lubrication. The main bearing right next to that ball bearing does have pressurized oiling. As oil exits that main bearing (and others), some of it splashes to lubricate the ball bearing. And, some of the oil does get into splines which is why when you pull it out, there is oil on it.
So, the question remains, how long will that grease stay in the splines. Yes, there's a seal but that seal is not perfect at keeping oil out. Time will tell.

Completely understand and 100% agree. this is definitely going to be a time will tell fix! Can you confirm if there is a journal under that bearing?

 

[Turboflash]

Personally, I think it will be just like the old days of silencer packing where you ran it until it started to sound loud, then you re-packed.

 

[fatchance]

It's obvious from the pic that there is plenty of room for that grease to leave the spline. Question is if there is oil present there? if not pack the whole darn cavity!

 

[Doc Harley]

Good to know I guess I'm taking mine apart again to remove some grease.

I knew you wouldn't need to pull that apart again....happy trails!!!

 

[REDLINE 1]

I would think you would want it completely full but if you put too much it would either squeeze out around the internal o ring or hydraulic the steel ring out as you were tightening it down on assembly