Do interesting thing about the 14 bolt. Do you know why it doesn't need as much carrier bearing preload as say a Toyota?
CK5
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1982 C/K 6.0L Caitlyn Mall Crawler (Interior time)
- Thread starter Babaganoosh
- Start date
No clue. But I'll take a guess. Is it because the carrier bearings aren't carrying structural weight like the bearings in a semi-floating axle would be? I can immediately doubt this because Toyota also makes full floating axles.
So I'm back to having no idea.
Because of the pilot bearing on the pinion? Less pinion deflection?
Wyoming peeps spreading the knowledge lol.
At least that's what I have been told. Though I tend to crank em down still. Say 3 holes past where I set em at.
I tried to measure a difference on the carrier bearings but the scale I was using was not small enough. It was in 1/4 lb increments. So I tighten em down
I had that thought, as the third bearing is one of this axle's unique points. But I couldn't come up with a reason that they would be connected. How does pinion deflection affect carrier bearing preload?
Those were THE cb back in the day....
I have a theory but I don't know if I can get it in writing... If the pinion has less deflection the carrier doesn't have to be held in place so tight to keep the pinion from deflecting too much because the third bearing does that part?I had that thought, as the third bearing is one of this axle's unique points. But I couldn't come up with a reason that they would be connected. How does pinion deflection affect carrier bearing preload?
But a pinion deflects away from its ring gear, not towards it. So extra pinion deflection should just translate into less pushing on the ring gear, right? Pushing them slightly out of phase? There will be some side force on the ring gear that gets passed onto the carrier bearings. But that's a function of how hard the pinion is pushing on the ring. A supported pinion isn't applying less force onto the ring gear. If anything, it's applying slightly more force than what a deflecting pinion can deliver. This still isn't making sense to me yet.
Yeah so if the pinion moves X amount and the ring gear moves X amount away from the ring gear in a normal diff and in a 14 bolt the pinion doesn't move then there's that much more tolerance. I'm just wingin it here lol so I could be completely backwards! I do know that my bosses Cummins powered mud truck will twist the cage on the third bearing for some reason?But a pinion deflects away from its ring gear, not towards it. So extra pinion deflection should just translate into less pushing on the ring gear, right? Pushing them slightly out of phase? There will be some side force on the ring gear that gets passed onto the carrier bearings. But that's a function of how hard the pinion is pushing on the ring. A supported pinion isn't applying less force onto the ring gear. If anything, it's applying slightly more force than what a deflecting pinion can deliver. This still isn't making sense to me yet.
Hey we just hijacked a thread with tech campy.
No progress tonight, think I'll just spend money on parts I need and want.
This always makes me feel like I'm making progress.
It's only monday and I'm exhausted.
Me too. I was filling out a work order on the computer today and had it all screwed up so I put my head down in frustration and zonked out for a couple minutes. I didn't drool on anything so that's good I guess?
I came in looking like a zombie and left the same way.
I have almost half the drive train out of this truck hahha
You guys are ignoring the roll of gear oil in ring gear and pinion deflection.
I've been looking for the video all day but it shows the pinion deflecting away. You can't actually see it but something appears to be pushing the carrier sideways. It's amazing how much stuff actually moves.
I've been looking for the video all day but it shows the pinion deflecting away. You can't actually see it but something appears to be pushing the carrier sideways. It's amazing how much stuff actually moves.
Hey we just hijacked a thread with tech campy.
Mission accomplished.
Hijack or no hijack, I like mechanical things, and I like figuring out how they work.
Also the ring gear trys to pull the pinion gear towards it. That's why you get pinion marks on carriers with bad pinion bearings. Well not the reason why but one of em.
You have forces wanting to pull everything out of place. Hence as tight as possible without overtightening is advantagous
You have forces wanting to pull everything out of place. Hence as tight as possible without overtightening is advantagous
