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What ate my front u joints? Dana 44

Discussion in 'Differential & Driveline' started by AuroraGirl, Jun 15, 2020.

  1. Grit dog

    Grit dog Full Access Member

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    Not condescending, just think about what you're saying. The 2 "recommendations" you quoted above this, 1 I replied to above. The other was a response to your old unknown u joints, not new ones.
    Pumping grease in them frequently is also a cheap/easy way to blow the seals out for good. Actually you don't even want to see grease come out and once you do, stop. Old u joints, the grease passages can get plugged where not all the cups are getting grease when you add it. Sure if you're in that situation, try to ram some grease through them and hope it gets to all 4 cups. Otherwise, give it a pump or 2 every 10k miles, maybe, if you're actually putting on some real driving? And 2wd miles don't count with your lockouts.

    "Greasable options typically have recommended grease intervals for on-highway applications of 40,000-50,000 miles or corresponding to normal maintenance schedules." - From a machinery publication...

    So my friendly answer is I use either A. Whatever is in the grease gun. Or B. my preference is Lucas Red n tacky. Idk why. Maybe because it works. Probably like most grease.
     
  2. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

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    i think the every time use grease recommendation was for severe duty use like if i plowed as a profession or frequently mudded. i was thinking like before winter after winter maybe even just before winter, im also getting pins for my plow that take grease(but those arent sealed so they need it more often) so i was gonna have a grease gun with both functions kept with the truck and the theory on the passageway is another possibility, my one u joint is missing a cap and when i pull them out ill have to posth them up and see what it was age water rust etc
    in meantime im gonna make a d44 spindle cover because i took half assed sealed my extra axle when i stole the driveshaft last year and i want to take the hub locker and driveshaft out of driver side so i can do that one off-truck and just boom swap it in. the passenger ill have to take it off, do it, then put it back on

    Well i do have the half ton.. nah, I shouldnt.

    But on the subject does anyone know the name of the circular piece that has 2 prongs that i think push the gear away when you unlock the hub so they dont mesh and send power? if i can source one, i have 2 spare hub lock not counting my warns on half ton.
     
  3. bucket

    bucket Super Moderator Staff Member

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    There's different types of moly grease. The stuff I posted has done extremely well helping roller bearings live in industrial/farm equipment that tends to be extremely hard on bearings. Equipment like tub grinders, disc mowers and large square balers. Since I've got most everybody in the company using it, roller bearing failures do not happen as often now.
     
  4. Octane

    Octane Full Access Member

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    I used valvoline synthetic with moly on wheels bearings and suspension components.But not living in sub zero weather I dont remember how it was rated for that But for hundreds of thousands of miles on multiple vehicles I never had any issues with it.I've never used it on other types of machinery either
     
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  5. Snoots

    Snoots Supporting Member Supporting Member

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    Moog or Spicer

    Mobile 100 grease
     
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  6. Snoots

    Snoots Supporting Member Supporting Member

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  7. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

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    i feel like the type of moly is the kicker for wehter it would work in roll or needle bearings, if its too viscous i could see the concern, but viscosity could be overrun by load? Lik,e a heavy enough thing carrying it would probably push it past i would think because of forces pulling vs twisting. but in a low load or not load-bearing scenario i could see the concern esp if small?
    @bucket what does your company do again? make tire chalk?
     
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  8. bucket

    bucket Super Moderator Staff Member

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    Tire chalk?

    Planting, baling, spraying, biomass grinding and other stuff associated with that like minor/major repairs, fabrication and hauling.
     
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  9. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

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    So im basically right!
     
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  10. MrMarty51

    MrMarty51 Full Access Member

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    Reading all these posts about grease.
    Something else that might be amiss.
    When You installed the new u-joints and got them all pressed into the shaft and retainers installed.
    did You center them in the shafts ?
    More U-Joints gets destroyed because people dont know about centering them.
     
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  11. Octane

    Octane Full Access Member

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    And the joints are too tight and can hardly move is a common amateur install also. I recently replaced the u-joints in my 77 K10 front drive shaft rear drive shaft the old ones were original equipment and one joint had just a tiny bit of free play so I just replaced them all as they were 40 years old and then I had to replace the pinion seals also
     
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  12. Grit dog

    Grit dog Full Access Member

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    ^True story. Often need to move them until they free up and rotate smooth.
    But this thread wasn’t about eating up new u joints. It wa about old u joints that are.......old.
     
  13. Grit dog

    Grit dog Full Access Member

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    you could literally go into Autozone, find the grease department, cover your eyes and pick one off the shelf and there’s a 90% chance it will work for both applications....and wheel bearings too.
    Don’t overthink the “why”. You have been talking about replacing the u joints for months? It snowed 6” yesterday up where I’m from. I’d jam some u joints in that thing before you have to shovel the driveway!
     
    Last edited: Oct 25, 2020
  14. Octane

    Octane Full Access Member

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    If ur eating old joints dont improperly install new ones and eat them.My old joint was good for 40 years and I checked one 6 months and 1000 miles later and it was bad.
     
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  15. Grit dog

    Grit dog Full Access Member

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    Cam body or cam follower?
    I just googled it.
     

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