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Gear pattern check please! d44 14bff

nutt7

nutt7

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I replaced carrier bearings and pinion bearings/seals and added a powertrax no-slip to the 14 bolt. Everything else was replaced and setup as it was before. I may not have gotten enough load on the 14b, but I think the pattern still looks evident...:dunno:

d44 drive
DSC_5380-1.jpg

DSC_5390-1.jpg


d44 coast
DSC_5397-1.jpg

DSC_5392-1.jpg


14b drive
DSC_5401.jpg

DSC_5398.jpg


14b coast
DSC_5405.jpg

DSC_5412.jpg
 
ok, ive been waiting to see what others have said, but take this with a grain of salt, im no expert, just pulling from memory when I set mine up.

I think the d44 patern is ok for pinion depth but i think the ring gear could be closer to the pinion. you may need to swap 5-10 thousandths from the ring gear side to the non ring gear side. It just looks like the pinion is riding on the outside edge of the tooth, I think you generally want a little yellow edge on the drive side before the pattern so that the pinion gear is not hitting right on the edge.

the 14 bolt looks ok but the shinny part of the drive pattern seems to be pretty sharp, mine came out a little more faded at the edges, which just throws a flag for me but not sure why,:dunno:
 
Oh, I just noticed this, I think you have the d44 pics backwards drive vs coast?

which may negate anything I just said about the d44.
 
I think the d44 pics are in the right order. First two are drive, second two are coast. The less steep part of the tooth is the drive side, right?
 
well i guess your right considering its in the front and that is the side that makes contact when going forward, but when referencing a pattern chart it is considered the coast side. thats why your drive pictures of the 14 bolt are of the steeper side.
 
Thanks man. I can't tell still...someone said before that used gears can be tricky to read...the backlash is also on the lower end of the tolerance so I don't think I can move the ring gear closer. I might try and check the backlash again.
 
The 44 coast side is to far on the toe side and the drive looks good. The 14 bolt looks good. The coast side is toward the heel just a bit.
 
dangerdog said:
The 44 coast side is to far on the toe side and the drive looks good. The 14 bolt looks good. The coast side is toward the heel just a bit.
Click to expand...

Thanks for replying to both posts...think I should run them both? If I adjust to bring the coast side of the d44 towards the heel, will it mess up the drive side?

If it will be safe for the d44, I would prefer not to mess with it since I don't have the proper remover for the carrier bearings...the rental ones can't grab deep enough and they just wreck the cage.
 
86chevred1tun said:
You really need a dial indicator to verify your backlash
Click to expand...

I have one, and I just measured in 3 spots, they were all at 0.010. Apparently I measured it wrong the first time. I believe the spec is 0.005-0.008. Your initial diagnosis seems right. Any idea how much shim I should swap from the non-ring side to ring side? Is it weird that it is off now that I swapped bearings?
 
copyed from pirate tech build writeup for dana 60. but might be same for 10 bolt.

Backlash changes about 0.007” for every 0.010” the carrier is moved
 
I would start with a 3 or 5 thousandth shim. That should get you close to perfect. I'm sure worn bearing and one set of bearings to the next may vary a few thousandths
 
According to what's above, moving 5 thousandths on the carrier should land my backlash at 0.0065. I will try that and re-post a gear pattern.

Should I run the 14 bolt?
 
The 14 bolt backlash was right on, I forgot the number but it was very close to the middle of the spec.

For the resistance, I am not sure I got enough consistent resistance. It would be too easy to turn with the rag under there, or a piece of the rag would snag the ring gear tooth and get shredded. I think you can see some fuzzies in the d44 pics. I also tried leveraging the rag against the ring gear with a pry bar which seems to work ok but tough to do alone. Its tough recruiting friends to work in a garage thats 98 degrees...and thats only because I have a wall unit AC that I cart around on a moving dolly. Otherwise it would be 105.
 
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