Gear pattern check, Isle 8 please!!!

[redmist]

Working on an 8 3/4   3.91 gears

Backlash is at .009


Drive side:






Coast:

[femtnmax]

They look like NEW gears, correct??    For old gears use the coast side of the pattern.
The drive side pattern looks too deep, meaning too close to the inner diameter of the ring gear if I'm explaining clearly...to say another way the pinion is too deep into the ring gear 'front to back'.  Move the pinion gear forward, away from the ring gear, toward the drive shaft so to speak.  The pattern does look correctly located half way between root to tip of teeth, so the ring gear carrier is correctly located 'side to side', but will need to be checked again when the pinion is relocated.

Is this a 742 case with the shims??   I like them the best because everything is shim adjustable.
One lesson I learned is to buy TWO of the rear (larger) pinion bearings (the roller part of the bearing, not the "cup".   Then use a flapper wheel to sand the I.D. of one of the bearing roller casing.  This way the bearing roller can be easily slipped on/off the pinion gear.  This makes setting the pinion depth/changing shims much easier.  IE for setting pinion for/aft depth....which is where your gearset needs further adjustment.  
The first time I did a gearset, had only one bearing,and pressing the bearing on/off the pinion gear could stretch the bearing roller cage, then the bearing would have to be discarded.

Notice that the coast side pattern is also too deep 'front to back'.

Remember to check the backlash too after each depth adjustment, IE the amount the ring gear rotates freely vs the pinion gear.  Sorry if I'm over explaining.

I have done several gearsets, both used and new, and with a little time and patience I have been able to achieve 'perfect' patterns, even when some earlier opinions said 'it was close enough'.    I have not had any noise or issues with my gearsets when done.  

Your work looks good so far, you are close and nearly there.  Keep at it.  

I have a bunch of notes for setting teeth patterns.  I can look for them, or do your own internet search.  There is alot of good info out there, thats where I found all my info.