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Username Post: gear contact patterns        (Topic#367474)
Senior Member
Posts: 275

Reg: 04-07-04
01-17-22 12:00 PM - Post#2834711    

Hello guys,

Please take a look below and let me know if you think this pattern is good to go.


Valued Contributor
Posts: 2555

Loc: Lake George, NY
Reg: 11-11-15
01-17-22 05:14 PM - Post#2834742    
    In response to 56chev66must

When checking the tooth contact pattern, did you put a load on the ring gear as you rotated the pinion flange?

Senior Member
Posts: 275

Reg: 04-07-04
01-17-22 07:32 PM - Post#2834750    
    In response to Shepherd


I think it's more accurate to say I put a load on both the ring gear and the pinion nut, that is to say I put a wrench on a ring bolt and a ratchet on the pinion nut and worked them both ways. But yeah.

Also, I looked at the pattern closely and made a command decision that the pinion was too close to the ring gear. I removed the pinion and bearing and changed the shim from .0365 to .032, rechecked and adjusted everything, and got these new patterns: How do they look?

"11th Year" Gold Supporting Member
Posts: 961
Loc: Canada
Reg: 11-01-04
01-21-22 10:36 PM - Post#2835019    
    In response to 56chev66must

Pictures on your second post don't display for me. For me, the first pattern looked pretty good. It will be nearly impossible to achieve a "perfect" pattern.

On new gears, focus on the drive side. On used gears, focus on the coast side.

-91 Sierra C2500, now K2500
-81 Chev K20

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