Is this pattern any good?
Thread Starter
Teching In
Joined: Jun 2015
Posts: 14
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From: Sweden
old bearings that had been grinded for easy removal.
As it turned out the new bearing had a diffrent pattern.
Hard lesson learned.
Thanks for your honesty.
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
I've never experienced what you're describing and I've used setup bearings since the very first rear end I've ever built. I don't understand why your pattern changed unless the bearing is physically no good. I do notice that going from a used bearing to a new one brings backlash in .001 but that's it. I generally setup tight so I shoot for 7 or 8, and the new bearing tightens it 1 so Im on the tight side of acceptable, but I do that on purpose.
When I did mine I set it up with a opened up used pinion bearing and my pattern also changed some when I did the final install with new bearings. It was a small change though but I learned next time I'll use a new bearing for set up.
Thread Starter
Teching In
Joined: Jun 2015
Posts: 14
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From: Sweden
Fifth time.. Shims: 0.027
Backlash: 0.007
0.027 is the original shim so it would seem like the new pinion bearing made the backlash decrease (from 0.010 to 0.007).
But still not good.
-Shall try with 0.010 backlash, just to see what happens.
Backlash: 0.007
0.027 is the original shim so it would seem like the new pinion bearing made the backlash decrease (from 0.010 to 0.007).
But still not good.
-Shall try with 0.010 backlash, just to see what happens.
Last edited by alvess; Jul 22, 2015 at 04:32 AM.
Thread Starter
Teching In
Joined: Jun 2015
Posts: 14
Likes: 0
From: Sweden
Ninth time Think i get it know, found this guide: http://www.pirate4x4.com/tech/billav...4b_Gear_Setup/
Learned that both the backlash and the pinion depth needs to be in the ballpark otherwise nothing makes any sense.
Now have:
shims: 0.020
backlash: 0.010
and it starts to look good:
Learned that both the backlash and the pinion depth needs to be in the ballpark otherwise nothing makes any sense.
Now have:
shims: 0.020
backlash: 0.010
and it starts to look good:
Thread Starter
Teching In
Joined: Jun 2015
Posts: 14
Likes: 0
From: Sweden
Finaly.. Had it apart 12 times, must be a record.
The only guide that worked for me was this one:
( credit to http://www.pirate4x4.com )
And below picture is showing, as good as it get's with these parts.
Put in the drive axels and tighten the parking brake to get a clear pattern.
The drive side looks a little bit strange, contact all over the tooth.
(install depth 3.785, measured with a vernier caliper)
- Almost silent, very tired of pinions and ring gears but happy with the result.
Thanks for all the help and support!
If i ever do it again it will be with two new pinion bearings, one grinded and one for final assembly.
And with gears from a well known manufacturer.
Starting with measuring the pinion depth, so it gets in the right ballpark before checking with paint.
/alvess
The only guide that worked for me was this one:
( credit to http://www.pirate4x4.com )
And below picture is showing, as good as it get's with these parts.
Put in the drive axels and tighten the parking brake to get a clear pattern.
The drive side looks a little bit strange, contact all over the tooth.
(install depth 3.785, measured with a vernier caliper)
- Almost silent, very tired of pinions and ring gears but happy with the result.
Thanks for all the help and support!
If i ever do it again it will be with two new pinion bearings, one grinded and one for final assembly.
And with gears from a well known manufacturer.
Starting with measuring the pinion depth, so it gets in the right ballpark before checking with paint.
/alvess
Last edited by alvess; Jul 24, 2015 at 11:18 AM.
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