Gear Tooth Pattern
04-15-2006 | 11:14 PM
#1
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Gear Tooth Pattern 
This pattern is telling me I need to put a thinner pinion shim in, correct. I started off with a .030", what should I try now? Is there a way to test it without ruining the crush sleeve everytime?
thanks
Andrew
04-16-2006 | 08:48 AM
#2
You should use a brake hone on a set of bearings so they slip fit on (for set up only). Always leave the seal and crush sleeve out until you find all the right shims. And use a die grinder and grind the crimped sections of the nut out so it threads on by hand. Set the pinion preload to the same inch pounds everytime you set it up.
You need to go thicker with the pinion shim.
You need to go thicker with the pinion shim.
Last edited by 8a8mfh; 04-16-2006 at 08:56 AM.
04-16-2006 | 08:54 AM
#3
I found this helpful.
PATTERN MOVEMENTS SUMMARIZED
(1) Decreasing backlash moves the ring gear closer to the pinion.
Drive pattern (convex side of gear) moves slightly lower and toward the toe.
Coast pattern (concave side of gear) moves lower and toward the toe.
(2) Increasing backlash moves the ring gear away from the pinion.
Drive pattern moves slightly higher and toward the heel.
Coast pattern moves higher and towards the heel.
(3) Thicker pinion position shim with the backlash constant moves the pinion closer to the ring gear.
Drive pattern moves deeper on the tooth (flank contact) and slightly toward the toe.
Coast pattern moves deeper on the tooth and toward the heel.
(4) Thinner pinion position shim with the backlash constant moves the pinion further from the ring gear.
Drive pattern moves toward the top of the tooth (face contact) and toward the heel.
Coast pattern moves toward the top of the tooth and slightly toward the toe.
(1) Decreasing backlash moves the ring gear closer to the pinion.
Drive pattern (convex side of gear) moves slightly lower and toward the toe.
Coast pattern (concave side of gear) moves lower and toward the toe.
(2) Increasing backlash moves the ring gear away from the pinion.
Drive pattern moves slightly higher and toward the heel.
Coast pattern moves higher and towards the heel.
(3) Thicker pinion position shim with the backlash constant moves the pinion closer to the ring gear.
Drive pattern moves deeper on the tooth (flank contact) and slightly toward the toe.
Coast pattern moves deeper on the tooth and toward the heel.
(4) Thinner pinion position shim with the backlash constant moves the pinion further from the ring gear.
Drive pattern moves toward the top of the tooth (face contact) and toward the heel.
Coast pattern moves toward the top of the tooth and slightly toward the toe.
04-16-2006 | 11:50 AM
#4
First, what kind on BL # do you have? What does it look like when you tighen it up?
Leave the crush coller out until you have your setup nailed, then install that along with the seal.
Leave the crush coller out until you have your setup nailed, then install that along with the seal.
Originally Posted by 1968nova
[img]
http://x402.putfile.com/4/10422593343.jpg[/img]
This pattern is telling me I need to put a thinner pinion shim in, correct. I started off with a .030", what should I try now? Is there a way to test it without ruining the crush sleeve everytime?
thanks
Andrew
http://x402.putfile.com/4/10422593343.jpg[/img]
This pattern is telling me I need to put a thinner pinion shim in, correct. I started off with a .030", what should I try now? Is there a way to test it without ruining the crush sleeve everytime?
thanks
Andrew
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04-17-2006 | 09:55 PM
#9
TECH Apprentice
Joined: Dec 2004
Posts: 393
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Originally Posted by 1968nova
when setting pinoin bearing preload, can you use a clicker type inch pound torque wrench? Or does it have to be a beam type?
thanks
Andrew
thanks
Andrew
