Gear pattern help, please!
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Gear pattern help, please! Could someone take a look at this pattern and tell me how far off I am and what I need to do to get it right. These are motive 3.23 gears. Also I am not sure on the backlash. I have the dial indicator but not sure if I am reading it correctly. When you are measuring backlash that is measured by how much the ring gear moves without the pinion moving? Or is that not right? Thanks.
Sorry for the crappy cell phone pics.
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Sorry for the crappy cell phone pics.
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TECH Addict
Joined: Jun 2009
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From: Tulsa, OK
And from the pics, your pinion depth is way off. Pull that carrier back out, and concentrate on the pinion for now. The contact should be in the middle of the tooth, not out at the end.
No one can eyeball how far off you are. You'll need the depth setting tools....Summit has 'em.
No one can eyeball how far off you are. You'll need the depth setting tools....Summit has 'em.
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Well I reused the shim that was on the old pinion and installed the carrier with just the spacers. That is the way the old ring & pinion was installed, so thought I would start there to just see how everything went back together and get a better feel for things. I know there is a pinion depth tool but have read that isn't real accurate. Isn't the pattern suppose to help get the right pinion depth? So the amount of backlash won't change the patten? Thanks.
Last edited by LeftySS; Apr 20, 2010 at 12:00 PM.
Thread Starter
Joined: Sep 2005
Posts: 741
Likes: 1
From: North Little Rock, Ar
And from the pics, your pinion depth is way off. Pull that carrier back out, and concentrate on the pinion for now. The contact should be in the middle of the tooth, not out at the end.
No one can eyeball how far off you are. You'll need the depth setting tools....Summit has 'em.
No one can eyeball how far off you are. You'll need the depth setting tools....Summit has 'em.
Thanks
Thread Starter
Joined: Sep 2005
Posts: 741
Likes: 1
From: North Little Rock, Ar
I just wish I knew what the factory used. The gears coming out are aftermarket gears and not sure what shim the factory used on the original gears. I am new to this, and correct me if I am wrong, but if the pattern is too much towards the heel wouldn't I need more shims to move it towards the middle of the tooth more?
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TECH Addict
Joined: Jun 2009
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From: Tulsa, OK
I just wish I knew what the factory used. The gears coming out are aftermarket gears and not sure what shim the factory used on the original gears. I am new to this, and correct me if I am wrong, but if the pattern is too much towards the heel wouldn't I need more shims to move it towards the middle of the tooth more?
Do you still have the original gears? If so, take the pinion to the press and get that bearing off so you can measure the shim.
Last edited by fleetmgr; Apr 20, 2010 at 02:44 PM.
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Verdad Gallardo Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
I don't have the factory gears but I did use the shim that came off the aftermarket pinion as a starting point. I will be adding more shims and checking again. will post more pictures with measurements as well.
Thanks
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Ok is this pattern looking any better? Backlash is about .008. It looks like the pattern is pretty well centered on the tooth but thought it might be too low? Would that be affected by backlash?
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[/IMG] Last edited by LeftySS; Apr 27, 2010 at 11:57 AM.
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Is this pattern ^^^ too low on the tooth? If so would I need more back lash to get the pattern to slide up on the tooth? It looks like it is pretty well centered just too low.
Thoughts?
Thoughts?
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Wow, great! So you think button it up right where it is then? I didn't think I would change much by going to .010 either but wanted to ask. Since I am not using new carrier bearings then I don't need to add the extra shim to the carrier for preload, right?
TECH Addict
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From: Tulsa, OK
Run with it. No preload on the carrier with used bearings. You do need a new crush sleeve for the pinion, though. Make sure you adjust that with the appropriate preload as well, which is different for new or used bearings.
Depth is too deep on both setups. It actually got worse on the 2nd pictures, my guess is you added shim to what was originally under the bearing. Go back to the stock shim and remove about .003" and make sure your backlash is set at around .008" to .010". As the 2nd pics show a wider pattern across the gear, wider does not mean it is right.
Jeff
Jeff
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Just so I understand. If I go back and remove shim from the stock shim won't that move the pattern more towards the heel? Don't you want the pattern to be in the middle of the tooth?
Jeff
Thread Starter
Joined: Sep 2005
Posts: 741
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From: North Little Rock, Ar
Ok, I guess I am not understanding how this works. Ha ha. First question, Does backlash change the pattern at all? If it does, doesn't it change the pattern from root to face? Doesn't pinion depth change the pattern from heel to toe?
Have you checked out our downloadable Installation Instructions? You might check them out here ........
http://www.jawsgear.com/Positraction.../tech_kits.php