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Old 05-11-2005, 03:02 PM   #1 (permalink)
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D60 Pinion Preload Question......

Okay, got the rear end sorted out.....now I have to work on the front.

D60 LP with 5.86 spicers and an ARB......

The pinion depth is fine, but the preload is less than what it should be (spec is 17-30 in-lbs).

So, the question is: is there a way to change the pinion preload without changing the pinion depth?

I don't really understand setting up diffs yet, so bear with me:

Could I just remove a few thou. of shims from the smaller bearing on the pinion (the one nearest to the pinion yoke) without removing any from the other bearing to tighten the preload without changing the pinion's depth?

Thanks in advance.

Sean
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Old 05-11-2005, 03:09 PM   #2 (permalink)
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Quote:
Originally Posted by Sean
Okay, got the rear end sorted out.....now I have to work on the front.

D60 LP with 5.86 spicers and an ARB......

The pinion depth is fine, but the preload is less than what it should be (spec is 17-30 in-lbs).

So, the question is: is there a way to change the pinion preload without changing the pinion depth?

I don't really understand setting up diffs yet, so bear with me:

Could I just remove a few thou. of shims from the smaller bearing on the pinion (the one nearest to the pinion yoke) without removing any from the other bearing to tighten the preload without changing the pinion's depth?

Thanks in advance.

Sean
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Old 05-11-2005, 03:20 PM   #3 (permalink)
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It'll change a little, but it shouldn't be enough to throw the pattern/backlash off. Question is, why the fawk didn't you just do it and re-check your pattern??
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Old 05-11-2005, 03:34 PM   #4 (permalink)
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Well, the problem was that I didn't do it. I had a friend set both axles up and he didn't use a torque wrench on ANYTHING. We had a problem with the rear b/c I noticed a gap between the spool and the ring gear and he just said, "Throw a washer under the gear; the bolts are too long." So, when I did that, (in the "Check This Gear Pattern Please" thread) the backlash was WAY too far out of spec at .022" once the washers allowed the ring gear to get sucked all the way onto the spool. So I had to re-do it.

After getting that completely reworked, I decided I better check the front. The backlash in front is set at about .003" so it's too tight. So, I decided I better check the pinion preload and it seemed a little loose. I checked it with an in-lbs torque wrench (but it's a click style so I'm not sure it's valid) and it didn't even register at 17 in-lbs. That leads us to my question about how to change preload without changing depth.

BTW, anyone know where to pick up a beam style in-lbs. torque wrench?? I'm not having any luck at Autozone.com or Crapsman.

Sean
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Old 05-11-2005, 03:46 PM   #5 (permalink)
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Quote:
Originally Posted by Sean
"Throw a washer under the gear; the bolts are too long."


Quote:
Originally Posted by Sean
BTW, anyone know where to pick up a beam style in-lbs. torque wrench?? I'm not having any luck at Autozone.com or Crapsman.
I can't find one either. went by hand. tighten it slowly. spin it and as soon as it just starts to get harder, then thats it. or you could just stick a 17" bar thru the yoke and hang a 1 lb weight on it(=17 in lbs)and see if it turns or no.
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Old 05-11-2005, 04:25 PM   #6 (permalink)
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Ya, I thought the same thing. I called Strange Engineering (maker of the spool) and they recommended the same thing. Poor excuse for mis-engineering their spool IMO, but I'm stuck with it so I don't have much choice other than grinding the bolts down (which was too time consuming and the heat from grinding might weaken the bolt).

Thanks for the tip on the 17" bar and 1 lb. weight......someone at work recommended the same thing. Might be worth trying.

Sean
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Old 05-11-2005, 05:49 PM   #7 (permalink)
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I got my inch/lb. torque wrench from Randy's
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Old 05-11-2005, 06:15 PM   #8 (permalink)
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Sean---this is what you want...

http://www.lickbike.com/productpage.asp?PART_NUM_SUB='2608-00'

or better yet http://www.performancebike.com/shop/...tegory_ID=4219
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Old 05-11-2005, 06:52 PM   #9 (permalink)
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Originally Posted by ZUK
Sean---this is what you want...

http://www.lickbike.com/productpage.asp?PART_NUM_SUB='2608-00'

or better yet http://www.performancebike.com/shop/...tegory_ID=4219
Thanks for the link, I`ve been looking for an in./lb. torque wrench also.
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Old 05-11-2005, 06:56 PM   #10 (permalink)
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I picked up a 0-30in*lb dial type Snap-On torque wrench for under $50 on ebay. It looked like it had been used twice...
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Old 05-11-2005, 07:01 PM   #11 (permalink)
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Quote:
Originally Posted by CrustyJeep
It'll change a little
Pinion depth will not change by adjusting pinion preload.

Proper pinion preload should be checked with the carrier removed.

Dan
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Old 05-11-2005, 07:04 PM   #12 (permalink)
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Thanks for the tip, Dan. I'll give it a shot.
***EDIT*** And to you too ZUK for the link to the beam style Tq. wrench. I appreciate it.

Thanks guys.

Sean
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Last edited by Sean; 05-11-2005 at 07:19 PM.
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Old 05-12-2005, 09:32 AM   #13 (permalink)
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Quote:
Originally Posted by ZUK
Sean---this is what you want...

http://www.lickbike.com/productpage.asp?PART_NUM_SUB='2608-00'

or better yet http://www.performancebike.com/shop/...tegory_ID=4219
Just an FYI, the torque wrench you listed is for 0-600 inch lbs. and is not in 1 lb. increments.

If you order item # 40-0666A, it's cheaper @ $31.99 and is 0-60 in-lbs and is in 1 lb. increments.

HTH,
Sean
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