9" pinion question - Printable Version

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9" pinion question - Printable Version

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9" pinion question - scbronco - 01-02-2011

so, anybody got any bright ideas on how to get the bearing races out of the pinion retainer on the 9"

i dont have a press or a bearing removal tool. just a hammer, and a boat load of scrap metal... Confused

upergrin:

9" pinion question - blazinchuck - 01-02-2011

you just wanna remove to the races? i would use a alum drift,alum rod,brass in either, if none of those are available...just use a tapered punch(long) if ya have that

if all else fails or dont exsist...long screw driver as a punch lol

9" pinion question - scbronco - 01-02-2011

yeah tried that already, they didnt budge... they are so close to each other, i cant get a good angle on em'... bout to buy a 3 jaw puller i guess...

9" pinion question - blazinchuck - 01-02-2011

can ya post a pic?

9" pinion question - scbronco - 01-04-2011

i got it!!! used the old torque it on with the pinion yoke/nut method... Confused

upergrin:

9" pinion question - scbronco - 01-05-2011

ok, i got the pinion and retainer reassembled, and started setup tonight. pinion depth is bang on at 1.007", and the backlash is at 0.007". back lash is a little tight, about .001"-.003" out of spec, depending on the source of the specification..., but it improved the pattern.

[Image: 100_2388.jpg]

9" pinion question - broncosbybart - 01-05-2011

Patern looks good. Backlash IS tight. I don't have enough experience to tell you if it is too tight though. How are you measuring pinion depth? Just curious.

9" pinion question - scbronco - 01-05-2011

broncosbybart Wrote:Patern looks good. Backlash IS tight. I don't have enough experience to tell you if it is too tight though. How are you measuring pinion depth? Just curious.

well its complicated...first i measured the diameter of the carrier bearing race with a digital caliper (2.886"), then divided by 2 to find axle centerline in the bearing (1.443")

then using the depth stick on my caliper, i measured the depth of the carrier bearing seats (1.460"). this info told me the carrier cap mounting surface was 0.017" taller than the axle centerline (1.460-1.443=0.017)

so using the carrier cap mounting surface as my measuring point i lay a straight edge across them and measured from the straight edge to the pinion face. each measurement on the caliper would then have the thickness of the straight edge (1.010"), and the 0.017" from above subtracted yeilding the pinion distance from axle centerline.

due to the complication of all that, i measured everything 3 times a peice, and wrote down each and every measurement. it sucked but i can do math better than i can buy specialty tools for one time use... Confused

upergrin:

upergrin:

i edited the wording in the first post about the backlash, i realized it looked like the backlash is .001"-.003". the backlash is .007" which is just .001-.003 out of spec, depending on the source of the specification...

9" pinion question - blazinchuck - 01-07-2011

looks good to me Nick, but this is the back lash right?? with a 9"...you have the side adjusters to change that. if it says .008-.011 or whatever...i would try to get in that range, it will run cooler and be less noisy. BL should be super easy on a 9" and 14blt...they are adjustable,HTH

9" pinion question - scbronco - 01-07-2011

cool, thanks chuck, i dialed it out to .009". some say .007-.010, others say .010-.016... depending on if its aftermarket or OEM R&P. mine are obviously aftermarket, so i went with the .007-.010 range. pattern didnt change though...