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Top of Pinion to Bearing Bore Measurement

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bridunc Silver Member Brian Duncan
Indianapolis, IN, USA   USA
I pulled the gear carrier out of the axle to inspect it. I did not have noise or issues with it, It just seemed prudent since the axle was out of the car already. The gears look very good for 80K+ miles.

I decided to go deeper and pull the carrier and pinion because i did not like the "looseness" of the rear pinion bearings. Unfortunately, I did not measure it prior to disassembly.

The carrier bearings were tight in their bores and the spider gears had little to no slop.

Upon pulling the pinion out of the gear carrier, I found that one of the three outer bearing shims was broken. All three shims measured .005 each. I have read in old posts that these shims are often found broken or cracked.

I am following the Bentley Manual for reassembly. The instructions are fair at best for detail. It does require specialized tools that I do not have, particularly tool 18G191B. This tool measures the distance between the top of the pinion and the carrier bearing bore after being calibrated on a stepped block. Step "C" is the required calibration distance.

Does anyone know the calibrated distance for step "C" or the distance between the top of the pinion gear and the bottom of the carrier bearing bore?

I did not change the pinion bearing washer or the thrust bearings so the distance should not have changed....I just want to know what it is to verify what I have.

Thanks,

Brian

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petnatcar Silver Member Peter Carbone
Watertown, NY, USA   USA
Brian,
Here's a few pages from the Workshop Manual.

Maybe you can glean some info from all of this.

Send me a PM if you need better copies of these pages.

Good luck,
Peter



Edited 1 time(s). Last edit at 2019-02-11 05:53 AM by petnatcar.


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bridunc Silver Member Brian Duncan
Indianapolis, IN, USA   USA
Thank you Peter,

I have the Workshop Manual. Am I missing the dimension somewhere in the text?

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petnatcar Avatar
petnatcar Silver Member Peter Carbone
Watertown, NY, USA   USA
That's a good question.
I thought it was listed in the description but I'm not that familiar with the differential
so maybe someone else can fill in the blanks.



Edited 2 time(s). Last edit at 2019-02-11 12:35 PM by petnatcar.

robolab Walter Wuller
Muenster, Germany   DEU
I hope the attached file can help.

Gerd


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The Austin Healey Rear End.pdf    69.4 KB

bridunc Silver Member Brian Duncan
Indianapolis, IN, USA   USA
Gerd,

This is exactly what I needed.

Thank you!

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