Gearbox pinion shaft bearing replacement...

[Fred Munro]

Eric;

This is the traditional method used to set up differential pinion/ring
gears. You paint machinists blue on one gear, assemble it, and turn the
gears. You are looking for the contact patch right in the centre of the ring
gear teeth. Shims are used as required to get the contact patch where you
want it. Some of the old (I'm thinking 1950's) Motor manuals had a write-up
on this procedure - I first came across it looking through some of the old
manuals.

Fred Munro


-----Original Message-----
From: quattro-bounces at audifans.com
[mailto:quattro-bounces at audifans.com]On Behalf Of Eric Sanborn
Sent: August 4, 2004 6:56 AM
To: Jim Dupree
Cc: Audi Quattro
Subject: Re: Gearbox pinion shaft bearing replacement...


Jim Dupree wrote:

>The tools to measure
>the back lash can be improvised but I don't know how one would improvise
the
>pinion depth measurement tools.
>
>
The company I work for has a sister plant in Germany that makes spiral
bevel and helical gearboxes.  Our guys in the shop occationally do
repair work on the units.  They use a marking grease to see the
engagement depth.  You paint it on one side and then run the gears
against each other by hand.  Then you look at the pattern the grease
makes and review the charts to you can tell which direction things need
to be shimmed.  This is done in connnection with measuring backlash.

Jim do you think this would work for us shade tree guys with less equipment?

--
Eric Sanborn
'85 4ktq

http://sofadog.net/4ktq/

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