Hi Barry,
Where did you find the 4.1 R & P?
The pinion head bearing (factory PN# 100897) was Timken cup 3120, but the
inner race was 3188-S. The "S" denotes a modification from normal. The OD
of the pinion shaft was a size that required a slightly oversize ID in the
brg. This is the most important brg. in a TR diff. setup.
TR Regards,
Hardy
In a message dated 7/11/2011 3:58:57 P.M. Pacific Daylight Time,
barry@penybryn.ca writes:
Hi Hardy b Thanks for your input. Based on the content of all the
suggestions and advice that I have received so far, two consistent facts have
surfaced. First there is no way that Quaife would have manufactured a case
that
only fit one ratio and the second was to check the pinion depth. At the
time I ordered the pinion bearings I could not source the original Timken
ones
and had to settle for aftermarket b exactb replicas (probably Chinese as
there are no markings other than a number). While the numbers and dimensions
appear to be the same as the stock ones, the large bearing is definitely
different in construction and sits higher in the cup. The correct
replacement bearings arrived today so webll see.
Thanks again.
Barry.
From: Catpusher@aol.com [mailto:Catpusher@aol.com]
Sent: July-10-11 8:37 PM
To: fot@autox.team.net
Cc: barry@penybryn.ca
Subject: Subject: [Fot] Quaife and 4.1 Installation Issues TR3
The only problem that I had with 2 Quaifes that I did for other people was
that the factory Hand Press collets could not get behind the side brgs. to
remove them.
Is the pinion Depth correct?
Who made the 4.1 R & P ?
Quaife problem as mentioned by others?
Hardy
In a message dated 7/8/2011 8:02:47 P.M. Pacific Daylight Time,
fot-request@autox.team.net writes:
From: "Barry Munson" <barry@penybryn.ca>
To: <fot@autox.team.net>
Subject: [Fot] Quaife and 4.1 Installation Issues TR3
Amici - I have purchased a new Quaife directly from Quaife UK, a new 4.11
gear set and a complete set of new bearings for installation in a Southwick
conversion TR3 differential housing. In what should have been a relatively
simple installation process has proved to be one royal PITA. Simply put
with
the pinion installed with the correct preload, even with all the shims
moved
to one side of the carrier there is no way to get any backlash.
This has been driving my installer crazy as they have checked, several
times, all the dimensions, bearing and cage heights. It appears that the
Quaife cage is 1.2 mm taller than the stock cage. I have phoned the Quaife
tech line twice and sent a number of e-mails requesting assistance and
received the following response: "I think that our diff only fits with the
3.75 ratio directly, the only option will be to Machine the crown wheel
face."
<snip>
Barry.
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