Hi Toby,
Thanks for your quick reply. My confusion comes from the fact that when it
was rebuilt about 20 years ago, the two washers were replaced differently
from each other. When my reverse gear started chattering, I pulled it out
and tore it down, the cause was the rear snap ring on the reverse idler
shaft had slipped off and was laying on the bottom of the extension housing.
Excessive movement of the shaft and the reverse idler gear caused some
broken teeth and considerable wear on the thrust washers. I got new gears
and washers. In trying to understand the function of bi-metal washers I was
ready to assume that the brass (soft) side should contact the aluminum
(soft) housing and the steel (hard) sides would contact the gears. It would
seem to me that a soft metal rubbing against a hard one would be less
durable and wear faster. That's why the question.
I respect your opinion, if I don't hear from others, I'll try it your way.
Thanks again,
Mike Hudson '67 - 1600
----- Original Message -----
From: <RacerY@comcast.net>
To: "Mike H." <twobeaners@earthlink.net>; "Datsun Roadster List"
<datsun-roadsters@autox.team.net>
Sent: Tuesday, October 31, 2006 7:08 PM
Subject: Re: 4-speed reverse idler shaft
> It does, actually, make sense-
> I seem to remember that the steel backing goes against the case,
> and the softer- brass- face goes against the steel gear.
> Figuring that the washers are held from rotating by the flat,
> and the gear will rub against them.
>
> You might just measure 'em and make sure they're the same thickness....
>
> Toby
> -------------- Original message ----------------------
> From: "Mike H." <twobeaners@earthlink.net>
> > Is there anyone on the list that has worked on or familiar with the
'67 - 1600
> > 4-speed trans? Got one simple question maybe one of you can answer. It's
about
> > the two thrust washers on the reverse idler shaft. They are square
(straight)
> > on 3 edges and round on one. They are steel on one FACE and brass or
bronze on
> > the other side. Both of these washers are like this. Question is: Which
of
> > these faces steel or brass contacts the aluminum case and which one
faces the
> > steel gear? I hope that makes sense!
> > Thanks as always,
> > Mike Hudson '67 - 1600
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