[TR] Replacing a TR3A fan

[Randall]

> It is
> mentioned in the TR3 Service Manual, but no explanation as to how to
> position it.

Balancing the fan is covered starting on page 9 of section C, "27. To
assemble fan for balancing"

> I need to know if it is necessary and how to position it,

The balance piece is listed "as required", so in some cases it's not
required.  When I went through this last year, my fan seemed to be OK
without the balance piece (though my balancing jig might have just not been
sensitive enough).

-- Randall