SB LMO spacers

[Marshall]

The '401 assembly manual shows the LMO is mounted with the chassis
turned inverted and the LMO lugs are pushed up through the holes
from the top side (which is facing the bench), and flat washers,
lockwashers, and nuts are then put on the lugs that are sticking
down through the chassis (whose bottom side is facing UP at this
time). The assembler may have misinterpreted that the chassis was
to be inverted and thought the washers were to be put on the TOP
side of the chassis,  OR  he may have thought the LMO shaft needed
to be raised to prevent binding when the front panel was mounted to
the chassis.  However, that is totally unnecessary, because an awful
lot of fore/aft, up/down, and right/left adjustability is engineered
into the positioning of the LMO to prevent binding of the shaft and
the dial against the front panel during assembly.

Marshall Dues - WB5MYO
Katy, Texas

Building Heathkits since 1957



Mark Graalman WB8JKR wrote:
>
>    I have a friend that just picked up a pair of the
> 401/301 twins, in both units the LMO's are spaced
> above the chassis by washers, anyone heard of this
> before and as to why it might be done, was it a
> modification of some sort in later units? None
> of my units have it done.
>
>

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