SECTION 1 - Engine Compartment
Tachometer Sending Unit
The tachometer sending
unit is orange in color
and is mounted below
the distributor cap, on
top of the distributor.
With the sending unit in
place, an extension
spring clamp is needed
on each side of the
distributor to hold the
cap in position.
The cable that
c o n n e c t s t h e
tachometer gauge to
the sending unit has
two large plugs, one
on each end. One
connects to the
cable on the gauge,
and the other end
connects to the
cable on t he
sending unit.
There is a red tag about 4-
3/4" x 2-3/8" is attached to
the wire from the sending unit
and contains instructions for
mounting and removing the
tachometer sending unit.
There is a warning on each
side of the tag which reads "WARNING: DO NOT
REMOVE TAG".
Apparently no one heeded this warning as only two members in our survey acknowledged the
existence of this tag. The tag is included in the box of new units, but I don’t know if Studebaker
attached the tag at the factory. A tag was present on one of my cars, but the distributor and
sending unit had been changed before I purchased the car. The tag was made of a card stock
type material, so it is possible that it didn’t survive by the time our survey was conducted, if it was
installed at the factory..
Reference Source:
Stewart Warner Catalog No. 4185, Installation Instructions.
New Old Stock tachometer sending units.
1956 Passenger Car Shop Manual, figure 81, section 6, page 39.
Last Update - July 2, 2018
Page 40
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