ididit Retrofit Steering Column: 1955-59 Chevy Truck - Manual (Page 5)

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The Underdash mounting area should be sanded or
ground to remove any debris that have accumulated
over the years. Elongate the
Underdash mounting holes
1/8” inward from one anoth-
er, so the new Underdash
mount screws can be put
through the widened holes.
Affix the Underdash mount
to the dash with provided
washers and bolts. Remove
the two bolts that hold the lower half of the Underdash
Mount together and set those pieces to the side.
Now we will need to clean the area where the new floor mount will be mount-
ed. Simply place the new floor mount in the inner beveled location and secure
it with the 3 bolts & nuts provided. The new floor mount was made to adapt
to the old mounting holes. Place the column clamp over the two male prongs
of the Floor Mount.
New Column Installation:
Once the Delrin and the coupler have
been installed on your steering box, you
can now start installing your new Steering
Column. This may be a good time for an
extra set of hands. From inside the cab,
slide the column
through the hole
of the firewall
and push the
column into the
coupler. Once
the column has been fully pushed through the fire-
wall and into the coupler you can secure the col-
umn to the dash. Gently push the column into the
upper half of the mounted Underdash Mount. Next
slide the lower half of the Underdash Mount onto
the column and screw the two pieces together. At
the floor, screw the clamp onto the two male prongs
to secure your column.