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AVD3922
Available Shims for Leveling the Base Shoe:
CRL Cat. No. AHS66
1/16” x 3” Aluminum Horseshoe Shims
CRL Cat. No. AHS68
1/8” x 3” Aluminum Horseshoe Shims
CRL Cat. No. AHS64
1/4” x 3” Aluminum Horseshoe Shims
CRL Cat. No. BSS164
1/64” Aluminum Shim Strips
CRL Cat. No. BSS132
1/32” Aluminum Shim Strips
CRL Cat. No. BSS116
1/16” Aluminum Shim Strips
Horseshoe Shims
Shim Strips
Layout and Leveling Procedure
Layout the Guardrail or Windscreen perimeter on the mounting surface with a chalk line. Position the first section of base shoe,
starting at the beginning of a run or at a corner, and align with the chalk line mark. If the installation requires that the base shoe be
level (as opposed to following the slope of the surface) the first section to be installed should be located at the highest elevation.
Start by installing all mounting fasteners hand tight, and then loosen the fasteners for insertion of leveling shims.
Level Base Shoe Installations
When the base shoe is to be level, as opposed to following the slope of the surface, it is easier to level the shoe along its length
before correcting the vertical plumb orientation.
Sloped Base Shoe Installations
When the base shoe is following a sloping grade the laser level can still be useful for preventing any abrupt elevation changes, and it
is easier to level the shoe along it’s length before correcting the vertical plumb orientation.
Align the “PAL” Tool with base shoe and point toward the
Laser Target set at other end of base shoe
Laser light pinpoints on LT1 Laser Target
Insert shims when mounting surface conditions create
occasional gaps under the base shoe. CRL Aluminum
Horseshoe Shims up to 1/4" (6.3 mm) thick can be
used. Good surface conditions will permit the use
of CRL Aluminum Base Shoe Shim Strips. The shim
strips are available in thicknesses of 1/64” to 1/16”
(.4 to 1.6 mm), and allow for fine adjustment of vertical
plumb. After leveling both ends of a base shoe section,
place shims at ALL BOLT LOCATIONS where gaps
between the base shoe and mounting surface appear.
Both sides of the base shoe must be in contact with
the mounting surface or shims before tightening bolts,
or the base shoe will twist out of vertical plumb
alignment. Shims strips should be oriented along
the length of the base shoe and must be close to the
outer edge. The bottom surface of CRL base shoe
is concave to prevent “high centering”, so the outer
bottom edges must be in contact with the shims.
Slide Shim Strips under
Base Shoe to fill gaps
Use the “PAL” Tool to assure the
Base Shoe is level at all points
