Drill and tap – Kistler-Morse KM L-Cell Bolt-On User Manual
Page 61
Chapter 6. Microcell Installation on Vertical Pipe Legs
6-4
Tap Guide
(2 places)
Drill
Template
Drill Guide
(2 places)
Center
Hole
(template
is mounted
in place
with #8-32
screw at
this point)
Bare
Metal
Surface
(typical)
1.25”
(typical)
0.65”
(typical)
3” Microcell
1.875”
(typical)
2” Microcell
1.55”
(typical)
3” Microcell
3.75”
(typical)
2” Microcell
3.1”
(typical)
Figure 6-8. Prepared Mounting Surface
Template
Mounting
Hole
(typical)
2.
Mark the surface preparation area for the vertical Microcell.
3.
Attach coarse grit sandpaper to the grinder. Remove heavy paint and
rust with the grinder until a bare metal surface is achieved for the
Microcell(s). Due to the use of coarse grit, the resulting surface is
somewhat coarse. Fig 6-7
4.
Replace the coarse grit sandpaper with fine grit sandpaper. Grind until
the surface(s) is completely down to bare metal and smooth to the
touch.
Note
The Microcell must be mounted against smooth, bare metal.
Remove all paint and rust from the area where the Microcell is to be
fastened.
Drill and Tap
1.
Using the #8-32 tap, thread the template mounting
hole for the vertical Microcell (drilled during Surface
Preparation) to a minimum
5
/8” (16mm) depth, full
threads. Remove any burrs from the hole.Fig 6-8
2.
See Figure 6-9. Position the drill template so the center
hole lines up with the template mounting hole.
3.
Fasten the drill template to the template mounting
hole through the center hole, using the captive #8-32
socket head cap screw. Use a level to ensure
correct orientation.
4.
Using the #29 drill bit, drill two
3
/4” (19mm) deep holes
in the leg through the template drill guides.
5.
Loosen the screw securing the template and rotate the
template until the two tap guides line up with the
drilled holes. Push the #8-32 tap into one of the tap
guide holes to align the template. Retighten the screw
securing the template.
6.
Using the #8-32 tap, thread the two holes through the
template tap guides. Tap to a minimum
5
/8” (16mm)
depth, full threads. Remove the template from the leg.
7.
Remove burrs from all the holes created.
Figure 6-9. Drill and Tap Template
Figure 6-7. Prep area