Kistler-Morse KM L-Cell Bolt-On - Manual (Page 48)

Chapter 5. L-Cell Installation on Skirt-Supported Vessels
5-11
Note: Use industrial-grade, heavy-duty tapping fluid when
drilling and tapping.
Surface Preparation
1. See Figure 5-16. At the center of the previously marked mounting
location for the outside L-Cell, drill all the way through the skirt
with the #36 drill bit. This produces the template mounting hole.
2. Peel the backing off the coarse (36) grit sander disk and press the
sander disk onto the surfacing disk. Using the template mounting
hole as a tool center, remove heavy paint and rust with the
drill-mounted surfacing disk until a 2.50” (63.5mm) diameter bare
metal surface is achieved (Fig 5-17)
• Use straight, constant pressure. Do not roll or rock the grinding
disk as this will cause a ‘cupped’ surface.
The goal is to grind a flat surface for mounting the L-Cell.
• Due to the use of coarse grit, the resulting surface is somewhat
coarse.
3. Replace the coarse grit with the fine (60) grit sander disk. Using the
template mounting hole as a tool center, grind until the surface is
flat and smooth to the touch. This results in a 2.50” (63.5mm)
diameter surface where the L-Cell will be mounted. (Fig 5-18)
Note
The L-Cell must be mounted against smooth, bare metal. All
paint and rust must be removed from the area where the L-Cell is
to be fastened.
4. Repeat Steps 1 through 3 to prepare the surface on the inside of
the skirt before proceeding with L-Cell installation.
I Installing L-Cells
Figure 5-16. Drill
Mounting Hole
Figure 5-17. Prepare area
with Disc Sander
Figure 5-18. Use finer
grit sander disc.