At the desired location, drill two .52 (13.10 mm) dia. holes in tank wall corresponding to mounting centers of gage. FIG. A.
Remove burrs from holes to provide good sealing surfaces. FIG. A.
Install gage to tank - Make sure O-rings are set properly in recess provided, either in gage body or in sealing spacer sleeve, (outside of tank wall between gage and tank.)
Tighten mounting nut with a socket wrench. Torque mounting nut to 60 inch lbs (6.78N•m). It is not necessary to over compress seals to make a liquid tight seal. FIG. B.
Gages 3.00 through 12.00 (76.20mm through 304.80mm) centers inclusive have tank seals recessed in gage body-Gages 13.00 through 20.00 (330.20mm through 508.00mm) centers inclusive are furnished with sealing spacer sleeves.* FIG. B.