Huawei DBS3900 Installation Manual page 109

DBS3900 LampSite
Installation Guide
the distance between them. If they are inaccurately positioned, re-measure and re-drill the
holes. Then, use a rubber mallet to hit a plastic expansion sleeve into each hole.
Figure 8-12 Drilling holes and installing expansion bolts
Step 4 Lead the M3.5x35 screws through the washers, and then through the drilling holes on the
mounting bracket to the plastic expansion sleeves, and use a torque screwdriver to torque the
screws to 1.2 N•m, as shown in
Figure 8-13 Installing the mounting bracket
Issue 06 (2015-10-30)
NOTE
If the screws cannot be tightened using a Phillips screwdriver, use a hex key or an electric screwdriver to
assist the installation.
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Figure 8-13.
8 Installing a pRRU3902
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