Huawei OptiX OSN 9800 U32 Enhanced Subrack V100 Quick Installation Manual page 34

Installing Expansion Bolts
Screw the expansion bolt clockwise until the guide ribs properly engage with the guide grooves.
Insert the expansion bolt into the hole. Knock the expansion bolt into the hole with a claw hammer.
Screw the expansion bolt clockwise to ensure that the expansion nut and tube are not easily pulled out of the
hole.
Screw the expansion bolt out (anticlockwise) of the hole. Remove the spring and flat washers from the
expansion bolt.
M12 x 60 expansion bolt
Spring washer
Flat washer
Expansion tube
Guide groove
Guide rib
Expansion nut
34
Unit: mm