Lock gearbox service on a false-mullion balcony door
A double door with no central post locks through a gearbox and shootbolts, and when that drifts the leaves stop meeting. The gearbox and shootbolts are serviced, both leaves are realigned to shut flush, the gap in the middle closes and the door locks securely again.
What the video shows
- The lock gearbox and shootbolts are serviced
- Both leaves are realigned to shut flush
- The gap in the middle is closed up
- The door locks securely again
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