A customer in Weybridge got in touch because the patio door had finally stopped opening. It had been getting harder to lock and unlock for some time before eventually refusing to operate at all.
From the symptoms, I was fairly sure the multipoint mechanism was at fault and gave the customer a rough estimate before attending, hoping the existing system might still be repairable.
Once on site, the handles were no longer doing anything. After removing them, I noticed that the gearbox had a second spindle position. That gave me another way to operate the mechanism and I managed to open the door without too much trouble.
Because only the upper spindle had been used, I briefly hoped I might be able to save the gearbox by swapping the spindle positions. Unfortunately, the two sections were not compatible on this model.
I took the measurements for a replacement mechanism and refitted the old one temporarily so the customer could still secure the door overnight.
The new mechanism arrived the following morning. I cut it to size, installed it and then worked through the alignment of both doors. Saying that it needed “a few adjustments” would be generous — virtually everything required some correction before the system operated properly.
Once finished, the patio doors were opening, closing and locking smoothly again.
