Replacing either a Maco 53431 / 56231 / 5ST / 5 STK Old Style Upvc Door Gearbox can take a bit of know how, however should be a reasonably easy to change once you know how.

This is were the team at Upvc Spares 4 Repairs can help, below we have filmed a video showcasing how to change the Gearbox over:

Be aware you will need a TORX T20 screwdriver to remove the screws on these Maco gearboxes.

As always do feel free to contact us via the website or send us an email if you have any questions or require any advice.

Purchase: Maco 35mm Backset Gear Box Door Lock Case Old Type - Suitable To Replace 5ST, 53431 or 56231