Following the STC approval from Transport Canada in February 2021, Marsh Brothers Aviation has secured FAA approval for their Beech® brake master cylinder upgrade/repair kit.
The Marsh Brothers kit offers an upgraded lip seal which replaces the piston wiper and O-ring with a single seal/wiper. The single lip seal replaces two elements of the original design and offers the same benefits over a traditional O-ring.
This FAA approved brake master cylinder upgrade/repair kit comes with all the parts needed to rebuild a master cylinder including static gland seal, piston head seal and backup ring, new retaining clips, nut and cotter pin. Also included in the kit is specialized tooling that was developed to aid installation of the Thorseal. Two kits are now available for sale, including one for the King Air, OEM 90-380001 series brake master cylinder assembly.
For more information, call (905) 335-1440 or go to www.MarshBrothersAviation.com