How to Service the Hilolite Roof Mounted Telescopic Mast

09/05/16 – How to Service the Hilolite Roof Mounted Telescopic Lighting Mast This video will show you how to service the Hilolite mast properly; the most important parts are: Removing the spigot; Removing the collars; Removing the piston; Removing the sections; Replacing the seals; Cleaning the sections; Re-assembling the mast.