AJS & Matchless Owners Club

East Suffolk Section

Technical Tip (10): Leaking push-rod tubes cured

Handy Technical Tip

Many owners of singles find that the push-rod tubes, sooner or later, leak at the top. A certain cure is to cut each rubber sealing gasket carefully half way along its length. Assemble in the head with 25mm x 3.5mm Viton O-rings (ask for No 210), between the two halves.  The tubes are then smeared with oil to aid assembly and pushed up to make a tight seal that will last.