
Mill Twin Cylinder Model Steam Engine v2 – Assembly Instructions v1.1
Copyright - Chiltern Model Steam Engines
Page 5.
11.
Screw the Packing Nuts into the Cylinder Plate Inners.
12.
If it is planned to use high pressure steam - during final assembly, to improve the seal
around the piston shaft, PTFE tape can be wrapped around the shaft and Packing Nut
thread. When tightening the Packing Nut into the plate ensure the shaft can still move
freely, that is, do not screw tight. Place one Cylinder Plate Inner/Packing Nut onto a Piston
Shaft.
13.
Install 2 Piston Rings on a Piston if not already in place, then screw the Piston onto the shaft
and lock in place with an M3 nut using a 5.5mm socket spanner or small pliers. Be careful
not to damage the Piston Rings when tightening the Piston/nut.