Progress on Arn Jung locomotive, No. 847, boiler
22 February 2012 update
Keith Stevens has just provided the following report. The Arn Jung Locomotive Boiler has now been completed and passed it’s hydraulic test on Monday 20 February 2012. We have steamed this to 110 psi this was basically to seal up the leaks and small weeps in the boiler. As you well know a steam test can only be done when all the fittings are attached to the boiler and is mounted on the chassis of the locomotive.
Below are pictures of the final stages of restoration which depict boiler tubes being fitted, beading of the tubes and caulking of the firebox including boiler plate seams and boiler stays. Also firebox and smokebox doors fitted and the completed item.
19 January 2012 update
Boiler for Arn Jung, No. 847, nearly completed
Keith Stevens has sent us these excellent photos. It is plain to see that Keith is a master boiler maker who knows exactly what he is doing, and more importantly does things the traditional way.
The pictures depict tapping out the stay holes by hand (108 in all) followed by screwing in the stays and thereafter caulking the stays in the firebox and a view in the firebox having the stays being caulked. Also tubes are starting to be fitted.
16 December 2011 update
Keith Stevens has now completed the outer Boiler shell and is now at a point of completing the manufacture of the firebox. He has just received the tubes from Surtees and is in the process of machining the firebox stays along with the firebars, smokebox door and firebox door. He has been in contact with Lukas Nel and fitted feed water flanges as he has required.
The photographs enclosed depict assembly of the outer firebox, machining of feed water flanges, making rivets, firebox and boiler barrel fitted together, view inside external firebox, drilling rivet holes, manufacture of firebox, boiler construction from smokebox end, original dome re-fitted, view into external firebox after riveting, internal counter-sinking rig for tube plate flange joints.
