The two exhaust ports of the right hand cylinder show through the frames whilst the cylinders were having the mounting bolt holes drilled.
Nathan with the magnetic drill, boring the holes in the left hand cylinder.
The left hand cylinder has had the same heat resistant paint treatment.
The smoke box base plate was very worn on the underside. Here calum is building up the wasted area by running welds over it, when completed this will be machined flat.
A closer picture of the weld runs.
The exhaust steam branches were also very worn. A decision was taken to replace them with fabricated ones. This is one of the new branches which will just need a little machining along the large plate.
The picture below shows the old left hand exhaust branch with the smoke box base plate attached. This is to check the alignment of the new right hand exhaust branch. After this was proven the process was reversed to check the right hand branch pipe.
Another view of one of the new exhaust branch pipes.
The smoke box saddle, now with the holes for the exhaust branch pipes cut out.
This is the old exhauster ring (right) with the new casting for the replacement on the left.
This is the upturned chimney with a new piece machined into the liner (old piece on the left). Mounted on to the top is the now machined exhauster ring.
A close up of the new liner which has been rebated onto the old remaining piece and bolted into place.
So far all the frame components have been manufactured and bolted together to prove their fitting. The loco is now at a stage where it is ready to be riveted together, this will involve taking the new parts off and hot riveting them back together.
This process will start when the winter maintenance of our other steam loco, 46512, has been completed.
46512 is pictured below in the carriage shed being lifted off its wheels.