Push Gathers Steam to Restore a Historic Loco
J515 Updates from the Seymour Railway Heritage Centre
Rare Arnott's biscuit van restored
During the couple of weeks since we last posted, there have been a few distractions.
But, progress is being made.
We begin around 10 days ago with Robbie cleaning out the radiators that are intended to be fitted into P22. A thorough inspection suggests they are in good condition. High pressure water is being used to back flush the air passages in the cores. The day prior the water spaces were flushed with very little contaminated material in evidence. When the new gaskets turn up from the supplier, the header tanks will be swapped around to get the right combination and then final testing.____________________________________________________________
Back in the shed the next day the long end of P22 has had new material installed replacing rusted steel around the deck level. Additionally the horizontal ribs behind the end sheet have been straightened and the distortions from the original welding corrected.___________________________________________________________
This blog will probably be known as "Robbie's Stardom" as he features again. In the radiator compartment he is straightening the baffle that supports the fan cowl. It has been heated, straightened, shrunk, stretched and other wise adjusted to get it back into the correct shape and alignment following the fan running amok._______________________________________________________________
After heating a portion of the baffle with the gas, Robbie is now panel beating the material into the shape that it should be. The fan cowl is on the left laying back a bit. Every now and then it is pushed into position to check the progress with the baffle.______________________________________________________________
Back under X31 repairs to the drag box by welding are complete. The next thing to do is offer up the draft assembly up to the box, This view looking from under looking to the back of the cowcatcher. At the top of the picture the greeny - white rectangle is the coupler slot in the headstock. The draft assembly is prominent and is supported on two steel bars across the pit. Arrangements are being checked.___________________________________________________________
Now from under the cowcatcher the assembly is back on the lifting table and is nearly at the height that it would enter the drag box. It does though need to be pushed about 20 mm to the right for the front follower to fit against the front face of the drag box. When that was done the assembly would only go 30 mm up into the drag box as the spring portion of the assembly was not pre-loaded enough. We used our 40 tonne press but that was obviously not enough. A few days later with the assembly lowered out, it was taken to a friendly local business with a 100 tonne press. It was pre-loaded enough and has since been jacked up into position and now just awaits the coupler being refitted._____________________________________________________________
One of the other projects is the replacement of the smokebox on J515. The steam pipes between the superheater header in the top of the smokebox and the cylinders need to be refitted. The pipes them selves were attended to a few blogs ago. Now the task is lapping the bottom steam pipe joints to the cylinders. With Neil using his years of experience working the handle to lap the sealing ring, Steve (with the gloves) applies some downward pressure.___________________________________________________________
After a few minutes Neil lifts the ring with the handle attached to have a look at how well the lapping process is progressing. On one side this took a few hours to eliminate a deep groove whilst this side was a lot quicker taking less than an hour.______________________________________________________________
The flange on the cylinder. At the bottom the shiny band is not forming a complete ring. This means some more lapping to ensure a good seal.can be achieved.________________________________________________________________
The ring is covered with lapping paste and is now ready for another go at getting a good contact between ring and cylinder. It will be turned over and with the handle at the top it is twisted to and fro with the paste between the two mating surfaces.________________________________________________________________
A close up now of the ring with handle on top, Neil is the twister and the gloves are Steve applying some weight to increase the cutting efficiency.____________________________________________________________________
The finished product. The shiny band is now a lot wider and will provide a steam tight seal. The studs have just been made and have been inserted into the cylinder flange._________________________________________________________________
Now for a different level of finesse. The standard (10 lb or 5 kg if you have been metrified) hammer is brought into use to assist in removing brake heads from the brake beams of the standard gauge pass car bogies. Every bit and piece has to be disassembled for cleaning inspection, lubrication and reassembling. _______________________________________________________________
The head is almost off. The hammer is having a rest. Perhaps it is the operator who is really having the rest!__________________________________________________________
The bits are now apart and the guys will move on to the next beam and heads. This type of bogie has four beams and 8 heads. Double that and that is the scope of the current task._________________________________________________________________
A few days later and some of the brake heads and hanging lings have been cleaned, inspected and the moving parts coated with a spray graphite. The graphite goes on wet like paint and dries within a few seconds._____________________________________________________________
The beams have also had the same treatment. In some cases the end bushes have been refitted.____________________________________________________________
With the brake beams and brake heads all stripped and just about all ready for re-assembly, just about the only thing left on site is the wheels. Shortly these four wheels will be moved into storage and four refurbished sets brought up ready for the re-assembly.__________________________________________________________________
The repainting of P22 moves forward with the long end nose being filled and sanded to achieve a smooth and flat surface._______________________________________________________________
The next day we catch the culprit in the act. Robbie (again!) has added further bog and is sanding it down. ____________________________________________________________
Getting on his knees Robbie is working down to the deck level. It is important that big flat areas have a smooth and even surface as the gloss paint will highlight any defects and ruin the effect being sought._____________________________________________________________
At the other end of the loco preparations are in hand for grit blasting. The number boards have been removed, the wind screens are being masked and the marker light lenses are also masked up._________________________________________________________________
A temporary lull in external work on body of State Car 4 has not meant no progress. In the carpentry shop more of the mirror panels from above the windows are being masked ready for top coat painting.________________________________________________________________
Stacked up not far away some of the panels are finished and are waiting the time when they will be refitted to the car._________________________________________________________________
At the far end of the shop the end corridor door has been paint stripped and has been sanded.______________________________________________________________
The final view for this time is taken under 219BS at Newport. We are getting the first two cars ready for movement to Seymour. In this picture there are a number of pipes with cut end where the triple valve should be. Arrangements have been made to fit a replacement valve and reconnect the pipes in a week or two.____________________________________________________________________
With a passenger train operation scheduled for Saturday 9th June, much work in the next few days will be concentrated in that direction.
Until next time -----_________________________
This article first appeared on srhcblog.blogspot.com
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