STEAM NEWS FROM THE SANDSTONE STEAM RAILWAY!!!

THE RETURN OF THE GIANTS! PART 1
For many years the Giants remained silent in the dark shed, waiting to be unleashed. The last two weeks we start with the preparations for two of Sandstone Estate’s Giants to return to the mainlines of South Africa. Soon they will steam out of the Shed with might and power. The two Giants are 15F number 3052 and Class 25Nc number 3488 with tender number 3476.
The well known 15F number 3052 is being prepared for a complete Boiler Inspection and once she passed, she will haul the Class 25N dead to Johannesburg.
We started with the de-scaling of the boiler and tubes and used a special water treatment to dissolve all hardened scale inside the boiler. The dome was removed and the condition of the scale around the tubes was inspected. The boiler was filled with water and the treatment was added.
A Wood fire was made to get the water boiling to allow the chemicals to get to work.

It took time to heat up the water in this Giant’s Boiler and slowly we feed her to raise heat without stressing the boilerplates. As soon as the boiler cools down, we shall start with the washout and preparations for Boiler Inspection.
While waiting for the boiler to heat up, we started our Bessinger and performed shunting needed in front of the shed at Ficksburg Station. Two loose bogeys were blocking the entrance of the shed and were shunted aside.
Below: The Bessinger performing shunting work in front of the Shed in Ficksburg.

We cleaned this gentle Beast before she was shunted outside for the Boiler washout and for repair work that was needed on her. She operated the last time in April last year when the well known artist, David Shephard visited his beloved 15F.


The Class 15F and 25NC was shunted to the line at the side of the shed where we can be able to work one both.


The ejector and lubricator was removed and taken to the Hoekfontein workshop for repair work that was needed. The ejector suffers from a stuck air clack valve while the Lubricator has a choked steam port. The hidden secret faults will be revealed in next weeks report.
Below: Henry, stripping of the ejector with respect. Almost everything done too a Steam locomotive must be with care and lots of respect.




One of the four vacuum cylinders on the Class 23 tender, fitted to the 15F, had a defective roll ring. A 21” vacuum cylinder is extremely heavy and before we could take it off, we had to remove the brake axle safety bracket to enable the brake axle to swivel vertical down, out of the way. The piston rod was screwed out and the hanger bolts were loosened.


Below: The brake axle lever vertical down to free up space for the massive 21” cylinder to come out. The cylinder was loaded and taken to the workshop for overhaul. The cylinder will be tested and will then be fitted back. Even with the one brake cylinder out of action, the 15F still had very good brakes and once this one is fixed, it will have 100% brakes.


We started with the washout of the boiler, the dome was removed again and Derrick started taking out all the washout plugs for a proper washout.


Below: The washout commenced!


The pilot valve in the header stuck occasionally and the super heater cover on top of the smoke box was removed to access the pilot and main regulator valves. The regulator valves were removed and the cam was turned to enable us to take out all the valves. The pilot valve had a mark on it and needs replacement with a spare one. All the regulator valves will be seated again using grinding paste. It is irritated when the regulator refuses to close and therefore we found it rewarding to find the problem.
Below : water streaming down from the boiler.

Below : Derrick removing the header cover on the smoke box.

I found a proper place to keep a close look on Derrick taking off the valve covers. J


Below: Derrick holding pilot valve on the right and main regulator valve on the left side.


Below : The regulator valves.

Below : Albert cleaning the fire box of 3052.

The right side piston packing was blowing badly on her last run, and the stuffing box was taken removed to set the piston packings. Once the stuffing box was out, inspection proved a problem with the segment rings, situated in a ring holder of its own. The ring holder was opened and we will attend to the problem and will set the piston packings.
Below: The right side piston and ring holder with sir clip seen just above the piston in the rear.


Below : The ring holder.

Below : The segment rings taken out of the ring holder.

We immediately started with the cleaning and cosmetic upgrading of the mighty Class 25 Nc. First we washed her down and then cleaned her. The smoke was then painted with a graphite livery paint, while the tender bogeys will be painted with a very light graphite color paint.


The brakes of the 25NC were a headache and not only were all the braking gears rusted together, but also the vacuum and chamber side was a problem. The release valves were removed from all the cylinders and the pipes had to be re laid to enable us to get the brakes working again.
One of the release valve we removed, had glue in the chamber hole and never could that cylinder ever worked in it life. Most of the brake pipes were stripped off and we needed to fit new ones. All the vacuum chamber pipes and release valves were removed and replaced with new ones.

Below : Note the glue in the chamber hole.

The release valves on the two cylinders on the locomotive were totally blocked. It is not sure how all this came inside. Sometimes little bees, but this one had leaves and wool in.


The right side release valve had the same problem, completely blocked.


All the valves were changed and the pipes were fixed. The next was to loosen the rusted braking gears. The easy part was to take the braking gears off, the difficult part was to fit them back.


With the braking gear pins removed, it was easy to oil and loosen the braking gears. The brakes were adjusted and were ready to test. A friendly diesel driver assisted with the use of his vacuum to test the brakes. Sadly the vacuum tests revealed more problems with tiny holes in the vacuum and chamber pipes running under the tender and under the cab to the front chamber tank of the locomotive. All these leaks were fixed and await the kind help of the driver to assist with the vacuum from his locomotive.

Below : Adjusting the brakes under the tender of the class 25 Nc.

Below : Henry greasing the brake axle of the 25Nc.

Below : The small pipe is one of the vacuum pipes with holes in. This pipe is situated under the cab between the loco and tender.

Below: Crawling under a 25Nc tender.


Below: Menasse cleaned and painted the smoke box.


The buffer beams are painted red again and the red driver wheels will be painted black again. The tender bogeys will be painted dark silver, almost graphite color.


Below: Henry under the 25Nc, repairing the vacuum pipes.

Below : The rusted braking gears.

With the braking gear pull rod removed, the braking gears could be swiveled easily to enable the oil to work in into the pins and links.
Below : Henry oiled every pin and link to insure the free moving of the braking gears.

Below : The inside of the 25Nc, eager to respond!

The vacuum rubber pipes also had holes in and were in a bad condition. They were replaced with new ones.


More news on the 15F and 25Nc to follow next week.

A report on the completed restoration of Class Ngg 16 number 112 to follow! Henk made the number plate for 112 out of wood and it really looks stunning.
STEAM GREETINGS
THE
STEAM TEAM