The left hand cylinder casting. The piston and valve have been removed.
Photograph: Darrin Crone.

The right hand valve spindle can be seen with the front valve chest cover still in place. The end of the 2:1 lever extends beyond the frames.
Photograph: Darrin Crone.

The right hand rear valve chest cover slung and ready for removal. the trailing end of the right hand piston valve is in the centre.
Photograph: Darrin Crone.

Martin Ashburner needle gunning the left hand outside frames.
Photograph: Darrin Crone.

The right hand valve looking from the rear when it decided it decided it would not move.
Photograph: Darrin Crone.

The middle valve cover in place with the valve crosshead still on the valve spindle.
Photograph: Darrin Crone.

Loco spring plate marked 67770.
Photograph: Darrin Crone.

The driving wheelset axle and webs primed. The first parts of the loco to receive paint prior to refitting.
Photograph: Darrin Crone.

The front left hand frames have been needle gunned.
Photograph: Darrin Crone.

Valves and pistons wait their turn to be cleaned and examined in the NRM Workshop.
Photograph: Darrin Crone.

The bogie wheelsets have received their first coat of primer.
Photograph: Darrin Crone.

The coupled wheel spring hanger bolts have now been inspected. Their condition is under review. In the foreground is one of the cleaned cylinder covers.
Photograph: Darrin Crone.

Valve guides and the valve covers on which they are fitted.
Photograph: Darrin Crone.

Malcolm Hutton and Peter Brackstone cleaning the front left of the outside frames.
Photograph: Darrin Crone.

All the left hand side outside mainframe has been stripped ready for inspection.
Photograph: Darrin Crone.

The leading valve crossheads cleaned and tagged await refurbishment.
Photograph: Darrin Crone.

Needle gun art. The right hand trailing outside frames, needle gunning in progress.
Photograph: Darrin Crone.

Dave Lee removing the right hand leading sandbox. The frames and motion bracket have been stripped.
Photograph: Darrin Crone.

The frame between the cylinder and the motion bracket is normally occupied by the sandbox.
Photograph: Darrin Crone.

The left hand leading sandbox removed.
Photograph: Darrin Crone.

A view from the viewing gallery showing progress to date. The driving wheelset is in front of the loco. The outside frames stripped to bare metal.
Photograph: Darrin Crone.

The inside of the left hand frame plate has been stripped to bare metal.
Photograph: Darrin Crone.

The main steam pipes that take steam from the boiler superheater to the cylinders in the smokebox have been prepared for inspection.
Photograph: Darrin Crone.

The regulator valve body cleaned for inspection. This is used by the driver to control the amount of steam supplied to the cylinders.
Photograph: Darrin Crone.

Our Cheif Mechanical Engineer Richard Swales examining the main steam pipes by sounding them with a hammer. They will also be ultrasonically tested for thickness
Photograph: Darrin Crone.

The leading and trailing driving wheelsets with crankpins and jouranls covered by protective greased tape to prevent corrosion.
Photograph: Darrin Crone.

The 2:1 lever cleaned and stripped of paint.
Photograph: Darrin Crone.

The crankpins have been protected for the journey to our re-tyring contractors.
Photograph: Darrin Crone.

Looking from on top of the frames Dave Lee and Alan Pitt remove the right hand driving sandbox.
Photograph: Darrin Crone.

Taking his turn with the needle gun is Malcolm Hutton. He is sat on the frame stretcher that also provides support to the boiler. A view looking forward.
Photograph: Darrin Crone.

The outside steam chests have been de-carboned and cleaned. Bob Shearman cleans the right hand.
Photograph: Darrin Crone.

The middle and left hand crossheads. The middle has just been removed.
Photograph: Darrin Crone.

The crank axle wheelset had to be lifted out of the wheeldrop pit to get a straight lift.
Photograph: Darrin Crone.

The crank axle wheelset lifted out of the wheeldrop pit and moving across the workshop toward the truck.
Photograph: Trevor Camp/SNGLT.

The first bogie wheelset was loaded using the truck's crane after the workshop crane failed.
Photograph: Trevor Camp/SNGLT.

The workshop viewing gallery lifted to allow the use of the crane.
Photograph: Trevor Camp/SNGLT.

Wheelset being carefully placed on the jig constructed by the hauliers.
Photograph: Trevor Camp/SNGLT.

The lorry, with two pairs of driving wheels and one pair of pony truck wheels is now off to unite with the trailer and the first three sets of wheels.
Photograph: Trevor Camp/SNGLT.

All wheelsets loaded, trailer hitched and ready to set off for the South Devon Railway.
Photograph: Trevor Camp/SNGLT.

The expansion link trunnion bearing before removal.
Photograph: Darrin Crone.

The top of the superheater header prepared for inspection.
Photograph: Darrin Crone.

Alan Pitt and Steve Bradley with the NRM workshop vacuum cleaner during cleaning the cavities between the cylinder casting and the loco frames.
Photograph: Darrin Crone.

Peter Brackstone behind the front buffer beam needle gunning. Peter has by far done more needle gunning than anyone else.
Photograph: Darrin Crone.

Micheal and Philip Wilson cleaning crossheads.
Photograph: Darrin Crone.

The upturned bogie frames being cleaned by Rod Thomas and Tom Bell.
Photograph: Darrin Crone.

Two cleaned coupled wheel axleboxes.
Photograph: Darrin Crone.

The frames with all paint removed await detailed inspection.
Photograph: Darrin Crone.

With the frames stripped detailed examination is possible. On the frames is a brass plate showing that the loco carried experimental nuts on its slidebars.
Photograph: Darrin Crone.

One of the bogie spring beams is marked 2568 LNE. Locomotive 2568 was Sceptre which became 60069, perhaps another recycled component?
Photograph: Darrin Crone.

Roger Turnbull cleaning the trailing side of the left hand cylinder.
Photograph: Trevor Camp/SNGLT.

The right hand driving axlebox horn casting is the only one with BR cast markings. The other five are marked LNE.
Photograph: Trevor Camp/SNGLT.

The driving wheel set in the South Devon Railway's workshop, without tyres.
Photograph: Darrin Crone.

The prime painted right hand sand box.
Photograph: Darrin Crone.

Rod Thomas deep cleaning between the frames.
Photograph: Darrin Crone.

A general view of the loco in workshop.
Photograph: Darrin Crone.

Before the end of the piston valve is cleaned.
Photograph: Darrin Crone.

After the carbon is removed from the valve.
Photograph: Darrin Crone.

Engineering team volunteer Dave Lee removing a broken stud.
Photograph: Darrin Crone.

Marking on the underside of the bogie centre casting. Perhaps a date with the drawing/part number above. To the right of the drawing number(?) is a diamond stamp with "NE" inside, similar to the diamond "LNER" stamps found on the right hand frame plates.
Photograph: Darrin Crone.

The outstanding finish achieved on the right hand cylinder casting after hours of volunteer Engineering Team effort. This allows a thorough inspection of the component and its fasteners.
Photograph: Darrin Crone.

Crack testing has begun on the brackets on the bottom of the frames where the coupled wheel springs are attached.
Photograph: Darrin Crone.

The standard of cleaning on the upturned bogie is as good as elsewhere on the loco's components. This is the view from the leading end. The lack of paint on the surfaces that normally face the ground is clearly visible, though it does not seem to have deteriorated as a result, probably due to the thick layer of oil it normally carries.
Photograph: Darrin Crone.

The old nuts and washers on the upper dragbox fitted bolts are removed and temporary nuts put on those bolts that are to be left in place.
Photograph: Darrin Crone.

Heating the dragbox nuts to help get them off the bolts.
Photograph: Peter Brackstone.

The sandboxes looking resplendent in undercoat.
Photograph: Peter Brackstone.

The leading right hand combined spring and brakeshaft bracket upside down on the end of the marking out table for measuring prior to repair.
Photograph: Darrin Crone.

Using dye penetrant fluids on the loco brackets to test for flaws leaves the inspected areas pink. This is the right hand slidebar bracket.
Photograph: Darrin Crone.

Bob Shearman cutting the footplating above the left hand cylinder to allow access to change a bolt.
Photograph: Darrin Crone.

The painting bench has now been moved to in front of the loco.
Photograph: Darrin Crone.

Marking on the outer Cartazzi frames similar to the marking on the main frame plates.
Photograph: Trevor Camp/SNGLT.

Trevor Wilford removing a loose bufferbeam bracket rivet.
Photograph: Eddie Gibbons.

The bracket on the right hand side of the locomotive that carries the lubricators has been tested for flaws.
Photograph: Darrin Crone.

The bracket is stamped 4498, the LNER number for Sir Nigel Gresley. It looks as if we have the right engine.
Photograph: Darrin Crone.

The brackets on the left hand side of the engine that have been tested are now being painted.
Photograph: Darrin Crone.

Malcolm Bateman operates the mag drill while drilling through life expired rivets while Pete Brackstone applies lubricant.
Photograph: Darrin Crone.

The slide bar bracket on the right hand side cylinder casting is under examination for cracks.
Photograph: Darrin Crone.

The coupled wheel splashers are being trail fitted and repaired.
Photograph: Darrin Crone.

The slide bar bracket on the left hand side cylinder casting is under examination for cracks. The valve liner has also been tested. The exhaust ports can clearly be seen.
Photograph: Darrin Crone.

The boiler in the North Yard of the NRM York with the volunteer Engineering Team. The boiler will soon be leaving York for overhaul at the Llangollen Railway workshops.
Photograph: Trevor Camp/SNGLT.

Malcolm Bateman trial fits the trailing left hand coupled wheel splasher.
Photograph: Darrin Crone.

The front of the loco is now receiving the attention of the paint team. The areas painted have been examined and prime painted.
Photograph: Peter Brackstone.

The front of the loco with the first coat of undercoat.
Photograph: Peter Brackstone.

Mike Page cleans up the rivet hole countersinks.
Photograph: Peter Brackstone.

The top leading corner of the right hand cylinder. The footplating has been cut back to allow access to the bolts which have now been removed. New bolts will be fitted.
Photograph: Darrin Crone.

The front right spring and brakeshaft bracket has been refitted to the loco for measuring relative to the left hand bracket.
Photograph: Darrin Crone.

Painting of examined parts around the frames continues.
Photograph: Darrin Crone.

The splashers have been repaired and now have received their first coat of paint.
Photograph: Darrin Crone.

The large frame stretcher is being "di-pen" tested.
Photograph: Darrin Crone.

The areas that will be covered by the refitted steam sands boxes have now received gloss paint.
Photograph: Darrin Crone.

The boiler on its rail wagon in the NRM west car park ready for loading on to road transport. When it returns it will be overhauled and steam tested.
Photograph: Darrin Crone.

The boiler is lifted clear of the rail wagon by an Emsley crane, who lifted the boiler from the frames earlier this year.
Photograph: Trevor Camp/SNGLT.

Carefully the boiler is swung round to line up with the trailer.
Photograph: Trevor Camp/SNGLT.

The boiler is slowly lowered onto the trailer.
Photograph: Trevor Camp/SNGLT.

The boiler on its way to Llangollen. Because of the restricted access to the NRM the boiler had to be taken out through the city walls.
Photograph: Malcolm Bateman.

Now the boiler on its trailer is negotiating its way through the streets of York.
Photograph: Trevor Camp/SNGLT.

Here the lorry has to use the full width of the road to negotiate a turn.
Photograph: Trevor Camp/SNGLT.

The boiler now saying goodbye for the time being, with an appropriate bracket signal the other side of the wall.
Photograph: Trevor Camp/SNGLT.

The centre of the loco frames are supported by jacks.
Photograph: Darrin Crone.

The splashers have now received coats of undercoat.
Photograph: Darrin Crone.

At Llangollen the boiler is lowered on to a rail wagon prior to being shunted in to the workshops.
Photograph: Trevor Camp/SNGLT.

The first part fitted to the loco during this overhaul was a fitted bolt. Locomotive Engineer Darrin Crone starts the bolt in to it's hole. Chief Mechanical Engineer Richard Swales finally driving it home. One year to the day since the loco entered the "works".
Photograph: Richard Swales.

The bolt tight and home.
Photograph: Darrin Crone.

The boiler in the works at Llangollen.
Photograph: Darrin Crone.

The heads of the boiler firebox stays on the left hand side of the outer wrapper are being removed at Llangollen.
Photograph: Paul Aston.

Andy Lowes reaming holes in the frames for the fitted bolts that will secure the left hand steam sand box.
Photograph: Richard Swales.

The bolts are machined to suit the holes reamed by Andy.
Photograph: Richard Swales.

Andy Lowes knocks in the fitted bolt with a satisfying drive.
Photograph: Richard Swales.

The front of the right hand cylinder showing the valve liner and exhaust steam passage thoroughly decarboned.
Photograph: Richard Swales.

The voids in the cylinder castings have previously been cleaned out. A view from the front of the right hand cylinder. The pipe in the distance is a lubrication pipe that goes in to the steam chest.
Photograph: Richard Swales.

All the fitted bolts are in and the sand box is secured.
Photograph: Richard Swales.

The lower dragbox nuts and the rearmost two bolts are being replaced due to wastage. The driver's side ones are in good condition.
Photograph: Trevor Camp/SNGLT.

Bob Shearman has refitted the bottom access plate to the sandbox refitted last week.
Photograph: Trevor Camp/SNGLT.

One of the sand filler guards being weld repaired in the NRM's welding workshop.
Photograph: Trevor Camp/SNGLT.

The coupled wheel splashers repaired and were finished in gloss this week.
Photograph: Trevor Camp/SNGLT.

The right hand slidebar bracket has received coats of undercoat.
Photograph: Trevor Camp/SNGLT.

The painting bench has been turned to give more room in the workshop for locos over the wheel drop. The sand filler guards normally beneath the streamlining have been repaired and are now being painted.
Photograph: Darrin Crone.

Both sandboxes for the centre driving wheels are now fully fitted.
Photograph: Darrin Crone.

The holes where the old dragbox bolts were removed are being cleaned up to prepare for the fitting of new bolts.
Photograph: Darrin Crone.

Sections of footplating are now being painted.
Photograph: Darrin Crone.

The left hand side of the firebox in the process of stay removal at Llangollen.
Photograph: Darrin Crone.

Alan Pitt, has been a member of the Engineering Team throughout 2016. He is preparing the area around the sand filler tubes for painting.
Photograph: Ken Woods.

A general view showing our new lighting and inside the frames Peter Brackstone Painting Team Leader.
Photograph: Ken Woods.

On his first day with us Phil Slater cleans the threads of the left hand drain cock bracket studs.
Photograph: Darrin Crone.

Richard Swales begins weld repairs to the right hand footplating.
Photograph: Darrin Crone.

The right hand frames are now being tested prior to painting.
Photograph: Richard Swales.

Andy Lowes, furthest from the camera, knocks out the trailing right hand valve liner towards Darrin Crone who steers it out of the cylinder casting.
Photograph: Richard Swales.

The trailing middle valve liner removed this week. The steam to and from the piston passes through the slots. Either side of the slots the liner is tightly fitted in to the cylinder casting.
Photograph: Darrin Crone.

The front of the middle cylinder casting. The valve chest where the middle liners were removed from is to the right of the cylinder bore.
Photograph: Darrin Crone.

The removed valve liners from middle and right hand steam chests lined up next to the right hand cylinder.
Photograph: Darrin Crone.

The driving horn stays were removed this week for cleaning and inspection. They bridge the gap across the frames, below where the axleboxes are normally fitted.
Photograph: Darrin Crone.

A view of the hornstay from inside of the frames showings how it is secured.
Photograph: Darrin Crone.

The spacer brackets between the Cartazzi frames were painted this week.
Photograph: Darrin Crone.

The cab has been adorned with Christmas lights. Merry Christmas from the Engineering Team.
Photograph: Darrin Crone.