The equal lever of the Gresley conjugated gear has new bushes and is shown on the machine after being bored out.
Photograph: Richard Swales

The Cartazzi "wedges" have been skimmed by one of our volunteers to restore the correct geometry.
Photograph: Richard Swales

The trailing Cartazzi horn liners are worn beyond further use. Here the right side one is being carefully removed.
Photograph: Richard Swales

The keyways in the coupling and connecting rods are being carefully dressed to remove wear and to ensure security of the key when the bushes are pressed in.
Photograph: Richard Swales

The new steam pipe casting have been delivered and await transporting to contractors for machining.
Photograph: Richard Swales

The middle gudgeon pin before grinding has to be fitted with a plug drilled with a centre hole so that the pin can be rotated about its cemntre accurately. The plug is fitted at the large end.
Photograph: Darrin Crone

The boiler lagging is now being fitted.
Photograph: Ken Woods

The tender filler space is being painted ready to accept the air tanks. Here shown in undercoat.
Photograph: Peter Brackstone

The new valve guide casting is carefully positioned on the valve chest cover before being drilled for its securing bolts.
Photograph: Richard Swales

The crinoline that supports the streamline casing is being repaired and painted before fitting.
Photograph: Richard Swales

The air brake tanks have been hydraulically tested and passed by the insurance company.
Photograph: Darrin Crone

The crinolines are prepared for fitting.
Photograph: Richard Swales

Insulating the boiler. The insulation is retained with chicken wire.
Photograph: Richard Swales

Two of the gudgeon pins after return from the grinders.
Photograph: Richard Swales

All the coupling rod and outside big end bushes have now had keys made and fitted, and the oiling felts fitted.
Photograph: Richard Swales

The knuckle pins that join the coupling rods together have tapers machined to provide best fit in the rods.
Photograph: Richard Swales

The valve guides are mounted on the valve covers and are examined for their condition.
Photograph: Richard Swales

One of the valve guides has been replaced by a new casting. It is being fitted to its valve cover.
Photograph: Richard Swales

All the cylinder relief valves have now been successfully tested at their set blow off pressure. A lot of work has gone in to recovering some of these valves.
Photograph: Richard Swales

All the crinoline sections, in order of fitting are in front of the loco being prepared.
Photograph: Trevor Camp / SNGLT

The key ways in the rods show wear so these are dressed. The new keys fitted to the bushes locate in here.
Photograph: Richard Swales

The backhead cladding is fitted. It can be seen where the numerous large sections were previously cut out for repairs. These have been welded in place.
Photograph: Peter Brackstone

The main boiler cladding after a preliminary clean. It is made up of original sections, patches and newer material.
Photograph: Peter Brackstone

More of the main boiler cladding showing the condition of some of the sections.
Photograph: Peter Brackstone

We had a visit from twp Chelsea Pensioners.
Photograph: Tony Oldfield

The Cartazzi overhaul is well under way. The bronze slide have been skimmed to return them to the correct shape. Both are marked as being from 4464 Bittern, the Left previously marked as being on V2 4788 (60817).
Photograph: Darrin Crone

The trailing crossheads have been machined to remove all their whitemetal and to true them up. The crosshead on the milling machine located on the valve spindle socket.
Photograph: Richard Swales

The loco now carries a complex electrical system. Here some of the wiring is reinstalled after new conduit was run in below the cab floor.
Photograph: Richard Swales

One of the coupling rod bushes about to be pressed in.
Photograph: Richard Swales

One of the coupling rod bushes being pressed in, aligned by a close fitting key.
Photograph: Trevor Camp / SNGLT

The old valve guide that was unacceptably out of position is machined to correct its alignment.
Photograph: Richard Swales

The reverser column is refitted now the backhead cladding is in place and painted.
Photograph: Peter Brackstone

Not mentioned in the report but there's plenty of activity on more minor components. Here the cover for the tender gangway top spring is being painted before fitting.
Photograph: Peter Brackstone

New tender streamlining steel in position.
Photograph: Richard Swales

The streamlined casing shows corrosion along the sides and bottom edges. New steel is welded in.
Photograph: Darrin Crone

Four Cartazzi Spenser spring bottom plates are required we are using two old and two new.
Photograph: Darrin Crone

The lower cod's mouth door assembly being fitted after riveting and painting.
Photograph: Peter Brackstone

To work on the boiler safely we have had to invest in access equipment. It is all checked weekly following a controlled procedure.
Photograph: Richard Swales

The battery box is being fabricated.
Photograph: Richard Swales

The tender coal door catch after refurbishment.
Photograph: Darin Crone

The back corner cladding pieces have been repaired, fitted and painted in undercoat.
Photograph: Peter Brackstone

The tender gangway floorplate is in place.
Photograph: Richard Swales

The new Cartazzi bronze bearing casting, now being machined.
Photograph: Richard Swales

The projections from the back of the valve chest covers have to be the correct length to located against the valve liners.
Photograph: Richard Swales

One of the coupling rod oiling rings having it's oil retaining holes de-burred.
Photograph: Darrin Crone

The last cast iron steam pipe to be machined at contractors. The position of the datum for the holes to be drilled in the flange is being discussed.
Photograph: Darrin Crone

The wedges for the lower tender vestibule support brackets being skimmed to restore their shape.
Photograph: Darrin Crone

The left knuckle pin is fitted to the coupling rod.
Photograph: Darrin Crone

The right leading oiling ring is pressed onto the bearing that projects through the rod and into a recess in the rods.
Photograph: Richard Swales

The coal door frame has been partially riveted. The rivets being ground flush. The original small section of roof over the corridor is refurbished and fitted .
Photograph: Richard Swales

The new valve guide bolts have the hex head machined on an Elliott milling machine, indexed with a Fritz Werner dividing head.
Photograph: Darrin Crone

The new valve guide bolts have their overall lengths marked off on a flat surface with a vernier height gauge. 29 March 2020
Photograph: Darrin Crone

As the bolt heads won't pass through the headstock of the Colchester Student lathe, the ends have to be supported in a three point steady then machined to length. Photograph: Darrin Crone

The completed bolts with pin holes drilled, next to the old bolts.
Photograph: Darrin Crone

One of the knuckle pins on a Bridgeport milling machine having the cotter machined.
Photograph: Tony Bickerstaff

The keyway slot of the left knuckle pin is machined by indexing round by 90 degrees with a substantial rotary table.
Photograph: Tony Bickerstaff

Lubricator drive crank components
Photograph: SNGLT Engineering Team

Lubricator drive crank
Photograph: SNGLT Engineering Team

TPWS bell
Photograph: SNGLT Engineering Team

TLED spotlight unit
Photograph: SNGLT Engineering Team

New TPWS and OTMR battery box
Photograph: SNGLT Engineering Team

Cartazzi bearing casting
Photograph: SNGLT Engineering Team

Cartazzi bearing casting
Photograph: SNGLT Engineering Team

The new tender battery enclosure.
Photograph: Richard Hawkhead

The tender water gauge valve and new stainless steel adaptor
Photograph: Peter Slater

The AWS/TPWS sunflower unit used as a warning indicator and to acknowledge signals
Photograph: Mike Page

The middle big end test bush made to high accuracy and will be used to ensure the middle big end bearing is held securely in the rod.
Photograph: D Holmes

One of the handbrake link side plates being machined with a radius where the section thickness changes
Photograph: Darrin Crone

The handbrake side links and centre block trial assembled on dowel pins ready for final welding
Photograph: Darrin Crone

One of the new tender vestibule support rod packing pieces has been machined and is being drilled
Photograph: Darrin Cronw

One of the new blast pipe caps being machined with the use of a rotary table
Photograph: Tony Bickerstaff

Refurbished boiler pressure gauges.
Photograph: Darrin Crone

The devil is in the detail, individually made smoke box studs with drawing and material purchase order detail
Photograph: Darrin Crone

The re-metalled and machined middle piston valve tail rod bush
Photograph: Darrin Crone

The new and ex-service blast pipe caps, with a 7¼" gauge version
Photograph: Darrin Crone

Two new nuts made for the coupled wheel spring hangers to replace "odd" sized nuts. Now we only need one spanner to adjust the brakes instead of having to remember the odd ones!
Photograph: Darrin Crone

First day back in the workshop, our maximum permitted attendance is five. Our last day before lockout we had 16. It's very quiet.
Photograph: Richard Swales

We have set up our own "wash station" in the corner of the workshop. All we need now is to get the hot tap to work,
Photograph: Darrin Crone

The valve covers are fitted
Photograph: Richard Swales

An old tender dragbox bush and the last new one ready to go in. I suppose it was due a change.
Photograph: N Franklin

Two of the 4 new bushes now fitted in the tender dragbox. The side or safety link pins go through these bushes. The side links provide a backup connection between loco and tender if the main drawbar fails.
Photograph: N Franklin

Measurements have been taken of the Cartazzi horn gaps to enable liners to be specified.
Photograph: Richard Swales

With the valve cover on and the valve in place the offset dimensions can be taken.
Photograph: Richard Swales

The knuckle pin bushes are pressed in to the trailing coupling rods.
Photograph: Richard Swales

The loco brake gear is laid out and the rebushed links pinned up to check fit and dimensions taken for new pins.
Photograph: Darrin Crone

One of the refurbished lower vestibule support assemblies fitted with the new floorplate above.
Photograph: Darrin Crone

The new tender side link pins that will go through the new bushes. The one with the longer top goes through a longer hole in the cast iron balance weight. It gives me something to hold on to for removal. Photograph: Darrin Crone

Riveting the coal door frame on to the front plates of the tende.
Photograph: Peter Brackstone

An Engineering Team volunteer boring the new little end bushes.
Photograph: Richard Swales

The right coupling rods are lifted on to the crankpins.
Photograph: Richard Swales

The right coupling rods fitted and leading crankpin cap.
Photograph: Richard Swales

The ends of the new Cartazzi hangers have been slotted and the undercuts at the ends of the threaded section have been finished. Photograph: Darrin Crone

New brake pins freshly machined by a volunteer.
Photograph: Darrin Crone

A white-metalled crosshead being machined in the home workshop of one of our volunteers.
Photograph: Richard Swales

The right combination lever fitted to the radius rod, the machined valve crosshead in place on the valve spindle but not pinned in to the combination lever.
Photograph: Richard Swales

The middle cylinder steam pipes tried in place.
Photograph: Darrin Crone

The left side combination lever fitted to radius rod and valve crosshead being set up for mid gear position. Photograph: Richard Swales

New pipe end cones for the atomiser steam supply pipework.
Photograph: Darrin Crone

The new cast iron steam pipes that are fastened to the tops of the cylinders are fastened together and pressure tested.
Photograph: Darrin Crone

The CME ponders on the valve head positions on the spindle.
Photograph: Tont Bickerstaffe

One of the little end bushes during machining by one of our Engineering Team volunteers.
Photograph: Tont Bickerstaffe

The handbrake link being machined in a volunteer's workshop. Photograph: Richard Swales

The steam supply pipe to the air pump is pressure tested before final fitting to the loco.
Photograph: Darrin Crone

Not open to the public a view of the loco from the viewing gallery.
Photograph: Richard Swales

Also seen from the public gallery, the tender.
Photograph: Richard Swales

The new cast iron steam pipe in position with the ex-service steel pipe cut to fit.
Photograph: Richard Swales

The left lower combination lever and piston crosshead drop link pin holes are compared for alignment during fitting of the union link. Photograph: Richard Swales

Once cut and with the end flanges in position the cuts in the pipe are bridged to hold the pipes new shape.
Photograph: Richard Swales

The right side valve gear assembly with union link fitted.
Photograph: Richard Swales

The left union link being measured for twist.
Photograph: Richard Swales

The new handbrake link machined by Engineering Team volunteers with the ex-service behind.
Photograph: Richard Swales

The coach has arrived at contractors for the overhaul of the underframes.
Photograph: Darrin Crone

The new loco brakeshaft bearings during machining, with the same components in model form for a 7¼" A4.
Photograph: Darrin Crone

The new tender corridor canopy fitted. Original drawings were used to fabricate this part.
Photograph: Richard Swales

The two loco brakeshafts being rebushed.
Photograph: Richard Swales

The little end bearings being slotted for their oiling felts.
Photograph: Tony Bickerstaffe

One of the cast iron steam pipes being set up for drilling.
Photograph: Richard Swales

The coach has been lifted for the underneath of the coach and bogies to be thoroughly inspected.
Photograph: Richard Swales

Everything needs painting, and work proceeds on a little end keyway.
Photograph: Richard Swales

The ex-service cladding sheets with a new steel sheet being marked out and drilled.
Photograph: Richard Swales

One of the middle big end bearing half castings having the mating surface machined.
Photograph: Tony Bickerstaffe

After the faces are machined they are tinned with solder.
Photograph: Tony Bickerstaffe

After aligning the halves they are soldered together.
Photograph: Tony Bickerstaffe

The new cladding sheet being welded. In front the middle trailing valve cover waiting to be welded so that the end stop can be finished to the correct length.
Photograph: Richard Swales

Santa's leading artisan elf popped in to help with some pipework on his way to the North Pole.
Photograph: Richard Swales

The middle big end bearing halves soldered ready to go for machining.
Photograph: Darrin Crone

The new right leading boiler cladding panel in place.
Photograph: Darrin Crone

The right leading brakeshaft bearing in position.
Photograph: Darrin Crone

The leading left brakeshaft bearing housing is honed to remove taper and improve circularity for the fitting of the bearing.
Photograph: Tony Bickerstaffe

The little end bearings are keyed in to the connecting rods. New keys being ground to size.
Photograph: Tony Bickerstaffe