North Eastern Locomotive Preservation Group

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Q6 Blog

A record of events, activities and our work with the Q6



Wednesday 29th August 2018

Just three of us - Ian Pearson, Steve Hyman and myself - gathered at Grosmont yesterday on a grey morning.

After the usual cups of tea, and a chat with Barney Casey of the MPD about the jobs to be done, the three of us set to on the vacuum ejector down in the machine shop. The day was spent sorting out the various parts of the jigsaw puzzle that needs to be put back together with the aid of the railway equivalent of the garage mechanics manual, locating a replacement for the apparently missing clack, and lapping in the various valves. This took us all day, albeit a shorter one than normal, and, as requested by Barney, we left all the parts ready for Keith Pardy to put the ejector back together on Monday when he returns from his weeks holiday.

Elsewhere, the Q6 has now been moved back into the running shed, along with the elements. The top row of elements have now been installed (see photo), with a one eigth of an inch projection into the header, and Chris Kelly was working on their expansion (see photo) using the tube expanders from the upstairs store in Deviation Shed. Progress is slow, but Mark O'Brien is reportedly going to spend the weekend working on the elements, so hopefully completion of their installation and hydraulic testing of the header will be completed very soon.

 

Top row of elements in Q6 smokebox. - Chris Lawson

Top row of elements in Q6 smokebox - Chris Lawson

Earlier in the week, examination of the regulator pilot valve, preparatory to cleaning, found that it was cracked and then it broke in two (see photo). It was despatched to Lanes for a new one to be cast, which was done yesterday, and it is due to be returned to Grosmont today for machining ready for fitting. The other part of the regulator mechanism into which it slots was also being machined yesterday.

 

Q6 broken regulator pilot valve. - Barney Casey

 

Wednesday 22nd August 2018

A bright warm, but muggy, morning at Grosmont yesterday with Bill Dobson, Ian Pearson, Jon Bradley, Steve Hyman, Dave Donegan, Nigel Hall, Roy Marshall and myself. The usual cups of tea for starters, some having biscuits as well from the replacement biscuit tin following the sacrifice of the original one to tannin for the J27 on the Wensleydale!

 

Ian Pearson and Jon Bradley annealing the ends of the Q6 elements at Grosmont. 22 August 2018 - Chris Lawson

The header had been fitted and successfully hydrauliced on Tuesday, so the elements were annealed by Ian and Jon (see photo) and polished with emery paper while all the header holes were cleaned with the drill and flapper wheel. The snifting valve was fitted and also the valve that supplies steam to the vacuum ejector from the manifold. Last week it was intended to replace this valve, but Steve Hyman investigated the source of a new one, and found out that these valves are OK for both steam and water. So our old valve only required a new washer, which Steve made from material from James Walker called Chieftain X which met our specification, and the valve was fitted back on the Q6.

Lunch was had alfresco on the picnic benches outside Deviation Shed. After lunch, the top row of elements were placed into the flue tubes. Bill had to go up to Egton Show to do a presentation with the Goathland hunt, but left instructions to remove the blank from where the regulator fits the main steam pipe and fit the regulator. Having removed the blank we were told by Barney Casey that it should not be removed, nor the snifting valve blank which had been removed to fit the snifting valve fitted earlier during the morning. So the regulator blank was refitted and the snifting valve removed and its blank refitted. Then Chris Kelly and Barney struggled to get the elements to fit under the header and move them into their respective location. There was talk that they were too long but, after using a variety of bars and packing to no avail, the cavalry were brought up from the MPD, and with the involvement of more of the shed staff, eventually, by 4pm, two of the elements were successfully fitted into the header (see photos). Hopefully, all the remaining elements will be fitted in the next few days, a further hydraulic carried out, followed by another in house steam test before one for the boiler inspector. The major remaining job will then be the valve setting.

First two Q6 elements fitted to top row. 22 August 2018 - Ian Pearson

Top row Q6 elements with first two fitted. 22 August 2018 - Ian Pearson

Meanwhile, Steve stripped down the steam heat valve, as a new valve head had been made, but the seat inside looks slightly damaged and may have to be recut. I spent the day down in the MPD workshop, away from all this excitement, working on the vacuum ejector, cleaning the body and grinding in some of the valve heads. Nigel joined me later in the afternoon, and following a conversation with Keith Vardey (who was being filmed by Channel 5 machining the remetalled axle boxes for Sir Nigel Gresley, one of which will have to be remetalled), we decided it would be best for him to rebuild the ejector, as he took it apart originally, and would probably need to do so again to satisfy himself that we had put it back together properly!

 

Wednesday 15th August 2018

A warm but rather cloudy morning at Grosmont with a good turnout - Bill Dobson, Ian Pearson, Steve Hyman, Derek Shorten, Dave Donegan, Nigel Hall and myself, along with Tom Noble who was on cleaning duties at the MPD.

As usual, cups of tea all round, and a new stock of chocolate digestives to keep us going. Then we found out that the Q6 had failed a steam test for the second time. On Tuesday, with about 40lbs on the clock, 6 small tubes were found to be leaking. These were expanded at 5am on Wednesday morning and the Q6 then lit up again. By late morning, it had 100lbs of steam on but when the boilersmith checked the firebox, 3 small tubes on the left hand side of the box were leaking, so the fire was thrown out again and the engine left to cool down. The plan then was for Chris Kelly, the boilersmith, to go in at 5am this morning and expand the leaking tubes and then have another go . At the time of writing I have not heard whether that was successful.

As a result, Derek and Nigel set about cleaning and painting the valve covers, while the rest of us worked on the ejector which had been left in the machine shop several months ago, on the understanding that the shed fitters would refurbish it. But now we are undertaking this job. So yesterday the body of the ejector was gritblasted and NDT'd by myself, as well as some of the other small components. Dave stripped the chamber side drain part of the ejector, gritblasted it cleaned it out and reassembled it, and then I did an NDT on it. All NDT inspection was OK and photos taken for the MPD records. In the cab, the valve that supplies steam to the ejector from the manifold has now been removed as it is a water valve, and a blank has been fitted for the time being. The old valve has been taken away by Steve Hyman in order to get a new steam valve replacement.

Lunch today was in Deviation Shed with quite a lot of visitors around and money going into the repositioned donations box, to make it more obvious .

Some more tannin was requested for the J27 at the Wensleydale Railway, and a large bag full has been sent with Nigel, who was going to deliver it today. A request from the Wensleydale Railway to extend the stay of the J27 is being considered. To fit in with a 28 day wash out, and its motive power requirements in early September, the NYMR has agreed that it could stay to operate up to and including Friday 31 August, with it returning to New Bridge on 3/4 September. However, a final decision is dependent on whether the necessary crewing can be arranged, and Richard Pearson is now pursuing that with the Wensleydale Railway.

 

Wednesday 8th August 2018

A fine cooler day at Grosmont yesterday with Bill Dobson, Ian Pearson, Nigel Hall, Derek Shorten and myself. Bryan Orange and JV Luke Perry were also present at the end of their Deviation Shed holiday, and were working on the emergency lighting.

Usual cups of tea all round then thoughts on what to do! The loco was down at the MPD on No 4 road where there is no pit, and was having the 8 header studs drilled out due to some thread damage and to make a better access to expand the ring into the main steam pipe. The large tube expander required for that job arrived from LNWR Crewe in the morning, and is expected to be carried out today. With the replacement of the studs, an internal hydraulic could be carried tomorrow, and if all is well, the boiler inspector hydraulic early next week. In preparation, a couple of leaking valves in the cab were attended to by Bill and myself - the steam shut off valve to the vacuum ejector and the steam heat valve. The steam shut off valve will need replacing as it is not suitable for steam operation. It appears to be a water valve but has been on the loco for some years!

 

The new tap boxes - Ian Pearson

The rest of the team set about sorting out all our taps. These had been thrown in a box for many years, but now they are all separated into containers which have been attached to the south end workshop wall, with the boxes marked accordingly W (Whitworth), BSF (British Standard Fine) and so on (see photo ). This job took up most of the day but the work bench is looking a lot tidier at that end of the workshop. Ian also asks if anyone can identify a copper ring which was found when clearing the bench (see photo). I also carried out the monthly defibrillator check, much to the interest of our many visitors.

Lunch was had in Deviation Shed with Derek brewing the tea and quite a lot of visitors around. At the end of the day the pit pump would not work although it had been operating fine during the morning, clearing water that had been drained from 825's boiler. Bryan checked round the electrics and found a loose wire in the switch panel which he repaired and it is now working OK. Nigel acquired one of our treasured biscuit tins, which was filled with tannin for use in the water treatment for the J27. He delivered it to the Wensleydale Railway last night.

The steam crane was in action lifting the boiler off Green Knight No 75029 which attracted much visitor attention, and was extensively filmed by the Channel 5 documentary team. The boiler is now down at the boiler shop waiting for assessment and overhaul. The B1 was carrying a wreath in memory of Dave Fowler, the B1 Trust Secretary, who has died from stomach cancer. The work on 825's boiler is ongoing, with continuing problems in getting a satisfactory seal between the J pipe and steam pipe.

There will be no working party this Saturday. The next working Party will be on Wednesday 15 August, by when a successful hydraulic test could clear the way for the refitting of the header and the installation of the new flues.

Last minute news from Leeming Bar. The J27 has suffered a broken engine spring and been stopped this morning. Tim Williamson is going over to Grosmont to collect two spares and the engine will hopefully be back in traffic tomorrow.

 

Wednesday 1st August 2018 (Yorkshire Day)

Apologies for the absence of recent Q6 updates, but Bill reports that it has been a fairly frenetic period with activity on nearly all days.

Wednesday 25th started with Paul Jamieson, Roy Marshall, Dave Donegan and Bill Dobson at Deviation Shed. The prime task was to remove the blanks for safety valves and whistle, and then fit them, together with new gaskets. Then the dome cover was removed, and the rubber gasket on the J-pipe blank was replaced by a steam joint. This will enable the boiler to be steamed shortly after hydraulic testing. That evening the boiler was filled with water. The following morning a hydraulic test was done, and a small leak was found on the copper firebox door plate along the line of the weld done in 2014 at Crewe. A dye penetration test was carried out and a hairline crack, about 1 inch long, was revealed. After consultation with the boiler inspector, Mark O'Brien arranged for Derek Brewster, a copper welder, to travel down from Inverness on Friday. A high power welding set and a bottle of helium gas was also organised by Mark on Friday. Mark carried out preparation work, and the weld was done early Saturday morning. On the Sunday some weeping small tubes were expanded, and the boiler refilled. Early Monday morning (30 July), a further hydraulic showed further leaking along the line of the old weld, and Derek returned and carried out further welding, making a total length of about 9 inches. Another hydraulic test was carried out to 270psi with no more leaks in the region of the old welding. However, a small leak was observed where the main copper internal steam pipe comes through the front tubeplate. Once this is eliminated the boiler should be ready for the boiler inspector to witness the formal hydraulic test, which will start the "clock" on the 10 year inspection period.

On 1 August, Roy Marshall, Nigel Hall, Bill Dobson and myself were present. Unfortunately Mark O'Brien was not at work that day, so the planned work on the copper internal steam pipe - the removal of the inside steel ring to enable a new tapered one to be machined - could not be carried out. So, apart from a long lunch in the sunshine at the picnic bench overlooking the MPD, and a number of discussions with NYMR management about progressing the Q6 work, the final jobs of the week were to refit the regulator handle, and continue removing concrete from the smokebox, both of which Roy tackled with his customary enthusiasm!

Elsewhere, the missing drawbar spanner for the J27 was found and Nigel has taken it to reunite with the J27 this week. In my absence in Australia, the outstanding work on the stove chimney and its roof access has been completed, and the Grosmont external end of Deviation Shed now proudly shows its name.

The new stove chimney - Nigel Hall

With completion of the stay work, the boiler for the S15 has been filled with water and some weeping stays dealt with, but it is also suffering the same problem as the Q6 with its copper internal steam pipe. Assuming that can be resolved in the same way as that for the Q6, it is hoped to carry out an internal hydraulic test next week. The new cylinder block for No 29 has been delivered from the machine shop on Teesside and trial fitted. Some work is required to build up and match the securing holes in the frames to the new block, but that should be finally fitted in the next week or so. Outside, No 75029 has been brought down from the backfield and the cab was being removed on Wednesday prior to a boiler lift so that a full assessment of the required work can be made.

 

Wednesday 18th July 2018

Bill reports that yesterday was excellent weather-wise, but the noise pollution was severe, with needlgunning, beading over and stay head forming going on in all parts of the site. The Hartlepool Mafia was out in force, with Roy Marshall, Dave Donegan and Dave Whitfield in attendance, supplemented by Derek Shorten and Bill himself. Derek spent much of the day doing a much-needed tidy up of the workshop, while Dave Whitfield put together the toolkit required for the J27's trip to the Wensleydale Railway, and loaded it onto the back of the tender. The J27 is currently on washout, and rostered to work a train to Pickering on Monday. Bill is to split the engine /tender on Tuesday at New Bridge, but could do with a volunteer to assist. Please contact him directly if you are able to help.

On the Q6 itself, the good news is that the final stages of beading over the tubes are underway, with a boiler hydraulic test planned for tomorrow, and to be witnessed by the Insurance Company boiler inspector on Monday. The final preparation of the header was successful, and it is now ready to fit to the boiler immediately after the hydraulic exam on Monday.

If the hydraulic is successful, this will release much work, and working parties will be back to Wednesdays and Saturdays till the jobs are complete. In the meantime, no working party this Saturday, with the next one on Wednesday 25 July (so the Q6 will not, after all, be in traffic by the time of my return from Australia!)

 

Wednesday 11th July 2018

Bill Dobson reports that, as it was known that the NYMR boiler department retubing work was on-going, a "lean and mean" working party was arranged in view of the limited amount of work that could be done on the Q6. Dave Donegan, Roy Marshall and Bill assembled and the plan was to prepare the header for fitting to the boiler and to go over the engine with Barney to check things such as cotters etc., ie a mini FTR exam. However, this plan had to be aborted as Barney was called to Whitby to sort out failures of both steam and diesel engines, the former (Repton) with an AWS fault and the latter with a pressure switch fault.

When the header is fitted to the tubeplate we want to hydraulic the header and internal steam pipe in order to be assured that the potentially troublesome joint between the header and tubeplate is sound. This will require a different method of blanking the element holes due to limited access . The header was moved from Deviation Shed down to outside the boiler shop. The lens joints for the smokebox steam pipes were grit blasted, and a new joint for the ejector exhaust was made. All the gauges in the cab were connected up.

The last flue tube is now fitted and the small tubes are being expanded in the fire box. Once that work is completed, a hydraulic test will be arranged, and then that will release more work to finish off the engine. It seems a long time since the 19th of March and not long to 23 July.

 

Wednesday 4th July 2018

In my absence in Australia (where it is bright and sunny in a comfortable 19C - it is their winter after all, but in spite of that it is forecast to reach 24C today), Ian reports a rather dull cooler morning at Grosmont yesterday, but by lunch time it was getting warmer and then, after lunch, the sun shone with temperatures up in the lower 20's! Only Bill and Gordon Wells were with Ian, and he washed up all the dirty mugs of which there were quite a few! Bill took the bottles down to the MPD for water - perhaps we need to try and get our own supply in Deviation Shed? Then time for the usual cuppa. No more mice to report.

William and Martin were working again on the S15 boiler, and the French exchange student was needle gunning the bunker on Lucie. Gordon fitted a new light fitting above the fridge area with a new fluorescent tube. Ian fitted and secured the right hand side injector overflow pipe. Bill and Ian secured and split pinned both bottom slide bars, and Bill also split pinned the left hand side top slide bar. Bill fitted the vacuum gauge in the cab.

Lunch was had alfresco in the picnic area near Deviation Shed, as it was still a little dull but warm. Slow progress with the flues and there are 7 still to fit on the top row. All the jobs the team could do were done, so an early finish by 16.00 hrs. The regulator handle has been left for next week.

Not as many people as last week round the Shed today but still a few. A Class 20 diesel loco arrived from New Bridge in the afternoon under its own power - 20127, named Sir John Betjeman, in London Underground maroon livery. Another Class 20 is due today (Thursday). Both are required to increase resilience of the service if steam has to be taken off because of the fire risk. The J27 left on the 1230 from Grosmont yesterday, after the right hand tender side was cleaned at the platform by the crew to get rid of a long white streaky deposit.

The refurbished steam brake for the J72 has been delivered to Deviation Shed by Steve Andrews and Fred has been informed. Bill is taking it to the Committee meeting on Monday for Nigel to take to Hopetown.

No Working Party this Saturday - enjoy the sunshine. Next Working Party will be Wednesday 11th July.

 

Wednesday 27th June 2018

Not a lot of progress to report on this hot sweltering day, with Ian Pearson, Derek Shorten and myself in attendance - along with a mouse in the trap, the first in a long time. After the usual cuppa with our Essex loco friends, William Parrish and Martin Ashburner, I rubbed down and gave the regulator handle a coat of red paint. It will need a light rub down and probably another couple of coats. Interestingly, the regulator handle is stamped up as being from (6)3398, built at Darlington in the same batch as 63395 in December 1918, and withdrawn in October 1965.

Derek washed up all the dirty cups, made us more tea, and also started to sort out the metal lockers and tidy the work bench. Ian in the meantime borrowed the MPD's metal thickness tester for the main steam pipes. Just as he was about to change the batteries for some he had brought from home, William Parrish said we could borrow his tester, which was in better condition than the Railway's. So Ian measured both left and right steam pipes and marked the thicknesses on the pipes and also logged them down for Bill to scrutinize.

As it was so hot, lunch was had in Deviation Shed being a little cooler, with quite a lot of visitors and money going in the box. Interestingly, following the improved signage organised by Bryan Orange, a common question was 'Why Deviation Shed?'. Whilst there are now photos of the old Deviation Signal Box on the wall, it has been suggested to Bryan that a map of the area showing the Signal box and old track layout, with the Shed superimposed, would be a useful addition to the site interpretation. We also had a number of visits from individuals who were carrying out an electrical installation check of the MPD site (including Deviation Shed) on behalf of the NYMR. One immediate consequence of this was that the light fitting above the tea point in the workshop fell apart and the tube broke. Bryan has now arranged for it to be replaced on Monday, so we will not be tea making in the dark.

On the locomotive itself, only 12 of the flue tubes have been fitted into the fire box tube plate to date. Because of apparent variations in the tubeplate thickness, it is proving difficult to get some of them fitted with sufficient tube exposed for expansion at the firebox end. Some further machining may prove necessary. The current heatwave is also not helping what is a very strenuous job in screwing in the tubes, not assisted either by finding that, after all the effort, they have to be taken out again. However, they are pressing on. No new date has been fixed for the hydraulic, but the boiler inspector has said he has flexibility in his diary and can come over at relatively short notice. The target date of return to service by 23 July remains! The repaired vacuum gauge has been returned and is ready for fitting, and Paul Hutchinson has returned the Q6 whistle after refurbishment. Both are in the workshop. Ian was just about to start work tightening up the injector overflow pipe when he was commandeered to drive the 08 Shunter and rescue the B1 and its 7 coach train from Green End and bring it back to Grosmont. It had slipped to a stand due to oil contamination on the rail from the Class 37 which had been towed earlier by the Class 26 to Pickering for repairs (the J27, with Terry Newman on the footplate as inspector, managed to get through with its 5 coaches in spite of the oil on the track). While Ian slaved away on the shunter, as the stock also had to be moved around at Grosmont, Derek and I decided there was little more we could do in the absence of the RO, so had an early finish.

 

Wednesday 20th June 2018

It was warm and breezy with a grey sky and a few scattered showers early on at Grosmont on Wednesday, with Bill Dobson, Jon Bradley, Nigel Bill, Roy Marshall, Ian Pearson, Derek Shorten and myself. Cups of tea all round first, then Derek who it was good to see again, set about giving our cups and trays a good cleaning, after telling us off for not keeping them up to his usual standard! We even bought Domestos and scouring pads by way of penance, so all our cups and spoons are ultra clean once more.

After consultation and inspection of the big end bearings with the shed staff, it was decided to shim the front part of the left hand big end to allow a flush fit of the taper pin so the cotter pin would fit securely. A 20 thou shim was made and fitted, the taper pin was inserted, and, when knocked in, the slot for the locking cotter was in the correct position so that was fitted and split pinned. The right hand side didn't require any extra shims so, again, the taper pin was inserted and the locking cotter fitted and split pinned. Both big end nuts were fitted and taper pinned. The mechanical lubricator drive rod was also fitted and secured. The left hand bottom slide bar was secured and pinned at the front end, but the rear still require tightening and pinning. The right hand side bottom slide bar also requires checking out for tightness and pinning.

Lunch was held in Deviation Shed as it looked as if it was going to rain - but it didn't! A check was done on measuring the tender height against the loco and was found to be higher on the right hand side. In the boiler, all the flue tubes have been found to need some machining to provide sufficient for expanding at the firebox end. That machining has now been completed, but the delay while this was done means that the hydraulic planned for 26 June has had to be postponed. Efforts are now being made to reschedule that for a week later and we have been told that completion and return to operation by the start of the Gold peak season timetable on 23 July is still perfectly achievable. In the meantime, six flues have been installed, and expansion of the small tubes at the firebox end has been successfully completed.

After unexpectedly being in service on Wednesday, the J27 arrived on shed about 15.45 and was disposed by Ian and Jon with help from Mark O' Brien when the rocking grate jammed, due to the presence of what looked like limestone rocks present in the current coal deliveries. Eventually the rocks had to be knocked out with a large bar with a chisel end and the grate levelled and secured. As the rest of the planned cleaning team had already had to leave, Bill, Derek, Nigel,and Jon set about cleaning the wheels and below the running plate to give a start for the next day's special (which turned out to be an extra special day in glorious weather with the J27 acquitting itself well, thanks in no small measure to the skill of Terry Newman and Jon Bradley on the footplate).

There will be no working party this Saturday. The next one will be on Wednesday 27 June, when we plan a workshop tidy up plus completion of a few little jobs on Q6.

 


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