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D7629 AVR Detail
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The cylinder head has been removed, showing water damage
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Cylinder heads removed exposing damage
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The loco has two cracks (just visible), which date back into BR ownership.
It can be seen that the cracks were drilled to stop them - which has been successful. The cracks have not grown since this work was done in BR days. The bogie design suffered from specific weaknesses causing these cracks. |
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Shot showing electrical cubicle details.
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25265 and D7629 pose at Rothley, GCR
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Contractor John Robinson working to address the bodywork corrosion
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New bodywork platework.
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New bodywork platework.
There were corrosion holes in these locations.
Note the aperture cut for new bodyside steps, which John Robinson fabricated. |
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The failed turbo is removed from the loco
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A view of the turbo during dismantling (turbine end).
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Initially the turbo was subject to work at Rothley. This shows the unit partially dismantled.
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A view of the turbo shaft. The bearing is severely worn and the shaft (turbine end to right), shows severe heat damage
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Detail of severe damage to the turbo shaft (turbine end)
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Rebuilt turbo (Impeller end)
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Rebuilt turbo (turbine end).
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After a further failure, the turbo was sent to Marine Turbo Engineering at Birkenhead for a full overhaul. This view shows the unit after replacement
The shaft was found to be 26 grammes out of balance - a significant degree. |
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The team present after refitting the overhauled turbo to the loco.
Darren Fawcett, Dave Partner and Martin Clark. (Mark Fowler out of shot).
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The main and auxiliary generator after cleaning.
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No5 piston is removed.
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No5 piston emerges from the block
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No5 piston removal
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No5 piston craned clear of the block
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No5 piston emerging from the loco
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No6 fuel pump replaced with overhauled unit.
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The buffers had become weak and were replaced.
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The cleaned and treated block.
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Cleaned and painted block.
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No5 liner showing the failed topring.
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No5 liner topseal removed.
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No5 pot
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No5 liner removed.
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The head is replaced and shows transition seals (new).
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No5 topseal ring - corroded to total failure.
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Dave Partner and Darren Fawcett - both of whom gave significant help to get D7629 back into traffic.
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D7629 and D1705 on D7629's first test run at Rothley, GCR.
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Mark Fowler, next to D7629 on the occasion of the loco's first test-run.
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After it's move to Ruddington (GCRN), the opportunity was taken to bestow the loco with full yellow ends for a Diesel Gala.
The loco moved to GCRN (Ruddington) after two successful seasons at GCR |
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Full yellow ends being applied to D7629 at Ruddington
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