4in Foster Retube

📍Flash back to last year when one of our club members engines underwent a full retube.

The tubes removed had seen the owner many years of service attending rallies up and down the country.🇬🇧

There are several methods of tube removal, the most common being either a slide hammer or a hydraulic puller, the owner in this instance opted for the least labour intensive option of the hydraulic puller.💪💪

Once the tubes were removed it allowed for a more detailed look inside the boiler which isnt always possible with the tubes in situ. 👀

After several cleaning operations inside the boiler, the tubes were machined to length prior installation.

The tubes were expanded at either end before undergoing a hydraulic test to prove their successful installation.

This will see now see the owner many years of future steaming 👍

Hydraulic ram at start of a pull
Hydraulic ram towards end of a pull
Tubes removed, some pin holes evident. The tubes towards the bottom of the boiler were in considerably better condition than those towards the top of the boiler.
Some tubes sheared off leaving these items to be removed from the tube plate by hand
Great opportunity to check tube plate and internal of barrel
Front tube plate
New A179 tubes machined to length ready for fitting
Tube expander in action, plenty of oil was key to this operation
New tubes fitted and expanded

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