Update Spring 04

Home

This view shows the two valves and the two retaining springs removed from the casting behind them, the label identifies the valve from the exhaust port, it is essential that each valve goes back into its respective port. Prior to the lapping of the seats, the valve bore is checked for size and ovality and if ok then we proceed with lapping the seats in.

Once steam cleaned the heads are taken into the workshop at Toddington for dismantling. This view shows our technical officer (Head of Diesel Department), Mr Paul Good, instructing Tom Cullimore on how to dismantle the valves from the body using an adapter plate, which forces the springs down enabling the tapered cotter sleeves to be removed. Once this is done the head is placed on the workshop bench for attention.

With the locomotives ETH room more or less now complete (just the outstanding resistor frame to fit) attention is turned to the power unit. With our advisor, Mr Steve Madge, pointing us in the direction of what to do first, this view shows the first 4 heads being steam cleaned prior to dismantling and relapping of the valve seats. Also in the view are the coolant pipes, also steam cleaned.

This view shows two of our coolant pipes being overhauled in our workshop van. These have since been repainted. Most of the coolant pipes have now been completed and are going to be removed from site for safe storage. We would like to thank the people mentioned in the captions and also the 'Brush Type 4 Fund' with their assistance in this part of the operation. Our next up-date will have views of the loco with its refurbished cab and the refitting of the ETH section roof. (Mike Pember April 2004)