Summarised Details as released in our October 2006 Newsletter
33 063 (R.J.Mitchell) : The floating end ‘O’ rings on oil heat exchangers become hard over time so we sourced some new ones and changed these over one day. The effort in getting the sizes paid off in the end, as they were had for significantly less than if we’d stuck with the original supplier. The tube bundle was in generally quite good condition, only a few tubes were blocked with calcium deposits so it was not necessary to withdraw the complete bundle for inspection.
Radiator Tank : The gauge has tended to stick and has been removed twice to free it up. This is a simple mechanical device with the float driving a cog wheel so any debris will stop the movement. The internal condition of the tank was best described as medium with large corrosion blisters on the bottom. At some stage it will be necessary to do what the Bo’ness guys have done on their 26/27 and renew the tanks.
Gauges : the paint has been lifted off the gauge board and ‘brassed’ up together with any brass rimmed gauge in the cabs. It does look a lot better.
|33063 : The brass rims on the gauges have been revealed after the removal of several layers of B.R.- applied paint, Sat.28th October 2006 [Photo B.Thomas].|
Hydrostatic Cooling Oil System : It was reported during the August gala that the header tank was running out of oil and indeed 63 tried to turn herself into a steam engine on one trip as the radiator boiled up. The test valve on the oil pump leak off line was found turned to the wrong position so the pump leak off oil was being forced into the sump rather than return to the header tank. With a leak off rate of up to 0.9 litres per minute at full revs you can see why the fan stopped as the oil ran out.
Electrics : one of our electrical guys has hopefully solved the problem of the engine shutting down when wheel slip occurs. This was diagnosed as HR ‘mushroom’ contacts and distorted arms on the wheel slip relays (33065 also has distorted wheel slip relay arms).
Brushes in Compressor/Blower motor/Triple pump and both exhausters checked for length and are all ok but a couple in blower motor getting to limit.
Planned work over winter : The plan is to paint the pipes in the correct colours and finish the engine room, clean and paint. A slight knock around the No 1 cylinder head area has been looked into. A peek into the crankcase didn’t reveal anything to be visually amiss and the oil analysis is good so it’s thought we don’t have any bearing problems. Investigations continue.
Outside of the engineroom, attention is required to a cab roof radio pod leak, complete the cab floors and think about the guttering.
|33063 and 33065 in the loop at Tunbridge Wells West during the Spa VR’s Summer Diesel Gala, 5th August 2006 [Photo D.Robinson].|
33 065 (Sealion) : The locomotive is fully operational (at the time of writing) but has a number of minor electrical faults which are being looked at together with battery issues. In addition we still need to change a cylinder head later this year. It is likely that the locomotive will be stopped after the 2006 season for lengthy refurbishment.
[N.B. 33065 WAS stopped after the October Gala and is sidelined pending a detailed overhaul; unlikely to reappear again until sometime in 2008].
|33065 takes the 12:15 out from Tunbridge Wells West, heading for Groombridge, during the Spa V.R.’s Mainline Diesel Gala, Fri.27th October 2006 [Photo B.Thomas].|