$8,867,806 and from Workshop Services $114,441 representing increases of 14.04%, 21.65% and 20.28% respectively compared with the previous year. The Nett Profit amounted to $2,490,143, an increase of $1,140,334 over the previous year.
32. Increases in fixed assets during the year included $599,238 for the installation of a new power signalling system between the University and Tai Po Kau Stations and $56,087 for the provision of additional workshop equipment. Various improvements to existing facilities such as strengthening of Bridge No. 20, extension of a fence at Sha Tin Station, provision of new nickel-cadmium batteries in carriages, etc. amounting to $406,128 were carried out during the year.
33. The Accounts and supporting data are published in Appendices I to V to this report.
MECHANICAL WORKSHOP
34. All locomotives, rolling stock, electrical and mechanical equip- ment, machinery and plant were maintained to a good standard during the year.
35. Locomotives. Forty-six 5,000 mile inspections, thirty-three 10,000 mile inspections, seven 30,000 mile inspections, six 60,000 mile inspections and two 720,000 mile inspections were performed on the nine diesel electric locomotives. Locomotives Nos. 53 and 55 had their main generator commutators ground, part of the control wiring replaced, traction motors overhauled and the liners, pistons and lower main bearings of the diesel engine renewed. All cylinder liners, pistons and lower liner inserts of locomotive No. 54 were renewed. Locomotive No. 51 had its wheels replaced, running gears overhauled and traction mo- tors reconditioned. The harmonic balancers of locomotives Nos. 53 and 55 were rebuilt with new spring packs. The high dispersancy oil recently adopted for diesel engine lubrication was found very satisfac- tory during the year. Although it is premature at this stage to gauge its effect on wear reduction, a moderate cost advantage was realized as this high dispersancy oil was found to have lasted longer before an oil change was required. Consequently savings resulting from lower consumption were more than sufficient to offset the higher price of the oil.
36. The availability factor of the diesel locomotives was 88.52% compared with 86.82% in the previous year. This was attributable to
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