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Routine Maintenance Repays Australian Operator of Leylarids

8th September 1939
Page 45
Page 45, 8th September 1939 — Routine Maintenance Repays Australian Operator of Leylarids
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BY dint of painstaking maintenance methods, based strictly on mileage, the Metropolitan Omnibus Co., Ltd., of Perth, Australia, is acquiring a reputation for getting long life from its vehicles. The company, operating in the Perth district and over a 15-mile run to Fremantle, is one of the biggest concerns of its kind in the Southern hemisphere. Already its 20 Leyland Lion oil-engined buses are approaching the 200,000-mile mark, and several have exceeded it.

This is how it is none in the company's own words :-" Nozzles are cleaned every 3,000 miles and heads are removed and valves ground-in at '24,000 miles. At 48,000 miles, pistons are removed and new rings fitted. This procedure is repeated until the unit has done 144,000 miles, when it is taken down for a general overhaul. Almost without exception, we have found the bearings to be in perfect condition after this mileage. Cylinder wear is about 0.015 in. to 0.018 in. at 144,000 miles. The engines are then rebored and fitted with 0.025-in, oversize pistons. In one or two instances the wear has been

greater and we have had to fit sleeves."

Petrol engines are serviced to much the same schedule, except that the general overhaul is carried out somewhat earlier-at 110,000 miles.

That the maintenance system is art efficient one, and that the petrol machines have set an extremely high standard of longevity, is evidenced by the mileage figures of the company's fleet of Leyland Lioness and Lion machines. Nine of the former and 10 of the latter have between them reached the astonishing average figure of 432,261 miles each. The biggest figure, 498,209, has been achieved by a Lioness, whilst the "baby" of the fleet is a Lion, with only 318,232 miles to its credit?

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Locations: Perth

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