Today the viaduct forms the main attraction of a state park. Jack Boucher, HAER Collection The first viaduct of iron in the USA was designed by Albert Fink for the Baltimore & Ohio Railroad over Tray Run in the Cheat River valley in (West) Virginia, a remote, wild, yet picturesque site in the wilderness. Dating from 1853, it was a series of inclined cast-iron columns resting on stone pedestals connected at the top by cast-iron arches, the whole system braced by wrought-iron ties. Examples surviving today in North America include the Kinzua Viaduct (1900) on the former Erie Railroad in Pennsylvania (Figure 15), and the Lethbridge Viaduct (1909) on the Canadian Pacific in Alberta, composed of alternating 67ft (20m) trestles and 100ft (30m) girders, at 5327ft (1624m) long the longest and heaviest in the world. The Tunkhannock Viaduct (1915), 240ft high (73m) by
On HCS engines with M11 necked-shank cylinder head bolts there are three tightening stages. 28 Refit the pushrods in their original order. 29 Lower the rocker shaft assembly into position, making sure that the rocker adjusting screws engage in the sockets at the ends of the pushrods. 30 Screw in the rocker pedestal bolts finger tight. At this stage, some of the rocker arms will be applying pressure to the ends of the valve stems and some of the rocker pedestals 5.6a Sump gasket fitting details at timing 5.6b Fitting the sump gasket sealing strips will not be in contact with the cylinder head. cover end (A) and flywheel end (B) to overlap the tabs on the gasket The pedestals will be pulled down however 2 Refer to Chapter 5, Part A and remove the when the bolts are tightened to the specified starter motor. 6 Rocker gear - dismantling and
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