Workshop Overhaul Standard Specification
Combustion Heater
Smith

This is the document that works would have used when overhauling heaters. It is quite technical, using test equipment not available to most preservationists, but still a very useful document.

It's dated July 1987, and there's also some revised pages dated March 1988 listed. These pages would have been inserted into the original document, and in most cases only one side would be revised but the reverse had to be included. This WOSS is an updated version of the CEPS 24,and some of the diagrams will be recognisable from the Smiths Spare Parts Manual.

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