Foreword
This workshop manual has been compiled for use in
conjunction with normal workshop practice. Mention of
certain accepted practices. therefore. has been
purposely omitted in order to avoid
repetition.
Reference to renewing joints and cleaning off joint
faces, has to a great extent been omitted from the text, it
being understood that this will be carried out where
applicable.
Similarly, it is understood that in reassembly and
inspection, all parts are to be thoroughly
cleaned and where present, burrs and scale are to be
removed.
It follows that any open ports of high precision
components, e.g., fuel injection equipment, exposed by
dismantling. will be blanked off until reassembled, to
prevent the ingress of foreign matter.
When fitting setscrews into "through" holes into the
interior of the engine. a suitable sealant should be used.
Engine Number
Three systems of engine numbering have been
used.
On very early engines. the serial number consisted
of seven digits commencing with the figure. 4.
With later engines. the number consisted of figures
and letters, e.g.. 236:251. The first three figures
represent the capacity of the engine in
cubic inches. the letter "1 " denotes the online was built
in the United Kingdom and the last group of figures
comprises the engine serial number,
On current engines. the number can consist or up to
fifteen letters and figures a typical number being
LD14739U510336D and will be found stamped on the
cylinder block just above the fuel pump.
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