The distributor drive cross-shaft with the old bushes lined up in front. This picture shows the 'B' side spacer on the shaft with its new bush inserted. The two 'A' side bushes are on the shaft awaiting the return of the block from engineering work. When assembled the two oil holes in the bushes are offset from the feed holes in the spacer. The spacer has a groove machined beneath the bush, in line with the feed holes, through which the oil is gravity fed.
The shaft was skimmed true for the whole length on the 'A' side to allow the new inner bush to be fitted whilst the 'B' side was only relieved to the depth of its outer bush. The new bushes were bored to fit the new diameters giving .001" diametric clearance - a guess as there were no tolerances stated on the General Arrangement drawings.
One of the old cross-shaft bushes. 'A' shows the two axial oil grooves that are fed via the two supply holes (one of which is shown at 'B'). All of these holes and channels, including those in the spacers, are readily blocked by dirty oil - so be warned. The only way to clean them is to knock the bushes out with a soft metal drift as flushing will not penetrate the sediment.
Radial scoring can be seen inside this bush; wear had increases the bore elliptically by about .006" as well as reducing the shaft by .004".