Norton Service Release Database N3/16

SERVICE RELEASE N3/16

NATURE OF RELEASE: Oil in timing case MODELS AFFECTED: 1972 DISTRIBUTION: Worldwide (General Distribution) EXPLANATION: Since the introduction of the latest crankcases and roller timing side main bearing the initial flow of oil passing into the timing case has diminished, and in consequence when a new or rebuilt 1972 engine is run for the first time, oil must be added from an outside source to prevent the-timing gear running dry initially. After the engine has run for some minutes, oil will automatically accumulate in the case to lubricate the timing chain and pinions. Thereafter there is no necessity to add lubricant manually unless the cover is once again removed.   ACTION: Prior to running a 1972 type engine for the first time, or after service work when the timing cover has been removed, pour oil into the inlet rocker box till full, then replace the rocker cover. Oil will then drain gradually through the rocker box drain hole into the timing case, thus providing initial lubrication for the timing gear. June 1972 Norton Villiers Canada Limited