BALANCER UNIT - J.4by observing alignment of the chalk marks.As a further check, observe that the single punchmark on the idler gear still registers between the twopunch marks on the balancer shaft gear, in alignmentwith the gear centres. Accuracy in timing the balancerunit to the engine is essential as an error will causeserious consequential damage to the engine.The ability to turn the engine over by hand is notnecessarily proof that the balancer unit is correctlytimed.Secure the balancer unit to the cylinder block withfour setscrews and washers, tightened to a torque of 36lbf ft (4,98 kgf m) - 49 Nm.After fitting the balancer unit to the cylinder blockand especially in the case where a new balancer unitframe has been incorporated,. check to see that there isclearance between the balancer unit frame and No. 1main bearing cap.Refit the sump in the normal manner, as describedin the relevant service literature.Running-InAfter renewing any parts, the balancer unit must becarefully run-in and this should be effected by firstlyrunning the engine at fast idle for a period of half anhour, followed by a further half hour at 1,000 rev/min.NOTEReplacement bushes are not servicedseparately for the idler gear. Areplacement idler gear, complete withpre-finished bush must be fitted.The stud which secures the idler gearand hub to the balancer frame isavailable as a spare part but need notbe removed from the balancer frameunless it requires replacing.
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