BALANCER UNIT - J.4
by observing alignment of the chalk marks.
As a further check, observe that the single punch
mark on the idler gear still registers between the two
punch marks on the balancer shaft gear, in alignment
with the gear centres. Accuracy in timing the balancer
unit to the engine is essential as an error will cause
serious consequential damage to the engine.
The ability to turn the engine over by hand is not
necessarily proof that the balancer unit is correctly
timed.
Secure the balancer unit to the cylinder block with
four setscrews and washers, tightened to a torque of 36
lbf ft (4,98 kgf m) - 49 Nm.
After fitting the balancer unit to the cylinder block
and especially in the case where a new balancer unit
frame has been incorporated,. check to see that there is
clearance between the balancer unit frame and No. 1
main bearing cap.
Refit the sump in the normal manner, as described
in the relevant service literature.
Running-In
After renewing any parts, the balancer unit must be
carefully run-in and this should be effected by firstly
running the engine at fast idle for a period of half an
hour, followed by a further half hour at 1,000 rev/min.
NOTE
Replacement bushes are not serviced
separately for the idler gear. A
replacement idler gear, complete with
pre-finished bush must be fitted.
The stud which secures the idler gear
and hub to the balancer frame is
available as a spare part but need not
be removed from the balancer frame
unless it requires replacing.
