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Belt Pulley Alignment
The belt pulleys are secured in position on their shafts by taperlock bushings; when
replacing pulleys the lower pulley must be fitted to the rotor shaft first, the pulley and
taperlock should be located as far as possible onto the shaft at a minimal distance from
casing components and secured with the taperlock.
The upper pulley and taperlock should be subsequently fitted to the drive shaft and
positioned in-line with the lower pulley; a suitable straight edge tool placed against the
faces of both pulleys should be used to set and confirm alignment.
When the pulleys have been correctly installed the taperlocks must be fully tightened and
torqued, refer to taperlock tightening procedure below.
Taperlocks
The pulley taperlocks must be tightened and torqued to 17Nm (12.5 ft-lb). Tighten the 6
Allen headed bolts using a criss-cross tightening sequence to the torque figure stated;
repeat the tightening procedure twice on each taperlock.
Taperlock locations Taperlock Tightening Sequence
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