8)
With a 24mm spanner/socket undo the
two nylon nuts and washers that are
holding the blade in place. Remove both
blade bolts from the blade.
9)
Grasp the blade by the flat edges while
wearing heavy duty gloves.
10) Withdraw the blade from the rotor.
11) Clean the back surface of the blade,
blade bolts and blade area of the rotor
before reseating blades. The blades must
not have any material underneath them
when tightened. If they are not flat and
tight they will become loose very
quickly.
12) Reassemble the blades, bolts, washers
and nuts in the order shown in the
diagram above. Use only genuine nuts
and washers, as they are of a higher
grade than normally stocked at fastener
factories. Failure to use the appropriate
grade nuts or washers may result in
damage, injury or death. The use of
genuine blades and bolts is
recommended.
13) Apply a smear of anti seize compound
(copper ease) to the bolt threads and
back face of the nuts. Do not apply
copper grease onto the counter bore
faces of the blades or bolts.
14) A calibrated torque wrench must be
used to tighten the bolts to a torque
setting of 125 Ibs ft (170 Nm).
15) Remove lock pin, rotate rotor to next
blade then replace lock pin and repeat
steps 7 - 14.
16) Refit access hatch.
17) Refit the nuts and tighten to 45lb/ft.
18) Refit battery leads.