External Alternator (Optional On 912/914 Series); 1) Vbelt Pulley Assembly; 2) Alternator Assembly - Rotax 912 Series Maintenance Manual

3.23) External alternator (optional on 912/914 Series)

3.23.1) Vbelt pulley assembly

3.23.2) Alternator assembly

Effectivity 912/914 Series
Edition 1 / Rev. 0
BRP-Rotax
Maintenance Manual
See Fig. 74-38.
Slide the pulley (1) fully over the propeller flange (2) and insert the V-
belt 9.5x675 (3) loosely in the Vbelt pulley.
Insert the two pulley carriers (4) with the centering (5) facing the inside
(6) of the propeller flange and loosely preassemble the propeller with
the two pulley carriers.
Push the Vbelt pulley (1) onto the two Vbelt pulley carriers (4) and
attach with the 8 allen screws M5x16 (7) with lock washer (8).
■ CAUTION:
The two pulley carriers must be positioned precisely
with the centering exactly on the inside (6) of the
propeller flange.
Tighten the propeller with the preassembled pulley to the tightening
torque recommended by the propeller manufacturer.
See Fig. 74-38.
Loosely preassemble the alternator bracket (9) on the gearbox housing
with the two allen screws (10) M8x20 with high tension lock washer (11)
VHZ 8. To attach the alternator support (12), the two allen screws
M6x45 (13) with lock washers A6 are unscrewed from the propeller
gearbox and then retightened to also hold the alternator support (12).
Push the alternator (15) into the bracket (16) of the alternator bracket,
distance with the washer (17) 10.1/20/0.5 and first loosely attach the
alternator with the hex. screw (18) M10x45.
Now the two allen screws (10) M8 can be tightened to 22 Nm (195 in.lb)
and the two allen screws (13) M6 to 10 Nm (90 in.lb) together with the
lock washers and washer (14). Insert the V-belt (3) into the pulley of the
alternator (19).
Loosely preassemble the tension bar (20) on the side with the oblong
hole on the alternator bracket (9) with allen screws (21) M8x16, washer
(23) 8.4 and lock washer A8 (22). Then loosely preassemble tension
bar (20) on the alternator (15) with allen screw (24) M8x20, lock washer
(25) and washer (26).
74-00-00
page 57
May 01/2007