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3.9.14) Disc spring pre-tension adjustment (with overload clutch)
3.9.15) Disc spring pre-tension adjustment (with dog hub)
Effectivity 912/914 Series
Edition 1 / Rev. 2
BRP-Rotax
Maintenance Manual
See Figs. 72-53 and 72-25 (see Section 72-00-00 / 3.9.4).
When the propeller shaft assembly is uncompressed, the contact
surface (24) for the ring halves must lie in the groove of the propeller
shaft 1 mm (0.039 in.) over the upper edge (25). The difference must
be compensated for by placing shims (26) between eccenter (14) and
step collar (15).
◆ NOTE:
To facilitate adjustment, they can first be pushed apart
until the top edge (25) of the contact surface (24) for the
ring halves slips into the groove in the propeller shaft
and a 1 mm (0.039 in.) compensating shim (26) can be
inserted between step collar (15) and eccenter (14).
◆ NOTE:
To check the friction torque of the dog hub in free
rotation, see the corresponding Maintenance Manual
(Line Maintenance) for the respective engine type, 912
Series or 914 Series.
See Fig. 72-53
Completely compress disk springs utilizing mounting yoke part no.
876885. The lower edge of the groove (25) in the propeller shaft must
align with the top edge of the retaining ring (24) (distance must not be
more than 0.2 mm (0.008 in)). Set distance by shims to max. 0.2 mm
(0.008 in).
After completing the adjustment of the disk spring travel, depress dog
gear (2) with mounting yoke, part no. 876885, until both ring halves can
be inserted.
■ CAUTION :
Always use new ring halves.
Insert ring halves and release pressure, see 72-00-00 sec. 3.9.4.
■ CAUTION : If the spacing is insufficient, never overpress the
springs, as this will cause the dog gear to collide with
the gear cover.
■ CAUTION : The ring halves must be completely inserted in the
groove on propeller shaft!
Check that the ring halves are positioned correctly.
72-00-00
page 51
July 01/2008
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