Effectivity: 912 Serie BRP-Powertrain page 7-9
OM Edition 2 / Rev. 0 April 01/2010
d04679.fm
Backlash On the gearbox version with overload clutch the design incorpo-
rates a friction damped free play at the dogs to warrant proper en-
gine idling. Due to this backlash at the dogs a distinct torsional
impact arises at start, stop and at sudden load changes, but due
to the built-in overload clutch it will remain harmless.
NOTE: This overload clutch will also prevent any undue
load to the crankshaft in case of ground contact
of the propeller. See Service Letter SI-912-015,
latest edition.
Vacuum pump or
hydraulic go-
vernor
Alternatively either a vacuum pump or a hydraulic governor for
constant speed propeller can be used. The drive is in each case
via the propeller reduction gear.
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