Rotax 912 i Series Maintenance Manual page 80

Step
912 iS
912 iS/iSc Sport
The maximum limit must not be exceeded, otherwise it may cause a damage of
the gearbox. Values below the minimum limit may cause a slipping of the over-
Step
05–50–00
Page 14
September 01/2018
BRP-Rotax
MAINTENANCE MANUAL LINE
Procedure
4 Attach and adjust outrigger of the torque multiplier. If the engine is mounted
in an aircraft, this one must be supported/fixed to the ground.
NOTE
Due to the torque multiplier the effective direction of the support de-
vice is opposite to the input direction of rotation..
5
Connect torque wrench to torque multiplier.
6
Turn over the clutch 3 times. (Do not record the measured values!).
7 Turn over the clutch and record the breakaway torque on the torque
wrench.
NOTE
Check transmission ratio of the torque multiplier.
To calculate the value the measurement must be repeated a few
times (min. 2x) in order to obtain a stable value.
8 Compare the measured value with the limits.
If the value is greater or smaller than the limit values, the overload clutch
must be inspected, repaired or overhauled in accordance with the BRP-Ro-
tax instructions for continued airworthiness.
Engine type
load clutch that result in an overspeed.
Procedure
9 Remove torque multiplier and torque wrench.
10 Remove the crankshaft. Locking pin, replace screw with new ring.
See Chapter 12-20-00 section Locking/loosen of the
11 Install the propeller according to the manufacturers instruction.
Breakaway torque
minimum Limit
600 Nm (442 ft.lb)
700 Nm (516 ft.lb.)
ATTENTION
maximum Limit
800 Nm (590 ft.lb.)
900 Nm (664 ft.lb.)
crankshaft.
Effectivity: 912 i Series
Edition 2/Rev. 0