Checking Of The Overload Clutch - Rotax 912 iSc Maintenance Manual

2) Checking of the overload clutch

In the event of lead deposits and/or if slipping is suspected, it will be nec-
General note
essary to check the overload clutch.
NOTE:
NOTE:
1
2
3
Fig. 1
Effectivity: 912 i Series
Edition 1/Rev. 0
BRP-Powertrain
MAINTENANCE MANUAL
Slipping of overload clutch is apparent if at engine speed rise,
the propeller speed does not increase at the same rate.
The engine should be run for a short time just prior to the test,
otherwise there is the risk of the clutch "drying out", resulting in
a higher torque.
Step
Remove the propeller as per manufacturers instruction.
Lock the crankshaft. See chapt. 12-20-00 section:
NOTICE
the gearbox must be removed and the test carried out on a suitable moun-
ting attachment.
A specially prepared lever (e.g. length 3 m (9.9 ft.), see Fig.1) is fitted on
the propeller flange and the breakaway torque measured with a suitable
measuring tool.
Procedure
Danger of damage to the engine suspension!
Depending on the engine installation (e.g. in the
case of extremely lightweight engine suspension),
6)
05-50-00
page 5
January 01/2012