Rotax MMH-912 Series - Section 72 Engine

BRP-Powertrain
Maintenance Manual
Effectivity 912/914 Series
Edition 1 / Rev. 3
72-00-00
page 1
October 01/2010
d04776
SECTION 72
ENGINE
1) Table of contents
SECTION 72
ENGINE
1) Table of contents ....................................................................................72-00-00 / 1
2) Systems description ................................................................................. 72-00-00 / 5
2.1) Propeller gearbox ..........................................................................72-00-00 / 5
2.1.1) Gearbox version ................................................................... 72-00-00 / 5
2.2) Hydraulic governor ........................................................................72-00-00 / 7
2.3) Vacuum pump ...............................................................................72-00-00 / 8
2.4) Connections for instrumentation ...................................................72-00-00 / 8
2.4.1) Mechanical rev counter and hourmeter (optional) ................72-00-00 / 8
3) Maintenance ........................................................................................... 72-00-00 / 9
3.1) Vacuum pump removal and inspection .........................................72-00-00 / 9
3.2) Governor removal and inspection .................................................72-00-00 / 10
3.3) Removal of the fly wheel hub ........................................................72-00-00 / 10
3.4) Ignition housing removal and inspection ......................................72-00-00 / 11
3.5) Ignition housing fitting ..................................................................72-00-00 / 14
3.6) Sprag clutch ..................................................................................72-00-00 / 15
3.6.1) Sprag clutch removal ...........................................................72-00-00 / 16
3.6.2) Sprag clutch dismantling......................................................72-00-00 / 17
3.6.3) Sprag clutch installation .......................................................72-00-00 / 18
3.7) Reduction gear for electric starter................................................. 72-00-00 / 20
3.8) Rev counter drive ..........................................................................72-00-00 / 21