Air / Engine Cooling - AUTO GYRO Cavalon Maintenance Manual

CHAPTER 72 TO 74 - ENGINE RELATED
For the (core) engine refer to the engine manufacturer's documentation in its latest revision.
Concerning fuel system (Filter, Pumps, Shut-off valve) see
Engine cowlings are described in
Card in Part E of this manual.
CHAPTER 75 - AIR / ENGINE COOLING
Engine cooling is provided by ram air cooled cylinders and liquid cooled cylinder heads. Therefore,
coolant temperature (CT) indication in the cockpit corresponds to actual coolant temperature. Sufficient
cooling air flow is provided by a ram air duct in the lower portion of the forward mast cover.
Rotax 916 only:
A central engine air intake for cooling and aspiration is provided as ram air inlet in the lower area forward
mast cover, just above the cabin. For engine cooling there is a direct airflow from the intake towards the
cylinder head.
The water cooling system comprises of engine driven pump, radiator with thermo-activated electrical
blower fan, expansion tank / overflow bottle with radiator cap, and hoses.
NOTE: The expansion tank / overflow bottle is located in the ram air duct in the lower
portion of the forward mast cover.
A single, large area radiator is mounted below the fuselage in the centre of the rear undercarriage boom.
Force cooling is ensured by an electrically driven ducted fan controlled by a thermoswitch.
For the relevant checking and replenishing procedures, refer to engine manufacturer's manual.
Oil cooling is described in
AMM-CV-915iS/916iS-EN-
C-2023-12
Aircraft
Maintenance Manual
CHAPTER 52. For removal and installation see the dedicated Job
CHAPTER 79.
Part C – System Description Section
(Chapter 21 – 90)
Cavalon 915 iS / 916 iS
CHAPTER 28.
AutoGyro
Page 65 of 67