10) Oil Specification Not Respected; 11) Sudden Drop Of Boost Pressure And Engine Speed; 12) Sudden Rise Of Boost Pressure And Engine Speed - Rotax 914 F Maintenance Manual

12.4.10) Oil specification not respected

12.4.11) Sudden drop of boost pressure and engine speed

12.4.12) Sudden rise of boost pressure and engine speed

Page Date
118 1997 02 01
If by error aircraft engine oil, with or without additives, has been refilled and
the engine has been operated for less than 5 hours, the following measures
have to be taken:
— Change oil. See chapter 12.3.9).
— Open plug screw and drain remaining oil from crankcase.
— Renew oil filter. See chapter 12.3.10).
— Drain oil completely from oil cooler.
— Refill oil tank with new automotive type engine oil as specified.
— Let engine run for approx. 1 hour and renew oil once more using specified
automotive engine oil, renewing also the oil filter again, as described
before.
If the engine has been operated longer than 5 hours with aircraft engine oil,
with or without additives, remove propeller gearbox and the mating drive gear
from engine.
Send propeller gearbox with the required documentation and the engine log
book to an authorized overhaul workshop for check and overhaul. See
chapter 14.4).
Inspect engine and especially turbo charger and air intake system.
check oil consumption - oil level check. See chapter 12.3.8).
check wiring. See chapter 12.3.16)
WARNING: If the turbo charger is damaged send the engine to our
authorized overhaul centre for repair.
If no physical damage can be detected, check the TCU. Consult chapter
13.6).
Inspect engine and especially turbo charger and air intake system.
check wiring. See chapter 12.3.16)
If no physical damage can be detected, check the TCU. Consult chapter
13.6).
ATTENTION: If the limits of operation are exceeded or fall short of conduct
the additional relevant checks.
WARNING: Don't start engine before trouble is found and rectified.
Main
914 F
Reference Modification no.
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