Rotax MML-912 Maintenance Manual page 78

If the oil pressure falls below the minimum value up to max. 0,5 bar (7.25
Minimum oil
pressure falls
psi) and for max. 1 min., the cause must be determined. Table 5.
below 0.5 bar
(7.25 psi) max. 1
min. in flight
Step
1
2
3
4
5
6
7
8
9
Consequent damage can be expected if the oil pressure falls below the
Minimum oil
pressure in
minimum value more than 0.5 bar (7.25 psi). Table 6.
flight more then
Oil pressure below minimum permissible value more than 0.5 bar (7.25 psi) in
0.5 bar (7.25 psi)
Step
1
2
3
4
Effectivity: 912 Series
Edition 2 / Rev. 0
BRP-Powertrain
MAINTENANCE MANUAL
Oil pressure below minimum permissible oil pressure up to max. 0.5 bar
(7.25 psi) max. 1min. in flight
Inspect all oil lines for restrictions and clear passage.
Verify oil quantity.
Inspect pressure sensor.
Inspect indicating instrument to specifications of the manufacturer, replace
as required.
Inspect crankcase pressure (See Installation Manual 912 Series, latest is-
sue.)
If no cause for the low oil pressure is found after the above checks, carry
out an oil change.
If after the previous checks and oil change the oil pressure is still too low,
repair or overhaul the engine in accordance with the BRP-Powertrain in-
structions for continued airworthiness.
Inspect all systems for correct functioning.
Carry out detailed inspection of the affected engine components.
Replace the oil cooler and oil lines. Before the reinstal-
NOTICE
WARNUNG
lation of the engine the complete lubrication system
(inclusive oil tank) must be flushed.
The whole cooling system must be inspected, repaired or overhauled in
accordance with the BRP-Powertrain instructions for continued airworthi-
ness.
- Replace the crankshaft.
Carry out detailed inspection of the affected engine components.
Cut oil filter housing and inspect filter mat for foreign matter.
Inspect all further systems for correct functioning.
Procedure
flight
Procedure
05-50-00
page 16
October 01/2009