Rotax 914 series, Maintenance Manual

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MAINTENANCE MANUAL
BRP-Powertrain
Effectivity: 914 Series
Edition 2 / Rev. 0
12-20-00
page 58
January 01/2010
13.5) Inspection of the filter insert
General note
This inspection is important as it allows conclusions to be drawn regarding
the internal condition of the engine and provides information about the
possible cause of any damage.
Procedure
To carry out the procedure the following steps are necessary:
Possible foreign
matter
Possible foreign matter:
- Steel chips
- Bronze chips
- Aluminium chips
- Sliver of bearing material
- Remains of sealing compound
Increased for-
eign matter
If an increased amount of metal particles is found, such as brass- or
bronze chips or sliver from bearing abrasion, repair or overhaul the engine
in accordance with the BRP-Powertrain instructions for continued airwor-
thiness. If the filter mat is clogged by foreign matter, the lube oil reaches
the bearing points unfiltered via the by-pass valve in the oil filter.
Unclear findings
In the case of unclear findings:

WARNUNG
NOTICE
The filter insert must be inspected carefully for metal
chips.
Step Procedure
1 Cut oil filter open using special tool taking care not to produce chips.
2 Remove filter insert.
3 Cut top and bottom edges off the mat with a knife.
4 Remove filter mat, fold up and press remaining oil out.
5 Unroll and inspect it for metal chips, foreign matter, contamination and abra-
sion.
6 Pass over matt with a clean magnet and inspect for metal.
Step Procedure
1 Flush the oil circuit.
2 Fit a new oil filter.
3 Engine test run. See chap. 12-20-00 section: 10) .
4 Inspect the oil filter once more.