BRP-Rotax
MAINTENANCE MANUAL LINE
INSPECTING OF THE OIL FILTER COMPONENTS
General note
ATTENTION
The filter components must be inspected carefully.
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:
Step
Procedure
1
Oil filter cut open using special tool taking care not to produce chips.
2 Remove anti-drain membrane.
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
abrasion.
6
Pass over matt with a clean magnet and inspect for metal.
Possible foreign
matter
Steel chips
Bronze chips
Aluminium chips
Sliver of bearing material
Remains of sealing compound Plastic (thrust washer)
Carbon fiber Sliver of copper
Increased foreign
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-Rotax in-
structions for continued airworthiness. 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:
Step
Procedure
1 Flush the oil circuit.
2
Fit a new oil filter.
3
Engine test run. See chap. 12-20-00 section: Test run of engine.
4
Inspect the oil filter once more.
Effectivity: 912 i Series
Edition 2/Rev. 0
12–20–00
Page 37
September 01/2018
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