BRP Rotax 915 i A Series Maintenance Manual page 42

No.
Exhaust valves and intake valves may NOT undergo a compressed air blasting
treatment with solid blasting, strong abrasive material. Due to this surface treat-
ment one does gain a microscopic surface roughness/pitting which does allow
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June 01 2019
MAINTENANCE MANUAL LINE
part no.
n.a
5 Compressed air blasting using a solid blasting
agent
This method is suitable for local and gradual very
fine treatment of steel parts with rust film (propeller
shaft). The MICRONORM abrasive contains no
harmful substances, is approved by the competent
authorities and guarantees optimum cleaning. The
granulates used are of sizes 40 to 60 μ. The achiev-
able surface roughness is between 0.5 to 1μ, which
corresponds to ultrafine machining of surfaces.
as a consequence the adhesion of fuel residues. These deposits are then in-
volved in a chemical reaction (especially of the sulfur and lead content of AV-
GAS) with the valve material. This effect may cause hot-gas corrosion on the
BRP-Rotax
Description, Application
ATTENTION
affected parts.
Qty.
AR
Effectivity: 915 i A Series
Rev. 1