STEMME S12, Maintenance Manual

Page: 179 / 290

DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: --
CHAPTER- PAGE 7-21
MAINTENANCE MANUAL STEMME S12
7.4.3.4 RAM AIR COOLING
• Check condition of composite distributor (plenum) on cylinder barrels
• Check tight fit, routing and condition of air hose from distributor to aluminum coupling
sheet.
• Check condition and attachment of the sheet to the fuselage steel frame and condition of
its rubber sealing to the RH cowling.
7.4.4 AIR INDUCTION SYSTEM
System Description : See section »3.4.4«
7.4.4.1 INTERCOOLER AND AIR BOX
• Check condition and tight fit of air hoses (observe section »5.2.1«) and routing between
turbocharger and air box.
• Check condition of inter cooler, tight fit of intercooler and condition of its suspension.
• Check tight fit of air box on the carburetors (clamps) and condition of connection tube.
• Check lower rubber support of air box on turbocharger suspension strut.
7.4.4.2 AIR FILTER
In addition to instructions in »Maintenance Manual (Line Maintenance) for ROTAX Engine Type
914 Series« check condition and tight fit of air hose assy. between turbocharger inlet and filter,
including composite sealing plate.
See »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series«,
section 12-20-00, (Annex E).
7.4.5 EXHAUST SYSTEM
System description : See section »3.4.5«
7.4.5.1 TURBOCHARGER / MUFFLER MOUNTINGS
• Check tight fit of screw connections of the mounting struts, on engine housing and
turbocharger/muffler side, and tight fit of turbine-compressor and turbine-muffler screw
connections. Check tight fit of the clamp supporting the muffler.
• Check condition of struts (cracks, especially close to welding seams, corrosion, e.g. from
chafing).
• Check proper position of turbocharger unit (clearance of exhaust headers to fuselage steel
frame, especially cross-strut below engine).