Exhaust System; Installation Of The Exhaust System - Rotax 447 UL SCDI Installation Manual

10) Exhaust system

▲ WARNING:
■ ATTENTION: Beware of any accessory systems that advertise an improvement over
The exhaust system is tuned for the respective engine and performance and must not be
changed. If modifications are inevitable, then the mid length of inlet tube between exhaust
flange and muffler must be maintained without fail (see ill. 7). For necessary modifications,
ask for manufacturer's approval in writing. Check engine performance with serial exhaust
system, prior to any modification.
For engine type 582 UL DCDI 40 with reduced performance and noise emission an exhaust
is offered that consists of items to be fitted by the aircraft manufacturer to suit the aircraft.
Consult the respective parts list for parts needed.
■ ATTENTION: Pay special attention to maintain medium length of tubes. When using bent
Engine type
ROTAX 582, 40 kW ............................................. 660 mm (26")
Check exhaust system prior to every flight for tightness, physical damage or changes in
sound pattern. Especially inspect springs and hooks.

10.1) Installation of the exhaust system:

The muffler must be supported on vibration damping blocks. All ball joints must be
fig. 8
Effectivity: 447 UL SCDI, 503 UL DCDI, 582 UL DCDI /mod. 99
AIRCRAFT ENGINES
INSTALLATION MANUAL
Considerable effort has gone into the design of the ROTAX exhaust
system. Any changes to the original system may severely deteriorate
performance, reliability, engine life, fuel economy and ability of noise
reduction. Improper handling or modification of the exhaust system as
supplied could ruin the engine.
stock components.
Engine
Motor
fig. 7
medium length of tube
mittlere Rohrlänge
tubes, refer to length of centre line.
greased regularly with heat resistant lubricant (e.g. LOCTITE
Anti-Seize, 297 431) to avoid gripping or seizing of joints and
consequent breaking of exhaust components.
Springs used on exhaust system must be secured against
loss and vibration (see Service Information 11 UL 87-E, page
5).
02795
muffler
Auspufftopf
Auspufftopf
02049
medium length of tube
page 10 - 1
Initial issue, May 01/99