Effectivity 912/914 Series
Edition 1 / Rev. 0
78-00-00
page 7
May 01/2007
d02627
BRP-Rotax
Maintenance Manual
3) Maintenance
The following sections describe maintenance procedure for engines of the 912/914
Series above and beyond the maintenance and special checks, see corresponding
Maintenance Manual (Line Maintenance) for the respective engine type, 912 Series or
914 Series, and the systems descriptions given hitherto. The description is subdivided
into subsections and descriptions of the function of the various systems.
3.1)
Disassembly of the complete exhaust system (on the 912 Series)
▲
WARNING: For disassembly, observe the aircraft manufacturers instructions.
3.2)
Disassembly of the complete exhaust system incl. turbocharger and
engine suspension frame (on the 914 Series)
See Figs. 78-2 and 78-3.
■
CAUTION: Work must be carried out on a cold engine!
Danger of burns!
Exhaust manifold / exhaust system assembly:
Unhook the Bowden cable for the wastegate control, see 78-00-00 sec. 3.6.1.
Remove lock nuts M8 (1) on exhaust bend flanges.
◆
NOTE: If one of the studs M8x23/20 (2) should also become loose, refit
and tighten to 8 Nm (71 in.lb). The longer threaded end (23 mm)
(0.9 in.) to be screwed into cylinder head.
Withdraw exhaust bends (3) by pulling and swiveling them slightly.
Detach turbo pressure (4) and suction oil lines (5) from the oil pump. See Fig.
78-2. For further details on “Turbocharger oil circuit”, see 79-00-00.
Slacken tension clamp (6) but do not detach or remove it from the exhaust
bracket (7).
Remove the allen screw M10x50 (8) (attachment of the turbocharger bracket)
together with the lock washer and washer and allen screw M6x50 (25) with the
compensating shim.
Also detach connection (9) turbocharger bracket - engine suspension frame (not
supplied with the engine).
Summary of Contents for MMH-912 Series
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