DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE:
CHAPTERPAGE 722
MAINTENANCE MANUAL STEMME S12
7.4.5.2 EXHAUST HEADERS
•
Remove heat insulation tape. Visually check condition of headers (deformation and cracks,
especially connecting ends with spring supports and anges).
•
Check condition of screw connections on engine and manifold (Nuts M8, tightening torque
20 Nm / 14.7 lbf ft) with cold engine.
•
Check condition of springs and proper overlapping of connecting ends of the exhaust bends
(min. 5 mm / 0.2 in).
• Check condition of support plate on lower engine mounting frame below engine, and tight
connection of header to the support plate.
• Re-assemble heat insulation tape.
7.4.5.3 HEAT INSULATION
CHECK OF HEAT INSULATION TAPE ON EXHAUST HEADERS
• Check condition of glass-ber heat insulation tape on exhaust headers, especially close
to spring clamps. Renew if ber tape is brittle (bers fall o when touched), has holes or
is frayed.
• Check condition of spring clamps.
REPLACEMENT OF HEAT INSULATION TAPE
If required or at the latest after maximum 100 engine hours the heat insulation tape (type see
section 3.4.5, available from STEMME) must be replaced:
• Remove spring clamps and insulation tape.
• Fix beginning of new tape by means of a suitable glue.
•
Wind new tape round the exhaust header with an overlap of approx. 50% with some tension.
•
Fasten tape ends by means of the spring clamps. The headers of Cyl. 1 and 2 have an
additional clamp midway along their length.
CHECK OF MUFFLER HEAT INSULATION
• Check condition of insulation cover and its fastening ttings.
• Check tight t of springs and condition of securing wire to connect end wall insulation.
•
Renew insulation if surface of cover is brittle or if ttings are loose (type see section 3.4.5,
available from STEMME).
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