DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE:
CHAPTERPAGE 720
MAINTENANCE MANUAL STEMME S12
• Check tight connections of exible hoses and aluminum pipes.
• Check routing of lines for clearance from hot parts, and for sucient support of tubes.
•
Check condition, attachment and routing of drainage line from overow container in
landing gear bay.
CAUTION
Check service life of coolant hoses. Refer to section 4 Airworthiness Limitations Section.
See also Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series,
section 12-20-00, (Annex E).
COOLANT LEVEL CHECK AND REPLENISHING
The coolant level in the overow bottle must be between min. and max. marking. If the level is
below min. marking, rell completely the expansion tank on the upper LH rewall, then replenish
the overow bottle to max. marking. After a short period of engine operation, check the level
again and repeat if necessary.
WARNING
Never open container cap when cooling system is hot. For safety’s sake, cover cap with a cloth
and open cap slowly. Sudden opening of the cap could provoke exit of boiling coolant and in
consequence, scalds.
Coolant specication : See section 3.4.14.2
7.4.3.2 FLUSHING OF COOLING SYSTEM
See Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series,
section 12-20-00, (Annex E).
7.4.3.3 COOLANT REPLACEMENT
Additionally to instructions of Maintenance Manual (Line Maintenance) for ROTAX Engine Type
914 Series: To drain the entire liquid cooling system, open the two valves installed in aluminum
tubes below the engine. To improve ventilation during relling of new coolant, loosen bleed screw
on expansion reservoir on engine. Close screw after coolant replacement!
Coolant specication : See section 3.4.14.2
See Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series,
section 12-20-00, (Annex E) and Operating Manual for ROTAX Engine Type 914 Series.
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