STEMME S12, Maintenance Manual

Page: 178 / 290

DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: --
CHAPTER- PAGE 7-20
MAINTENANCE MANUAL STEMME S12
• Check tight connections of flexible hoses and aluminum pipes.
• Check routing of lines for clearance from hot parts, and for sufficient support of tubes.
• Check condition, attachment and routing of drainage line from overflow 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 overflow bottle must be between min. and max. marking. If the level is
below min. marking, refill completely the expansion tank on the upper LH firewall, then replenish
the overflow 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 specification : 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 refilling of new coolant, loosen bleed screw
on expansion reservoir on engine. Close screw after coolant replacement!
Coolant specification : 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«.