Maintenance Manual STEMME S10-VT
Date of Issue: Jan. 01, 1998
Page 7-13
Amendment Nr. 14
Date: Nov. 30. 2007
A4011121_B23.doc
Doc. No. A40-11-121
7.4.3.1 Visual and Leakage Check of the System
(radiator, expansion reservoir, refill container, overflow container and coolant lines)
Check radiator, expansion reservoir, refill container and overflow container for condition, attachment and
leakage. Check condition and leakage of flexible coolant hoses, specially close to clamps and tight
attachment of hoses on connections (observe section 5.2.4). Check tight connections of flexible hoses and
aluminium 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 operating time of coolant hoses. Refer to section 4, "Airworthiness Limitations Section".
See also "Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series”,
section 12-00, subsection 3.1, (Annex E)
Coolant Level Check and Replenishing
:
Coolant level in overflow container should be between min and max marking. If level is below min marking, fill
completely refill container on the LH firewall, then replenish overflow container to max marking. After a short
time engine running, check level again and repeat if necessary.
WARNING:
Never open refill 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 would provoke exit of boiling coolant and in
consequence scalds.
Coolant specification:
see section 3.4.14
7.4.3.2 Rinsing of Cooling System
See "Maintenance Manual (Li
ne Maintenance) for ROTAX Engine Type 914 Series”, section 12
-00,
subsection 3.3, (Annex E)
7.4.3.3 Coolant Renewal
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 aluminium tubes below the engine.
To improve ventilation during refilling of new coolant, loosen screw on expansion reservoir on engine. Close
screw after renewal!
Coolant specification:
see section 3.4.14
See "Maintenanc
e Manual (Line Maintenance) for ROTAX Engine Type 914 Series”, section 12
-00,
subsection 3.2, (Annex E) and "Operating Manual for ROTAX Engine Type 914 Series”
7.4.3.4 Ram Air Cooling
Check condition of composite distributor on cylinder shafts. Check tight fit, routing and condition of air hose
from distributor to aluminium coupling sheet. Check condition and attachment of the sheet to the fuselage
steel frame and condition of its rubber sealing to the RH cowling.
7.4.4 Air Induction System
System Description:
See section 3.4.4
7.4.4.1 Intercooler and Airbox
Check condition and tight fit of air hoses (observe section 5.2.4) and routing between turbocharger and
airbox. Check condition of intercooler, tight fit of intercooler and condition of its suspension. Check tight fit of
airbox on the carburetors (clamps) and condition of connection tube. Check lower rubber support of airbox on
turbocharger suspension strut.
