SERVICE
BULLETIN
Czech Sport Aircraft a.s.
Na Záhonech 212,
686 04 Kunovice
Czech Republic
No.: SB-SC-055
Date: 2018-08-20
Rev.: -
Page: 20 of 25
Date: -
17)
Turn the left wing in such a way that the lower side of wing is located on the assembly supports. Clean
the inner space of the fuel tank of left wing by means of the vacuum cleaner. Check the cleaning quality
by means of the telescopic mirror.
Warning:
During the work according to this section, it is necessary to use the vacuum cleaner designed for working
in an explosive environment.
18)
Install the fuel gauge transmitter into the fuel tank of left wing. Connect the transmitter to the electrical
wiring of wing (see the marking of fuel gauge contacts and the marking of appropriate plugs of wing
cabling based on Section 6 + see Fig. 03)
19)
Check the left wing fuel tank tightness as follows:
a)
Hermetically blind the fuel return line connection located on the right side of the left wing fuel tank
and the hose of suction line that is connected to the fuel tank.
b)
Connect the test equipment to the hose of venting system of left wing fuel tank (see the area
between ribs No. 8 and No. 9).
c)
By means of the test equipment, create and close an air pressure of 10 kPa (1.45 PSI) = 1000 mm
(40 inch ) of water column in the above mentioned fuel tank.
Caution:
•
The work according to this section (i.e. Section No. 19 c) must be performed only after
the hardening of the sealants that are hermetically sealing the joint between the fuel return line
connection and the left wing fuel tank. The mentioned sealants must be hardened to the values
shown in the Technical Data Sheets of the used sealants.
•
The work according to this section (i.e. Section No. 19 c) must be performed at a constant
ambient temperature.
d)
After 10 minutes, adjust the positive air pressure in the left wing fuel tank again to 10 kPa (1.45 PSI)=
= 1000 mm (40 inch) of water column, close the positive air pressure in the tank and after another
60 minutes check the tank for leak-tightness.
Fig. 03
Summary of Contents for SportCruiser
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