CAB-30-02
Page 12 May 17, 2013
Caravan SERVICE BULLETIN
CAB-30-02
(42) Continue the flui d pu rge until the p anel is correct ly purge d in acc ordance with Figure 3 and
Table 2.
NOTE: To get an even flow over the panel it may be necessary to lightly run a dry cloth or
paper t owel over the leading edge and/or the dry spots of the pan el during purg ing.
(43) Stop the fluid supply.
(44) Wait until the fluid pressure is releas ed.
(45) Disconnect the purge tank lines.
(46) Connect the purge tank line t o the section of th e wing st rut TKS panel t hat supplies fl uid by
the lin e that was attache d to port 7.
NOTE: The strut pa nel h as two membranes (upper and lower). Each membrane has a flui d
supply t ube. You can install a tee fi tting and c onnect t he test cart suppl y tube to
each membrane.
(47) Apply pres s ure of 10 psi, do a chec k for leaks in the l ine, and repair all leaks.
(48) Apply pressure of 20 ps i to slowly start the fluid flow through the panel.
(49) Wait until t he fluid s t arts to come out all the ho les at the sam e rate along the full len gth of t he
panel and increas e the press ure to 75 ps i.
(50) Continue the flui d pu rge until the p anel is correct ly purge d in accordanc e with Figure 3 and
Table 2.
NOTE: To get an even flow over the panel it may be necessary to lightly run a dry cloth or
paper t owel over the leading edge and/or the dry spots of the pan el during purg ing.
(51) Stop the fluid supply.
(52) Wait until the fluid pressure is releas ed.
(53) Disconnect the purge tank lines.
(54) Install new sealing rings (one S2800-942 Sealing Ring at port 6 and one S 2800-943 Sealing
Ring at port 7) and connec t the wing strut TKS supply lines t o ports 6 and 7 on th e wing
proportioning unit.
(55) Disconnect the two right inboard wing porous panel sup ply lines from ports 1 and 5 of the
wing proportioning unit.
NOTE: The inboa rd and outboard wing panels hav e two supply tubes. It is necessary to
disconne ct the second tube and put a cap or plug in the tube end to keep s ufficient
pressure in the panel.
NOTE: If your airplane is e quipped with the weather radar system, the ai rplane ha s only one
access panel t o get to the right wing proportioning unit . You can disconne ct the panel
feed line s at th e body of the proportioning v alve and t hen safety them with safety wire
when you connect t hem again, or y ou can remove the rad ar to get acces s .
(56) Connect the test cart supply t ube to the inboard panel as near to the panel as y ou can.
(57) Apply pres s ure of 10 psi, do a chec k for leaks in the l ine, and repair all leaks.
(58) Apply pressure of 20 ps i to slowly start the fluid flow through the panel.
(59) Wait until t he fluid s t arts to come out all the ho les at the sam e rate along the full len gth of t he
panel and increas e the press ure to 65 ps i.
(60) Continue the flui d pu rge until the p anel is correct ly purge d in accordanc e with Figure 3 and
Table 2.
NOTE: To get an even flow over the panel it may be necessary to lightly run a dry cloth or
paper t owel over the leading edge and/or the dry spots of the pan el during purg ing.
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