Caravan
SERVICE BULLETIN
CAB-30-02
(18) Connect the purge tank line to the left mid wing TKS panel as near to the panel as you can.
(19) Apply pressure of 10 psi, do a check for leaks in the line, and repair all leaks.
(20) Apply pressure of 20 psi to slowly start the fluid flow through the left mid wing panel.
(21) Wait until the fluid starts to come out all the holes at the same rate along the full length of the
left mid wing panel and increase the pressure to 60 psi.
(22) Continue the fluid purge until the panel is correctly purged in accordance 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 towel over the leading edge and/or the dry spots of the panel during purging.
(23) Stop the fluid supply.
(24) Wait until the fluid pressure is released.
(25) Slowly disconnect the test cart fluid supply tube from the left mid wing panel.
(26) Install a new S2800-942 Sealing Ring and connect the left mid wing panel supply line to port
2 on the wing proportioning unit.
(27) Disconnect the left outboard wing TKS panel supply lines from ports 3 and 4 on the wing
proportioning unit.
(28) Connect the purge tank line to the outboard wing TKS panel as near to the panel as you can.
(29) Apply pressure of 10 psi, do a check for leaks in the line, and repair all leaks.
(30) Apply pressure of 20 psi to slowly start the fluid flow through the panel.
(31) Wait until the fluid starts to come out all the holes at the same rate along the full length of the
panel and increase the pressure to 65 psi.
(32) Continue the fluid purge until the panel is correctly purged in accordance 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 towel over the leading edge and/or the dry spots of the panel during purging.
(33) Stop the fluid supply.
(34) Wait until the fluid pressure is released.
(35) Slowly disconnect the test cart fluid supply tube from the left outboard wing TKS panel.
(36) Install a new S2800-942 Sealing Ring and connect the left outboard wing TKS panel supply
lines to ports 3 and 4 on the wing proportioning unit.
(37) Disconnect the two wing strut TKS panel supply lines from ports 6 and 7 on the left wing
proportioning unit.
(38) Connect the purge tank line to the section of the wing strut TKS panel that supplies fluid by
the line that was attached to port 6.
NOTE: The strut panel has two membranes (upper and lower). Each membrane has a fluid
supply tube. You can install a tee fitting and connect the test cart supply tube to
each membrane.
(39) Apply pressure of 10 psi, do a check for leaks in the line, and repair all leaks.
(40) Apply pressure of 20 psi to slowly start the fluid flow through the panel.
(41) Wait until the fluid starts to come out all the holes at the same rate along the full length of the
panel and increase the pressure to 70 psi.
CAB-30-02
May 17, 2013
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