CAB-30-02
Page 14 May 17, 2013
Caravan SERVICE BULLETIN
CAB-30-02
(86) 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 6.
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.
(87) Apply pres s ure of 10 psi, do a chec k for leaks in the l ine, and repair all leaks.
(88) Apply pressure of 20 ps i to slowly start the fluid flow through the panel.
(89) 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 70 ps i.
(90) 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.
(91) Stop the fluid supply.
(92) Wait until the fluid pressure is releas ed.
(93) Disconnect the purge tank lines.
(94) 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.
(95) Apply pres s ure of 10 psi, do a chec k for leaks in the l ine, and repair all leaks.
(96) Apply pressure of 20 ps i to slowly start the fluid flow through the panel.
(97) 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 i ncrease the pressure to 7 5 psi.
(98) 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.
(99) Stop the fluid supply.
(100)Wait until the fl uid press ure is releas ed.
(101)Disconnect the purge tank lines.
(102)Install new sea ling rings (one S28 00-942 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.
(103)Disconnect t he left horizontal s t abil izer TKS panel supply line from the tailcone proportioning
unit.
NOTE: The empenna ge proportioning unit is part of the tail bracket ass embly on the fl oor of
the tailcone forward o f th e tailcone ac c es s panel.
(104)Connect th e purge tank l ines to the le ft horizont al stabilizer T KS panel as near to the panel as
you can.
(105)Apply pressure of 10 psi, do a check f or leaks in the line, and re pair all leaks.
(106)Apply pre ssure of 20 psi to slowly st art the fluid fl ow through the panel.
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