SERVICE KIT
SK 208-179B
D. Remove and discard the 967B5 Drain Valve. Keep the nut and discard the o-ring.
E. Install t he 180C4 Valve Assembly with the new M83248/1-021 O-ring and NAS1149D1290K Washer
and the k ept 856A2 Nut . Install the washer under the nut.
F. Use safety wire and the double-twist method to s af et y the 856A 2 N ut . (Re fer to the Model 208
Maintenance Manual, Chapter 20, Saf etyi ng - M aintenance Practices.)
G. Inst all and seal th e lower acces s cover. (Refer to the Model 208 Maintenance M anual, Chapter 28,
Fuel Tank Sealing - Maintenance Practi ce s.)
H. Do the modification of the 2611 000-12 Removable Skin Panel as follows:
(1) Make the hole of t he dimensions shown in the 2611000-12 Removable Skin Panel.
(2) Drill one 0.219-inch diam et er hole in the 2611000-12 Removable Skin P anel.
(3) Deburr and apply Alodine to bare metal.
(4) Change t he part number on the Removable Skin Panel f rom 2611000-12 to 2616033-3.
I. Inst all the MS35489-6 Grom met.
J. Install t he 2616033-8 208B S ump Tube As s embly through the s ide of the 2613498 Forward Fairing
Assembly and through the MS3548 9-6 Grommet.
K. Install the S1212-66 Control and the S1979-1 Knob Assembly as follows:
(1) (Refer to Figure 15, View A-A.) With t he two MS 21919WDG3 Clamps, MS21919W DG4 Clamp,
AN52-10R14 Screw, NAS 43DD3-18FC Spacer, AN525-10R8 S c rew, AN525-1011 Sc rew,
MS210 44N3 Nut, NA S 1149F0332P Was her (installed under the nut), attach the S12 12-37
Control to the 2616 033-3 R emovable Skin Panel.
(2) (Refer to Fig ure 15, View E-E and View F-F.) Drill one Num ber 10 (0. 193-inch diameter) hole in
the s k in and install the MS21073L3 Nutp late.
(3) Install t he N AS1149F03 32P Washer, NAS 43DD3-109FC Spacer, MS 21919WDG3 Clamp,
MS21919WDG4 Clamp, and MS35207-273 Screw.
(4) Do the routing of the S1 212-66 Control as shown.
(5) Bend the S 1212-37 Control t hrough the arm of the 180C4 Valve Assembly as shown.
L. Install th e 2616033-5 Welded Drain Tube Ass embly as follows:
(1) (Refer to Figure 15, View A-A) Find the c orrec t position for and drill a 0.265-inc h d iam ete r hol e
in the 26134 98-1 Forward Fairing Assembly to i ns tall th e 2616033-5 Welded Dra in Tube
Assem bly.
(2) Put the 2616033-5 Welded Drain Tube A s s embly through the hol e in the 26 13498 Fairing
Assem bly.
(3) (Refer t o Figure 15, View B-B.) Cut the two S 2548-4-6.00 Hoses to the correct lengths.
(4) Attach t he two S2548-4-6.00 Hoses t o the s hrouds with kept clamps and do not remove t he
grommets that are instal led in the holes in the belly skin.
(5) Attach the two S2548-4-6.00 Hos es to the 2616033-5 Weld ed Drain Tube Assembly with the
two AN737TW22 Clam ps .
(6) With U470644 S ealant, fi llet seal the tube to the inner and the outer sides of the 2613498
Fairing Assembly.
M. Make sure th at t he fuel 180C 4 Valve Assembly operates correctly as follows:
(1) Open the fuel shutoff valves to let some fuel go into the reservoir tank.
(2) Do a check for leaks around the l ower access cover.
(3) Pull the S 1212-37 Control to open an d close the drain valve.
SK208-179B
February 7, 2013 Page 25
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