25 OCT 2010 R66 Maintenance Manual Chapter 28 Fuel System Page 28.3
28-10 Bladder Assembly
Refer to R66 Illustrated Parts Catalog (IPC) Figures 28-1 and 28-3.
CAUTION
G028-1 bladder assembly temperature should be above 65°F
before removing, installing, or flexing bladder.
A. Removal
1. Defuel helicopter per Section 12-42.
2. Remove tailcone cowling assembly per Section 53-23.
3. Remove fuel quantity sender per Section 28-21.
4. Refer to Figure 28-2. Cut and discard safety wire securing A729-40 tube to left roll-
over vent valve and pull tube off vent valve. Remove fasteners securing F250-1 cover
assembly to G028-1 bladder assembly and F028-1 support assembly and remove cover.
Remove and discard o-ring.
5. Cut and discard safety wire securing A729-2 tube to right roll-over vent valve and pull
tube off vent valve. Remove screws and washers securing valve to support. Cut and
discard ty-rap securing 35486 hanger tab to G915-5 tab.
6. Remove low-fuel switch assembly per Section 28-22. Tape bladder openings.
7. Disconnect D205-21 (fuel outlet) hose assembly from B254-3 strainer and cap fittings.
Remove screws and washers securing strainer to support. Remove strainer and tape
bladder opening.
8. Remove sump valve per Section 28-12.
9. Remove hardware securing G004-4 (right side, aft fuselage) skin to cabin and remove
skin. Detach bladder hook tape from support loop tape, and remove bladder through
right side opening.
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