SEP 2012 R66 Maintenance Manual Chapter 32 Landing Gear Page 32.15
32-61 Cylinder Assembly (continued)
C. Filling (continued)
6. Allow cylinder and valve to cool to ambient temperature. Top off with helium to
compensate for any pressure loss due to cooling.
7. Remove fill hose and MT546-2 adapter assembly.
8. Remove & discard old o-ring from cap. Lightly coat new MS28778-2 o-ring with
A257-19 lubricant and install o-ring on fill-port cap at base of threads. Install cap in
valve assembly and special torque cap to 40 in.-lb.
D. Installation
WARNING
Verify D757-1 (gray) valve assembly is engraved with “D758-4”
or has a data plate indicating B900-8 modification.
1. Fill cylinder per Section 32-61 Part C, if not previously accomplished.
2. Refer to Figure 32-5. Install MT545-1 pin assembly in D757-1 valve assembly.
3. Hinge right aft seat assembly forward. Verify A701-5 (anti-chafe) tape protects
cylinder where cylinder base contacts cabin structure in three locations. Carefully
position cylinder in D669-6 cradle assembly.
4. Engage D676-2 cable assembly ball in D760-1 trigger; do not kink cable. Install
MS3367-4-9 ty-rap as shown. Cinch ty-rap until snug without over-tightening, and
trim tip flush with head. Install hardware securing D761-1 support to valve.
5. Verify cable housing protrudes through clamps on support flush-to-0.200 inch
maximum. Adjust as necessary.
6. Rotate cylinder as required to minimize cable bending and to ensure clearance with
cabin structure.
7. Verify D682-6 decal is in specified location. If decal location is incorrect, remove
old decal and install new decal on cylinder. Install screws securing D669-3 strap
to cradle assembly.
8. Install hardware securing D761-2 cover to valve and D761-1 support.
9. Remove MT546-1 diffuser, if installed. Connect D674-9 hose assembly to valve
fitting. Orient hose as required to maintain miminum 0.25 inch clearance to cylinder
and adjacent vertical panel. Special torque B-nut per Section 20-33 and torque
stripe per Figure 5-1.
10. Rig inflation lever and replace shear-rivet per Section 32-62.
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