71-22 Cage Assembly
Refer to R66 Illustrated Parts Catalog (IPC) Figure 71-9.
A. Removal
1. Remove tail rotor drive fan shaft per Section 65-10.
2. Remove air filter assembly per Section 71-21.
3. Refer to Figure 71-3. Remove hardware securing G057-1 cage assembly to firewall
and remove cage. Install suitable barrier to prevent foreign objects from entering
engine inlet.
B. Installation
1. Refer to Figure 71-3. Remove barrier, position G057-1 cage assembly against
firewall, and install hardware securing cage to firewall. Verify security.
2. Install air filter assembly per Section 71-21.
3. Install tail rotor drive fan shaft per Section 65-10.
71-23 Engine Inlet Bellmouth
Refer to R66 Illustrated Parts Catalog (IPC) Figure 71-11.
A. Removal
1. Remove engine per Section 75-10.
2. Refer to Figure 71-3. Remove F579-1 bellmouth cover and loosen B277-36 clamps
securing bellmouth to engine front support. Remove bellmouth and clamps.
3. Remove hardware securing F597-1 seal and F580-1 inlet to engine front support.
Remove seal and inlet. Install cover over front support.
B. Installation
1. Refer to Figure 71-3. Remove engine front support cover, install F580-1 inlet and
F597-1 seal (drain hole on bottom) on front support, and install hardware. Verify
security.
2. Install B277-36 clamps and F579-1 bellmouth over front support flange, and tighten
clamps. Verify security.
3. Install engine per Section 71-10.
Page 71.12 Chapter 71 Powerplant R66 Maintenance Manual SEP 2012
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