Robinsons R66 - 53-21 Engine Cowling; 53-22 Mast Fairing

53-20 Fairing, Cowlings, and Panels
CAUTION
Mast fairing, cowlings, and panels must be installed for flight.
53-21 Engine Cowling
Refer to R66 Illustrated Parts Catalog (IPC) Figure 53-1.
A. Removal
1. Refer to Figure 53-1. Open G040-1 engine cowling assembly right and left doors.
2. Loosen clamp securing starter-generator hose to air inlet. Slide hose off of inlet.
3. Remove screws securing cowling to fuselage and remove cowling.
B. Installation
1. Refer to Figure 53-1. Support G040-1 engine cowling assembly, and install screws
securing cowling to fuselage.
2. Slide starter-generator hose onto air inlet and tighten clamp. Close right and left
doors.
53-22 Mast Fairing
Refer to R66 Illustrated Parts Catalog (IPC) Figure 53-3.
A. Opening and Closing
1. Refer to Figure 53-1. Remove right-side screws securing F261-1 mast fairing
assembly at aft, vertical seam.
2. Remove right-side screws securing fairing to ribs. Keep fairing from springing open
and minimize strain on nutplates by holding fairing closed until all right-side screws
are removed. Slowly open fairing.
3. Hold fairing closed. Install right-side screws securing fairing to ribs, and screws
securing fairing at aft, vertical seam.
B. Removal
1. Open mast fairing assembly per Section 53-22 Part A.
2. Disconnect (pitot system) 15-4-N-O union near G201-1 (servo support) frame
assembly. Cap fitting and plug line.
3. Remove remaining screws securing fairing to ribs and remove fairing.
25 OCT 2010 R66 Maintenance Manual Chapter 53 Fuselage Page 53.3