Robinson R-66 Series Lithium-Ion, Maintenance Manual, Page: 449 / 950

JUL 2020
Chapter 52 Doors and Windows
Page 52.17
52-32 Impact-Resistant (Polycarbonate) Windshield Installation (continued)
E. Installation (continued)
9. At door frame:
a. Remove door and hinge assembly. Remove G367 straps and expand pilot
holes to 0.169–0.175 inch diameter holes thru windshield. Finish holes
with reamer; deburr back side of holes using plastic razor. Clean up debris.
b. Run a bead of B270-26 sealant along entire edge of windshield. Install hardware
securing side retainer and D805-2 restraint to cabin. Install hardware securing
G367 straps and ties to windshield; special torque screws per
§
20-33. Wipe
off excess sealant with cheesecloth wet with lacolene.
10. Reinstall hinge assembly, and install door assembly per
§
52-10 Part C.
11. Ensure all fasteners are tight. Wipe off excess sealant with cheesecloth wet with
lacolene.
12. Allow sealant to dry according to manufacturer’s instruction.
13. Remove protective paper or film from inside and outside of the windshield.
14. Repeat steps to install opposite-side windshield, as required.
F. Replacement
1. Perform
§
52-31 Part F steps 1 thru 4.
WARNING
Review appropriate Safety Data Sheet (SDS) when working in
proximity to hazardous materials. Specific recommendations
for use of personal protective equipment are located in the SDS.
2. A band saw with 20
°
–30
°
clearance angle, 0–5
°
rake angle, 600–1000 m/min
rotation speed, and 1.5–4 mm tooth spacing is recommended for initial trimming.
Tape cardboard to band saw table to prevent scratching of windshield. Trim
windshield carefully to prevent binding of saw blade and cracking windshield.
Finish initial cut using an orbital sander, as required.
3. Hold windshield in place and check for fit. Re-trim as necessary.
4. After windshield is fitted, use sanding block with 100-grit paper to smooth edges.
Verify all edges are clean and free of notches.
5. Remove trimming debris from windshield and cabin.
6. Install windshield per
§
52-32 Part E.