Robinson R22 — Maintenance Manual

This document is the Maintenance Manual for the Robinson R22 helicopter, specifically focusing on rigging, track, and balance procedures. It provides detailed instructions for maintaining the main rotor and tail rotor flight controls, ensuring proper adjustments for safe operation. The manual is intended for maintenance personnel and pilots who need to understand the technical aspects of the R22's rotor systems. Key procedures include rod end adjustments, cyclic and collective control rigging, and track and balance techniques using specific equipment. The manual emphasizes the importance of precise measurements and adjustments to maintain the helicopter's performance and safety standards.

• Cyclic control travel must maintain a clearance of .130 inches between the jack shaft and gearbox.
• Main rotor blade angles are measured at 37.75 inches inboard from the blade tip.
• Cyclic travel rigging requires specific blade angles: 10.5°/11.0° for A958-1 bellcranks and 8.3°/8.8° for A175-1 bellcranks.
• Tail rotor blade angles must be adjusted to within .4 degrees of each other for proper tracking.
• Throttle correlation rigging requires a gap of 0.020–0.050 inches between the carburetor bellcrank and idle RPM adjustment screw.