REMOVE PITCH LINK (Continued) DISCONNECT PITCH LINK LOWER END

REMOVE PITCH LINK

INSPECT PITCH LINK WITH TEFLON BEARINGS ON HELICOPTER

TM-55-1520-240-23-4 CH-47D Heilcopter Manual
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TM 55-1520-240-23-4 5-97 REMOVE PITCH LINK (Continued) 5-97 Do not disconnect either end of a pitch link unless the blade load is removed from the pitch link. Injury to personnel and damage to equipment can occur if a pitch link is disconnected without the blade load being supported by other means. On helicopters with 45 and without 63 the lower end of the pitch link must be disconnected first or damage to equipment may occur. DISCONNECT PITCH LINK LOWER END 2. Remove cotter pin (4), nut (5), and washer (6) from bolt (7) in swashplate lugs (8). Do not remove the bolt. 3. Position blade (1) at center of lead-lag travel. Have helpers lift and support the blade. Remove bolt (7) and limiter (9). 4. Have helpers twist blade (1) as required to align holes in pitch arm (10) and pitch shaft (11). Install lockpin (12). 5. Remove the lower end of pitch link (13) from swashplate lugs (8). Lower blade (1). 6. Check that bushings (14 and 15) remain installed. Install bolt (7), with limiter (9), through swashplate lugs (8). Loosely install washer (6) and nut (5) on the bolt. DISCONNECT PITCH LINK UPPER END 7. Remove cotter pin (16), nut (17), and washer (18), from bolt (19). Remove the bolt and limiter (20) from the pocket in pitch arm (10). Remove pitch link (13) from the pitch arm pocket. 8. Check that bushings (21 and 22) remain installed. Install bolt (19), with limiter (20) through the pocket of pitch arm (9). Loosely install washer (18) and nut (17) in the pocket of pitch arm (9). FOLLOW-ON MAINTENANCE: None END OF TASK 5-584

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