TM 55-1520-240-T
CHAPTER 5
ROTOR BLADE TRACKING AND BALANCING SYSTEM TROUBLESHOOTING
CHAPTER OVERVIEW
Chapter 5 contains procedures for Rotor Blade Tracking and Balancing System troubleshooting. Rotor Blade Tracking and Balancing system and failure
symptoms are listed below. Included in this Chapter are locations and views of all electrical connectors, receptacles, relays, and ground connections for
the Rotor Blade Tracking and Balancing System.
Refer to TM 55-1520-240-23 for required Rotor Blade Tracking and Balancing Systems maintenance procedures.
SYSTEM
PARA
SYSTEM
PARA
CENTRIFUGAL DROOP STOPS
5-1
ROTOR BLADE TRACKING AND BALANCING SYSTEM
5-2
FAILURE SYMPTOM LIST
ROTOR BLADE TRACKING AND BALANCING SYSTEM
SYMPTOM
TASK
GREEN POWER STATUS LIGHTS DO NOT COME ON WHEN
HELlTUNE UNIT IS TURNED ON
5-2.3
NO FWD LATERAL OR AFT LATERAL INDICATION ON IPS
INDICATOR
5-2.3
NO FWD VERTICAL OR AFT VERTICAL INDICATION ON IPS
INDICATOR
5-2.3
PHAZOR CLOCK ANGLE INDICATOR LIGHTS DO NOT COME
ON
5-2.3
ROTOR BLADE CIRCUIT BREAKER WILL NOT STAY CLOSED 5-2.3
TRACKING TARGETS NOT VISIBLE OR STROBEX TUBE LAMP
DOES NOT FLASH
5-2.3
Change 10
5-2.1
