LH VIB ABSORBER CIRCUIT BREAKER WILL NOT STAY CLOSED (Continued)

2-2.7 LH VIB ABSORB CIRCUIT BREAKER WILL NOT STAY CLOSED

2-2.8 NO INDICATION ON TEST BOX METER WHEN TEST SWITCH IS SET TO EXTEND OR RETRACT, SWITCH AT LEFT

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
Page Navigation
148

TM 55-1520-240-T 2-2.7 LH VIB ABSORBER CIRCUIT BREAKER WILL NOT STAY CLOSED (Continued) 2 - 2 .7 REMOVE ELEC PWR AND DISCONNECT CONNECTOR OPEN NO. 2 PDP. CHECK 139P4 FROM TEST BOX. FOR SHORT BETWEEN CIR- CLOSE LH VIB ABSORB CUIT SIDE OF LH VIB AB- CB 139CB1 DID CIRCUIT SORB CB 139CB1 AND BREAKER STAY CLOSED? GROUND. IS SHORT PRE- LOCATE SHORT ON WIRES W552-229-22 OR W639- 359-20 BETWEEN CB 139CB1 AND CONNECTOR 139P4 PIN A. REPAIR OR REPLACE WIRE AS RE- QUIRED REPLACE LH VIB ABSORB CIRCUIT BREAKER. REMOVE ELEC PWR AND DISCONNECT TEST BOX CONNECTOR 139P4. CHECK FOR SHORT BETWEEN PLUG 139P4 PIN D AND GROUND, IS GROIJND PRE- REMOVE COPILOT’S SEAT AND ACCESS COVER UNDER COPILOT’S SEAT AND DISCONNECT VIB AB- SORBER CONNECTOR 139P1. CHECK FOR SHORT BETWEEN PLUG 139P1 PIN B AND GROUND. IS SHORT PRESENT? REPLACE TEST BOX. REPLACE LH DYNAMIC AB- SORBER. END OF TASK Change 2 2-31

Privacy Statement
Press Release
Contact