Broad Band Vibration Higher than the Limit on Engine 2

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1. Possible Causes
· TRANSDUCER-VIBRATION ( 4004EV1 )
· CABLE ASSY-VIBRATION TRANSDUCER 1 ( 4004EV2 )
· CABLE ASSY-VIBRATION TRANSDUCER 2 ( 4004EV3 )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 77-32-00-200-010 General Check of the Engine Vibration Indicating System
Ref. AMM 77-32-15-000-010 Removal of the Vibration Transducer
Ref. AMM 77-32-15-400-010 Installation of the Vibration Transducer
Ref. AMM 77-32-43-000-010 Removal of the Vibration Harness
Ref. AMM 77-32-43-400-010 Installation of the Vibration Harness
REFERENCE DESIGNATION
Ref. AMM 79-00-00-200-011 Inspection of the Magnetic Chip Detectors for Debris
3. Fault Confirmation
Subtask 77-30-00-710-102-A
A. Test
Not applicable.
4. Fault Isolation
Subtask 77-30-00-810-083-A
A. If the fault symptom is identified by the CFDS message CHECK ENG2 BB VIB EXCEED and the ECAM
warning ENG EVMU:
· do an inspection of the vibration indication system Ref. AMM 77-32-00-200-010 .
(1) If you find no fault:
· do an inspection of the magnetic chip detectors Ref. AMM 79-00-00-200-011 .
(2) If you find no fault:
· replace the TRANSDUCER-VIBRATION ( 4004EV1 ) Ref. AMM 77-32-15-000-010 and Ref.
AMM 77-32-15-400-010 .
(3) If the fault continues:
· replace the CABLE ASSY-VIBRATION TRANSDUCER 1 ( 4004EV2 ) and the CABLE
ASSY-VIBRATION TRANSDUCER 2 ( 4004EV3 ) Ref. AMM 77-32-43-000-010 and Ref.
AMM 77-32-43-400-010 .
Figure 77(IAE)-30-00-991-00100-13-A- / SHEET 1/1 - N1 Trim Balance Probe (Engine 1)
Figure 77(IAE)-30-00-991-00500-13-A- / SHEET 1/1 - Installation without Voltage Divider Harness Assembly
Figure 77(IAE)-30-00-991-00600-13-A- / SHEET 1/1 - Installation with Voltage Divider Harness Assembly
Figure 77(IAE)-30-00-991-00200-13-A- / SHEET 1/1 - N1 Trim Balance Probe (Engine 2)
Figure 77(IAE)-30-00-991-00300-13-A- / SHEET 1/1 - N2 Signal to EVMU (Engine 1)
Figure 77(IAE)-30-00-991-00400-13-A- / SHEET 1/1 - N2 Signal to EVMU (Engine 2)
77-32 - (IAE) - ENGINE VIBRATION INDICATING SYSTEM
77-32-00 - (IAE) - ENGINE VIBRATION INDICATING SYSTEM
77-32-00 PB 201 CONF 13 - ENGINE VIBRATION
INDICATING SYSTEM - FAULT ISOLATION PROCEDURES [Rev.6 from Feb 2017] 2026.04.04 04:37:53 UTC