General Check of the Engine Vibration Indicating System [IAE]

TASK 77-32-00-200-010-A
General Check of the Engine Vibration Indicating System

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	LIGHT SOURCE - INSPECTION
No specific	AR	MIRROR - INSPECTION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 77-32-15-400-010-B	Installation of the Vibration Transducer
TASK 77-32-43-400-010-A	Installation of the Vibration Harness
Engine Vibration Indicating System

3. Job Set-up
Subtask 77-32-00-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 77-32-00-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position below the engine.

Subtask 77-32-00-110-050-A ** ON A/C NOT FOR ALL

C. Clean the vibration transducer, the harnesses and the clips:
(1) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) , made moist with cleaning fluid (Material No.V01-002) , to clean the transducer (4), the harnesses (8) and the clips (2) and (3).

Engine Vibration Indicating System ** ON A/C NOT FOR ALL

(2) Make the components dry with a clean Textile-Lint free Cotton - (Material No.14SBA1) .

4. Procedure
Subtask 77-32-00-210-050-A ** ON A/C NOT FOR ALL

A. Examine the vibration transducer (4) and the harnesses (8) to make sure they are satisfactorily attached.

Engine Vibration Indicating System ** ON A/C NOT FOR ALL

(1) Use the LIGHT SOURCE - INSPECTION and the MIRROR - INSPECTION. If necessary
(2) If the vibration transducer (4) is loose then examine the bolts (5) for tightness. If any of the bolts are loose then tighten them (Ref. AMM TASK 77-32-15-400-010).
(3) Examine the clips (3) for tightness. If any of the clips are loose then tighten them (Ref. AMM TASK 77-32-15-400-010).
(4) Examine the electrical connectors (6) for tightness. If either is loose then tighten it (Ref. AMM TASK 77-32-15-400-010).
(5) Examine the electrical connectors (7) for tightness. If either is loose then tighten it (Ref. AMM TASK 77-32-43-400-010).
(6) Examine the vibration harnesses (8) for tightness. If either is loose then examine the clips (2). If any of the clips are loose then tighten them (Ref. AMM TASK 77-32-43-400-010).
(7) Examine the electrical connectors (1) for tightness. If either is loose then tighten it (Ref. AMM TASK 77-32-43-400-010).

Subtask 77-32-00-210-051-A ** ON A/C NOT FOR ALL

B. Examine the general condition of the vibration transducer (4), the electrical connectors (1, 6 and 7) and the electrical harnesses (8).

Engine Vibration Indicating System ** ON A/C NOT FOR ALL

Use the LIGHT SOURCE - INSPECTION and the MIRROR - INSPECTION, if necessary.
(1) Examine the vibration transducer (4) for cracks, if the transducer is cracked, reject it.
(2) Examine the vibration transducer (4) for dents and damage, if the transducer has dents or damage, reject it.
(3) Examine the plate which is used to attach the vibration transducer (4) for scratches. If the plate has scratches, reject it.
(4) Examine the electrical connectors (1, 6 and 7) for scratches. Reject the electrical connectors which have scratches with a depth of more than 0.039 in. (1.0 mm).
(5) Examine the electrical connectors (1, 6 and 7) for cracks, dents and deformation. Reject the electrical connectors which have cracks, dents or deformation.
(6) Examine the harnesses (8) for cracks. Reject the harness which is cracked.
(7) Examine the harnesses (8) for dents and damage. Reject the harness which has dents or damage.
(8) Examine the harness (8) for damage to the outer woven sheath. Reject the harness if damage to the outer woven sheath shows the cables.
(9) Examine all the clips ((2) and (3) for damage. Reject the clips which have damage.

5. Close-up
Subtask 77-32-00-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:18:26 UTC