Detailed Visual Inspection of the Hydraulic Pipes [CFMI]

TASK 78-31-49-210-001-A
Detailed Visual Inspection of the Hydraulic Pipes

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 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-31-49-000-001-A	Removal of the Return Pipe of the Left Latch
TASK 78-31-49-000-002-A	Removal of the Upper Supply Pipe of the Left Latch
TASK 78-31-49-000-003-A	Removal of the Lower Supply Pipe of the Left Latch
TASK 78-31-49-000-004-A	Removal of the Lower Supply Pipe of the Right Latch
TASK 78-31-49-000-005-A	Removal of the Upper Supply Pipe of the Right Latch
TASK 78-31-49-000-006-A	Removal of the Return Pipe of the Right Latch
TASK 78-31-49-000-007-A	Removal of the Upper Rod Supply Hose
TASK 78-31-49-000-008-A	Removal of the Rod Supply Pipe of the Left Actuator
TASK 78-31-49-000-009-A	Removal of the Head Supply Pipe of the Left Actuator
TASK 78-31-49-000-011-A	Removal of the Head Supply Pipe of the Right Actuator
TASK 78-31-49-000-012-A	Removal of the Upper Head Supply Hose
TASK 78-31-49-000-013-A	Removal of the Head Supply Junction Pipe
TASK 78-31-49-000-014-A	Removal of the Left or Right Supply Pipe of the Door-Opening Actuator
TASK 78-31-49-000-015-A	Removal of the Left or Right Inner Supply Pipe of the Door-opening Actuator
TASK 78-31-49-000-017-A	Removal of the Upper Swivel Joints
TASK 78-31-49-000-018-A	Removal of the Hydraulic Line Upper, Double and Lower Brackets
TASK 78-31-49-000-020-A	Removal of the Lower Swivel Joints
TASK 78-31-49-000-021-A	Removal of the Interface Bracket, HCU Bracket and Hydraulic Line Middle Bracket
TASK 78-31-49-000-022-A	Removal of the Lower Head Supply Hose
TASK 78-31-49-000-023-A	Removal of the Lower Rod Supply Hose
TASK 78-31-49-000-024-A	Removal of the Rod Supply Junction Pipe
TASK 78-31-49-000-040-A	Removal of the Rod Supply Pipe of the Right Actuator
TASK 78-31-49-400-001-A	Installation of the Return Pipe of the Left Latch
TASK 78-31-49-400-002-A	Installation of the Upper Supply Pipe of the Left Latch
TASK 78-31-49-400-003-A	Installation of the Lower Supply Pipe of the Left Latch
TASK 78-31-49-400-004-A	Installation of the Lower Supply Pipe of the Right Latch
TASK 78-31-49-400-005-A	Installation of the Upper Supply Pipe of the Right Latch
TASK 78-31-49-400-006-A	Installation of the Return Pipe of the Right Latch
TASK 78-31-49-400-007-A	Installation of the Upper Rod Supply Hose
TASK 78-31-49-400-008-A	Installation of the Rod Supply Pipe of the Left Actuator
TASK 78-31-49-400-009-A	Installation of the Head Supply Pipe of the Left Actuator
TASK 78-31-49-400-011-A	Installation of the Head Supply Pipe of the Right Actuator
TASK 78-31-49-400-012-A	Installation of the Upper Head Supply Hose
TASK 78-31-49-400-013-A	Installation of the Head Supply Junction Pipe
TASK 78-31-49-400-014-A	Installation of the Left or Right Supply Pipe of the Door-Opening Actuator
TASK 78-31-49-400-015-A	Installation of the Left or Right Inner Supply Pipe of the Door-Opening Actuator
TASK 78-31-49-400-017-A	Installation of the Upper Swivel Joints
TASK 78-31-49-400-018-A	Installation of the Hydraulic Line Upper, Double and Lower Brackets
TASK 78-31-49-400-020-A	Installation of the Lower Swivel Joints
TASK 78-31-49-400-021-A	Installation of the Interface Bracket, HCU Bracket and Hydraulic Line Middle Bracket
TASK 78-31-49-400-022-A	Installation of the Lower Head Supply Hose
TASK 78-31-49-400-023-A	Installation of the Lower Rod Supply Hose
TASK 78-31-49-400-024-A	Installation of the Rod Supply Junction Pipe
TASK 78-31-49-400-040-A	Installation of the Rod Supply Pipe of the Right Actuator
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Forward Frame of Half Door

3. Job Set-up
Subtask 78-31-49-941-062-A ** ON A/C NOT FOR ALL

A. On the panel 115VU:

Put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).

Subtask 78-31-49-010-063-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 78-31-49-040-050-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 78-31-49-010-064-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors: (Ref. AMM TASK 78-36-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 78-31-49-210-050-A ** ON A/C NOT FOR ALL

A. Do a visual inspection of hydraulic pipes as follows:

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Inspect the pipes for:
A.Crack	No crack allowed	If there is crack, replace pipe. (Ref. AMM TASK 78-31-49-000-001) and (Ref. AMM TASK 78-31-49-400-001) or (Ref. AMM TASK 78-31-49-000-002) and (Ref. AMM TASK 78-31-49-400-002) or (Ref. AMM TASK 78-31-49-000-003) and (Ref. AMM TASK 78-31-49-400-003) or (Ref. AMM TASK 78-31-49-000-004) and (Ref. AMM TASK 78-31-49-400-004) or (Ref. AMM TASK 78-31-49-000-005) and (Ref. AMM TASK 78-31-49-400-005) or (Ref. AMM TASK 78-31-49-000-006) and (Ref. AMM TASK 78-31-49-400-006) or (Ref. AMM TASK 78-31-49-000-008) and (Ref. AMM TASK 78-31-49-400-008) or (Ref. AMM TASK 78-31-49-000-009) and (Ref. AMM TASK 78-31-49-400-009) or (Ref. AMM TASK 78-31-49-000-040) and (Ref. AMM TASK 78-31-49-400-040) or (Ref. AMM TASK 78-31-49-000-011) and (Ref. AMM TASK 78-31-49-400-011) or (Ref. AMM TASK 78-31-49-000-014) and (Ref. AMM TASK 78-31-49-400-014) or (Ref. AMM TASK 78-31-49-000-015) and (Ref. AMM TASK 78-31-49-400-015) or (Ref. AMM TASK 78-31-49-000-024) and (Ref. AMM TASK 78-31-49-400-024) or (Ref. AMM TASK 78-31-49-000-013) and (Ref. AMM TASK 78-31-49-400-013) or
B.Local collapse	-Two defects maximum per each 11.8 in. (299.7 mm) minimum separation between defects 0.98 in. (24.9 mm) -10 percent maximum depth minimum radius at bottom of defect 0.07 in. (1.8 mm)	If the defect is not allowable, replace pipe. (Ref. AMM TASK 78-31-49-000-001) and (Ref. AMM TASK 78-31-49-400-001) or (Ref. AMM TASK 78-31-49-000-002) and (Ref. AMM TASK 78-31-49-400-002) or (Ref. AMM TASK 78-31-49-000-003) and (Ref. AMM TASK 78-31-49-400-003) or (Ref. AMM TASK 78-31-49-000-004) and (Ref. AMM TASK 78-31-49-400-004) or (Ref. AMM TASK 78-31-49-000-005) and (Ref. AMM TASK 78-31-49-400-005) or (Ref. AMM TASK 78-31-49-000-006) and (Ref. AMM TASK 78-31-49-400-006) or (Ref. AMM TASK 78-31-49-000-008) and (Ref. AMM TASK 78-31-49-400-008) or (Ref. AMM TASK 78-31-49-000-009) and (Ref. AMM TASK 78-31-49-400-009) or (Ref. AMM TASK 78-31-49-000-040) and (Ref. AMM TASK 78-31-49-400-040) or (Ref. AMM TASK 78-31-49-000-011) and (Ref. AMM TASK 78-31-49-400-011) or (Ref. AMM TASK 78-31-49-000-014) and (Ref. AMM TASK 78-31-49-400-014) or (Ref. AMM TASK 78-31-49-000-015) and (Ref. AMM TASK 78-31-49-400-015) or (Ref. AMM TASK 78-31-49-000-024) and (Ref. AMM TASK 78-31-49-400-024) or (Ref. AMM TASK 78-31-49-000-013) and (Ref. AMM TASK 78-31-49-400-013) or
C.Nick, gauge and scratch	Maximum depth 10 percent of wall thickness	If the defect is not allowable, replace pipe. (Ref. AMM TASK 78-31-49-000-001) and (Ref. AMM TASK 78-31-49-400-001) or (Ref. AMM TASK 78-31-49-000-002) and (Ref. AMM TASK 78-31-49-400-002) or (Ref. AMM TASK 78-31-49-000-003) and (Ref. AMM TASK 78-31-49-400-003) or (Ref. AMM TASK 78-31-49-000-004) and (Ref. AMM TASK 78-31-49-400-004) or (Ref. AMM TASK 78-31-49-000-005) and (Ref. AMM TASK 78-31-49-400-005) or (Ref. AMM TASK 78-31-49-000-006) and (Ref. AMM TASK 78-31-49-400-006) or (Ref. AMM TASK 78-31-49-000-008) and (Ref. AMM TASK 78-31-49-400-008) or (Ref. AMM TASK 78-31-49-000-009) and (Ref. AMM TASK 78-31-49-400-009) or (Ref. AMM TASK 78-31-49-000-040) and (Ref. AMM TASK 78-31-49-400-040) or (Ref. AMM TASK 78-31-49-000-011) and (Ref. AMM TASK 78-31-49-400-011) or (Ref. AMM TASK 78-31-49-000-014) and (Ref. AMM TASK 78-31-49-400-014) or (Ref. AMM TASK 78-31-49-000-015) and (Ref. AMM TASK 78-31-49-400-015) or (Ref. AMM TASK 78-31-49-000-024) and (Ref. AMM TASK 78-31-49-400-024) or (Ref. AMM TASK 78-31-49-000-013) and (Ref. AMM TASK 78-31-49-400-013) or
D.Local distorsion of pipe section	-Twice the original diameter maximum length -10 percent maximum variation of original contour	If the defect is not allowable, replace pipe. (Ref. AMM TASK 78-31-49-000-001) and (Ref. AMM TASK 78-31-49-400-001) or (Ref. AMM TASK 78-31-49-000-002) and (Ref. AMM TASK 78-31-49-400-002) or (Ref. AMM TASK 78-31-49-000-003) and (Ref. AMM TASK 78-31-49-400-003) or (Ref. AMM TASK 78-31-49-000-004) and (Ref. AMM TASK 78-31-49-400-004) or (Ref. AMM TASK 78-31-49-000-005) and (Ref. AMM TASK 78-31-49-400-005) or (Ref. AMM TASK 78-31-49-000-006) and (Ref. AMM TASK 78-31-49-400-006) or (Ref. AMM TASK 78-31-49-000-008) and (Ref. AMM TASK 78-31-49-400-008) or (Ref. AMM TASK 78-31-49-000-009) and (Ref. AMM TASK 78-31-49-400-009) or (Ref. AMM TASK 78-31-49-000-040) and (Ref. AMM TASK 78-31-49-400-040) or (Ref. AMM TASK 78-31-49-000-011) and (Ref. AMM TASK 78-31-49-400-011) or (Ref. AMM TASK 78-31-49-000-014) and (Ref. AMM TASK 78-31-49-400-014) or (Ref. AMM TASK 78-31-49-000-015) and (Ref. AMM TASK 78-31-49-400-015) or (Ref. AMM TASK 78-31-49-000-024) and (Ref. AMM TASK 78-31-49-400-024) or (Ref. AMM TASK 78-31-49-000-013) and (Ref. AMM TASK 78-31-49-400-013) or
E.Hydraulic leakage	No leakage permitted	If there is leakage, check nipples and connecting nuts for correct torque. (Ref. AMM TASK 78-31-49-400-001) or (Ref. AMM TASK 78-31-49-400-002) or (Ref. AMM TASK 78-31-49-400-003) or (Ref. AMM TASK 78-31-49-400-004) or (Ref. AMM TASK 78-31-49-400-005) or (Ref. AMM TASK 78-31-49-400-006) or (Ref. AMM TASK 78-31-49-400-008) or (Ref. AMM TASK 78-31-49-400-009) or (Ref. AMM TASK 78-31-49-400-040) or (Ref. AMM TASK 78-31-49-400-011) or (Ref. AMM TASK 78-31-49-400-014) or (Ref. AMM TASK 78-31-49-400-015) or (Ref. AMM TASK 78-31-49-400-024) or (Ref. AMM TASK 78-31-49-400-013).
		If the leakage persists, replace pipe. (Ref. AMM TASK 78-31-49-000-001) and (Ref. AMM TASK 78-31-49-400-001) or (Ref. AMM TASK 78-31-49-000-002) and (Ref. AMM TASK 78-31-49-400-002) or (Ref. AMM TASK 78-31-49-000-003) and (Ref. AMM TASK 78-31-49-400-003) or (Ref. AMM TASK 78-31-49-000-004) and (Ref. AMM TASK 78-31-49-400-004) or (Ref. AMM TASK 78-31-49-000-005) and (Ref. AMM TASK 78-31-49-400-005) or (Ref. AMM TASK 78-31-49-000-006) and (Ref. AMM TASK 78-31-49-400-006) or (Ref. AMM TASK 78-31-49-000-008) and (Ref. AMM TASK 78-31-49-400-008) or (Ref. AMM TASK 78-31-49-000-009) and (Ref. AMM TASK 78-31-49-400-009) or (Ref. AMM TASK 78-31-49-000-040) and (Ref. AMM TASK 78-31-49-400-040) or (Ref. AMM TASK 78-31-49-000-011) and (Ref. AMM TASK 78-31-49-400-011) or (Ref. AMM TASK 78-31-49-000-014) and (Ref. AMM TASK 78-31-49-400-014) or (Ref. AMM TASK 78-31-49-000-015) and (Ref. AMM TASK 78-31-49-400-015) or (Ref. AMM TASK 78-31-49-000-024) and (Ref. AMM TASK 78-31-49-400-024) or (Ref. AMM TASK 78-31-49-000-013) and (Ref. AMM TASK 78-31-49-400-013) or
2.Inspect the hydraulic hoses for:
A.Damage	No damage permitted	If you find some damage, replace hydraulic hose. (Ref. AMM TASK 78-31-49-000-007) and (Ref. AMM TASK 78-31-49-400-007) or (Ref. AMM TASK 78-31-49-000-012) and (Ref. AMM TASK 78-31-49-400-012) or (Ref. AMM TASK 78-31-49-000-023) and (Ref. AMM TASK 78-31-49-400-023) or (Ref. AMM TASK 78-31-49-000-022) and (Ref. AMM TASK 78-31-49-400-022) or
B.Hydraulic leakage	No leakage permitted	If there is leakage, check nipples and connecting nuts for correct torque. (Ref. AMM TASK 78-31-49-400-007) or (Ref. AMM TASK 78-31-49-400-012) or (Ref. AMM TASK 78-31-49-400-022) or (Ref. AMM TASK 78-31-49-400-023).
		If the leakage persists, replace hydraulic hose. (Ref. AMM TASK 78-31-49-000-007) and (Ref. AMM TASK 78-31-49-400-007) or (Ref. AMM TASK 78-31-49-000-012) and (Ref. AMM TASK 78-31-49-400-012) or (Ref. AMM TASK 78-31-49-000-023) and (Ref. AMM TASK 78-31-49-400-023) or (Ref. AMM TASK 78-31-49-000-022) and (Ref. AMM TASK 78-31-49-400-022) or
3.Inspect the swivel joints for:
A.Damage	No damage permitted	If you find some damage, replace swivel joint. (Ref. AMM TASK 78-31-49-000-017) and (Ref. AMM TASK 78-31-49-400-017) or (Ref. AMM TASK 78-31-49-000-020) and (Ref. AMM TASK 78-31-49-400-020).
B.Hydraulic leakage	No leakage permitted	If there is leakage, check nipples for correct torque. (Ref. AMM TASK 78-31-49-400-017) or (Ref. AMM TASK 78-31-49-400-020).
		If the leakage persists, replace the preformed packing. (Ref. AMM TASK 78-31-49-400-020)
		If the leakage persists, replace the swivel joint. (Ref. AMM TASK 78-31-49-000-017) and (Ref. AMM TASK 78-31-49-400-017) or (Ref. AMM TASK 78-31-49-000-020) and (Ref. AMM TASK 78-31-49-400-020).
4.Inspect the line bracket and the related hardware for:
A.Damage	No damage permitted	If you find some damage, replace the defective part. (Ref. AMM TASK 78-31-49-000-018) and (Ref. AMM TASK 78-31-49-400-018) or (Ref. AMM TASK 78-31-49-000-021) and (Ref. AMM TASK 78-31-49-400-021).

5. Close-up
Subtask 78-31-49-410-060-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 thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 78-31-49-440-050-A ** ON A/C NOT FOR ALL

B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 78-31-49-410-061-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:38:05 UTC