(2)
Disconnect the isolation coupling of the PTU (Ref. TASK 29-23-00-860-001).
(3)
If the electrical power is not necessary for other maintenance tasks, de-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002). Then, it is not necessary to open the LGCIU circuit breakers.
(4)
If the electrical power is necessary, do the precautions for flight configuration (Ref. TASK 32-00-00-860-001) before you open the LGCIU circuit breakers.
Subtask 32-31-73-865-077
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
Subtask 32-31-73-010-061
D. Get Access
(1)
Open the NLG doors (Ref. TASK 32-22-00-010-001).
(2)
Install a SAFETY PIN - NLG DOOR (98D32203502000) in each NLG door (Ref. TASK 32-00-00-481-002).
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4. Procedure_________
(Ref. Fig. 510/TASK 32-31-73-991-024)
Subtask 32-31-73-220-085
A. Dimensional Check
(Ref. Fig. 510/TASK 32-31-73-991-024)
(1)
Measure and record the dimensions X and Z (System 1) for the proximity sensor 18GA:
-
dimension X must be 6.5 mm (0.2559 in.) +/- 0.1 mm (0.0039 in.)
-
dimension Z must be 1.5 mm (0.0590 in.) +/- 0.1 mm (0.0039 in.).
(2)
Measure and record the dimensions Z and X (System 1) for the proximity sensor 19GA:
-
dimension Z must be 1.5 mm (0.0590 in.) +/- 0.1 mm (0.0039 in.)
-
dimension X must be 6.5 mm (0.2559 in.) +/- 0.1 mm (0.0039 in.).
(3)
If the dimensions are incorrect, do the adjustment procedure in Para
4.G.
Subtask 32-31-73-865-084
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/ELAC1/NORM/SPLY 15CE1 B11 49VU FLIGHT CONTROLS/FCDC1/SPLY 20CE1 B10 49VU FLIGHT CONTROLS/SEC1/NORM/SPLY 21CE1 B08 49VU L/G/LGCIU/SYS1/NORM 1GA C09 49VU NAV PROBES/ADIRU 1/AND AOA 1/26VAC 5FP1 F07 49VU NAV PROBES/ADIRU1/115VAC 4FP1 F06
**ON A/C 001-049, 051-061, 101-105, 201-203,
121VU ADIRS/ADIRU/3/26VAC AND AOA 5FP3 N08
121VU ADIRS/ADIRU/3/115VAC 4FP3 N06
**ON A/C ALL
121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35
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-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34 121VU FLIGHT CONTROLS/FCDC2/SPLY 20CE2 Q20 121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19 121VU FLIGHT CONTROLS/ELAC2/NORM/SPLY 15CE2 R20
R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
121VU ADIRS/ADIRU/3/26VAC AND AOA 5FP3 N07 121VU ADIRS/ADIRU/3/115VAC 4FP3 N05
**ON A/C ALL
Subtask 32-31-73-865-085
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU ENGINE/ENG2/OIL/PRESS 2EN2 N42 121VU ENGINE/ENG1/OIL/PRESS 2EN1 N40
Subtask 32-31-73-582-059
D. Lift the Aircraft
(1) Lift the aircraft on jacks (Ref. TASK 07-11-00-581-003).
Subtask 32-31-73-010-062
E. Get Access
(1)
Put the access platform in position below the applicable zone 123(124).
(2)
Make sure that a SAFETY PIN - NLG DOOR is installed in each NLG door (Ref. TASK 32-00-00-481-002).
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NLG Downlock Proximity Sensors 18GA, 19GA Figure 510/TASK 32-31-73-991-024- 13 (SHEET 1)
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NLG Downlock Proximity Sensors 18GA, 19GA Figure 510/TASK 32-31-73-991-024- 23 (SHEET 2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM LANDING GEAR 起落架5(71)
