2.
Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-23-11-991-053 Fig. 201 20-23-11-991-054 Fig. 202 20-23-11-991-055 Fig. 203
3. Job Set-up
__________ Subtask 20-23-11-869-058
A. Not Applicable
4. Procedure
_________ Subtask 20-23-11-210-057
A. Permissible Damage and Defects on Hydraulic Tubing (Ref. Fig. 201/TASK 20-23-11-991-053, 202/TASK 20-23-11-991-054, 203/TASK 20-23-11-991-055)
NOTE : This topic is not applicable to the engine tubes. Refer to the
____
engine manufacturer for repairs of the engine tubes.
(1) Permissible repair Generally you repair a tube with a tube made of the same material, but if a tube made of the same material is not available, you can repair the tubes as follows:
-aluminum alloy (6061-T6) tubes with CRES (21.6.9) or Titanium alloy (Ti A3V 2.5) tubes,
-CRES (21.6.9) tubes with Titanium alloy (TI A3V 2.5) tubes (except in the pylon).
Permissible Tube Defect Depth - Light-Alloy Tube Material
Figure 201/TASK 20-23-11-991-053
Permissible Tube Defect Depth - Stainless-Steel Tube Material
Figure 202/TASK 20-23-11-991-054
Permissible Tube Defect Depth - Titatium-Alloy Tube Material
Figure 203/TASK 20-23-11-991-055
-titanium alloy (Ti A3V 2.5) tubes with CRES (21.6.9) tubes. NOTE : If you repair aluminum alloy or Titanium alloy tubes with CRES
____ tubes, think of the weight penalty.
(2) Permissible damage and defects NOTE : When damage or defects on tubing is more than the permissible
____ limits given below, you must discard the tubing or repair it as shown in this topic.
(a) Permissible limits for traces of impact and surface defects. NOTE : Surface defects are discontinuities such as:
____
- nicks,
- scratches,
- cracks and forging laps,
- scores,
- bends,
- corrosion pits.
1_ Sharp-bottomed surface defects:
- maximum: 5 % of tube wall thickness.
2_ Round-bottomed surface defects:
- maximum: 10 % of tube wall thickness.
NOTE : Sharp-bottomed surface defects and traces of impact are____
damage with a 90 degrees or less angle at the bottom.
All others are round-bottomed.
3_ Sharp-bottomed traces of impact:
- not permitted.
4_ Round-bottomed traces of impact:
- maximum: 2 % of tube nominal diameter.
NOTE : Length or width of trace of impact must not be more____
than 5 mm (0.1968 in.). When there is a surface defect
with a sign of dent, do an analysis of each type of
damage.
TASK 20-23-11-911-001
Installation of the Tubing
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific Grade No. 320 Emery Cloth
B. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R Material No. 02-003 F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00) Material No. 04-004 USA MIL-PRF-23827 TYPE I SYNTH.ESTER BASED GREASE HIGH PRESSURE (Ref. 20-31-00) Material No. 04-012 USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-12-29-611-001 12-12-29-611-002
20-21-12-911-001
20-28-00-912-006 29-00-00-864-001
29-00-00-870-001
R R R R 29-00-00-870-002 29-00-00-870-003 29-00-00-870-004
R R R R R R 29-00-00-870-005 29-00-00-870-006 29-00-00-870-007 29-00-00-870-008
R R 29-00-00-870-009 29-00-00-910-002 29-10-00-863-001 29-10-00-863-002 29-10-00-863-003
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 STANDARD PRACTICES-AIRFRAME(19)