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 
　
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