3. Job Set-up
__________
Subtask 20-22-00-941-052
A. Not Applicable
4. Procedure
_________
Subtask 20-22-00-911-051
A. Installation of STA-LOK Nuts and Lockwashers (Ref. Fig. 201/TASK 20-22-00-991-001, 202/TASK 20-22-00-991-002, 203/TASK 20-22-00-991-003)
(1)
Make sure that the grip length of the pin/bolt is more than the minimum.
(2)
Use the tool wrenches-notched, tightening of nuts STA-LOK NSA5454 (SL90-315) (Ref. Table 2) and the tool-installation, tab washers STA-LOK NSA5454 (SL90-313) (Ref. Table 3).
(3)
Define the torque value for the nut (1) (Ref. Table 2). NOTE : The table 2 gives the standard torque values. Obey the special
____ torque values given in the maintenance tasks.
(4)
Clean the pin/bolt with CLEANING AGENTS (Material No. 11-004).
(5)
Examine the nut (1), the pin/bolt (2) and the lockwasher (3). Make sure that they are in good condition.
(6)
Apply the COMMON GREASE (Material No. 04-004) on the threads of the pin (2) to make the installation of the nut (1) easier.
(7)
Install the nut (1) on the pin/bolt (2). Install the tool wrenches-notched, tightening of nuts STA-LOK NSA5454 (SL90-315) on the nut.
(8)
Use the torque wrench to TORQUE the nut (1) to the correct value.
(9)
Install the lockwasher (3) on the threads of the pin/bolt (2). Make sure that the tangs (4) of the lockwasher (3) align with the slots of the nut (1).
(10) Adjust the tool-installation, tab washers STA-LOK NSA5454 (SL90-313) so that the inner face of the tool (8) core aligns with the outer face of the tool (9) body.
R NOTE : For the nut STA-LOK SL40290, there is no special tool.
____ (11) Engage the 2 lugs of the tool through the slots (5) of the nut (1).
NOTE : If there is not sufficient space at the end of the pin/bolt,
____ use the special tool-installation, tab washers STA-LOK NSA5454 (SL90-309). (Ref. Fig. 202/TASK 20-22-00-991-002) (Ref. Table 4) Turn the tool core clockwise. Install the tool on the pin/bolt (2). Turn the tool core counterclockwise until the lugs fit into the available slots (5) of the nut (1).
(12)
Turn the body of the tool counterclockwise (45 deg (45.0000 deg) approximately).
(13)
Engage the circlip (6) of the lockwasher (3) in the groove (7) of the nut (1). To do this, hold the body of the tool with one hand to stop its rotation. Turn the tool core with the wrench.
NOTE : You must hear a click when the circlip engages fully in the
____
groove (7).
(14)
Loosen the tool core. Turn the tool body clockwise until the tangs
(4) of the lockwasher (3) align with the slots (5) of the nut (1).
(15)
Remove the tool.
1EFF : ALL 1 20-22-00Page 208 1 1 Nov 01/01R 1 1 1CES 1
LINES - DESCRIPTION AND OPERATION
_________________________________
1. General_______ This section deals with the installation and reparation of rigid lines on the aircraft.
A. Hydraulic Lines
(1) Thickness of hydraulic lines The following table gives the thicknesses of hydraulic lines, as a function of diameters and materials used.
---------------------------------------------------------------| | Thickness | | Nominal |---------------------------------------------| Diameter | Stainless | Light Alloy | Titanium | | | Steel 21.6.9 | 6061.T6. | Ti 3AL 2.5V | ---------------------------------------------------------------| in. | mm | in. | mm | in. | mm | in. | mm | ---------------------------------------------------------------| 1/4 | 6.35 | 0.016 | 0.41 | 0.035 | 0.89 | 0.016 | 0.40 | | 3/8 | 9.53 | 0.020 | 0.51 | 0.035 | 0.89 | 0.019 | 0.48 | | 1/2 | 12.70 | 0.026 | 0.66 | 0.035 | 0.89 | 0.026 | 0.66 | | 5/8 | 15.88 | 0.033 | 0.84 | 0.035 | 0.89 | 0.032 | 0.81 | | 3/4 | 19.05 | 0.039 | 0.99 | 0.035 | 0.89 | 0.039 | 0.99 | | 1 | 25.40 | 0.052 | 1.32 | 0.048 | 1.22 | 0.051 | 1.30 | | 1.1/4 | 31.75 | 0.024 | 0.61 | | | | | | 1.1/2 | 38.10 | 0.024 | 0.61 | 0.035 | 0.89 | | | ---------------------------------------------------------------
INSTALLATION AND REPAIR OF TUBING - MAINTENANCE PRACTICES
_________________________________________________________
TASK 20-23-11-200-001 Permissible Damage and Defects on Hydraulic Tubing
1.
Reason for the Job
__________________
Self Explanatory
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