Tube chilling time ---------------------------------------------------------------------| Tube | Tube DIA | Aluminum | Stainless steel | Titanium | | Size | in. | mm | seconds | seconds | seconds | |------|----------|---------|----------|-----------------|----------| | -04 | 1/4 | 6.35 | 40 | 40 | 40 | |------|----------|---------|----------|-----------------|----------| | -06 | 3/8 | 9.525 | 40 | 50 | 50 | |------|----------|---------|----------|-----------------|----------| | -08 | 1/2 | 12.70 | 40 | 60 | 60 | |------|----------|---------|----------|-----------------|----------| | -10 | 5/8 | 15.875 | 50 | 80 | 80 | |------|----------|---------|----------|-----------------|----------| | -12 | 3/4 | 19.050 | 70 | 110 | 100 | |------|----------|---------|----------|-----------------|----------| | -16 | 1 | 24.400 | 110 | 160 | 130 | |------|----------|---------|----------|-----------------|----------| | -20 | 1-1/4 | 31.750 | 150 | 180 | 140 | |------|----------|---------|----------|-----------------|----------| | -24 | 1-1/2 | 38.100 | 150 | 180 | 140 | ---------------------------------------------------------------------
(8) Install the coupling.
(a) If you use the CRYOFIT couplings with plastic installation packages (as supplied pre-assembled from the factory):
1 Put on the gloves.
_
2 With the pre-chilled tongs, remove the coupling from the
_
workbox.
3 Hold the coupling with gloved fingers.
_
4 Move the coupling on the tube end that does not have the
_
installation stop.
5 Align the tubes.
_
6 Move the coupling back on the joint against the installation
_
stop.
(b) If increased recovery time is necessary, you must put the coupling in the extended time tool:
1 Put on the gloves.
_
1EFF : ALL 1 20-23-11Page A264 1 1 Feb 01/05R 1 1 1CES 1
2_ With the pre-chilled tongs, remove the coupling from the
workbox and remove the plastic installation package. Put the
coupling back in the workbox.
3_ With the tongs, remove the pre-chilled extended time tool from
the workbox and put it in your free gloved hand.
4_ Squeeze the tabs to open the jaws.
5_ Hold the extended time tool over the workbox, hold the
coupling with the tongs and put it in the jaws (of the
extended time tool).
6_ Carefully let the extended time tool fall back in the workbox.
7_ When the extended time tool is ready for installation (boiling
stopped):
- with the tongs, remove the extended time tool coupling from
the workbox
- hold the tool with gloved fingers
- move the tool on the tube end that does not have the
installation stop
- align the tubes
- move the tool back on the joint against the installation
stop.
(9) Remove the installation tool.
(a)
Let the coupling recover.
(b)
Remove the plastic installation package or the extended time tool.
(10) Do a visual check.
(a) Make sure that the two ends of the coupling touch the installation marks. If the two ends of the coupling are not on the installation marks, the repair is not satisfactory. To make the repair satisfactory you can:
-cut out the coupling
-install a small length of new tube with two couplings (splice).
1EFF : ALL 1 20-23-11Page A265 1 1 Feb 01/05R 1 1 1CES 1
5. Close-up
________
Subtask 20-23-11-860-054
A. Put the aircraft back to its initial configuration.
(1)
Pressurize the hydraulic reservoirs (Ref. TASK 29-14-00-614-002).
(2)
If necessary, fill the hydraulic reservoirs:
-with a hand pump (Ref. TASK 12-12-29-611-001) - or with a hydraulic cart (Ref. TASK 12-12-29-611-002)
(3)
Pressurize the hydraulic systems:
-
for the Green system (Ref. TASK 29-10-00-863-001)
-
for the Yellow system (Ref. TASK 29-10-00-863-002)
-
for the Blue system (Ref. TASK 29-10-00-863-003).
(4)
Make sure that there is no leakage in the repaired area.
(5)
Bleed the related hydraulic system:
(a)
For the Green system:
-
upstream of the engine pump (Ref. TASK 29-00-00-870-001)
-
upstream of the PTU (Ref. TASK 29-00-00-870-002)
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(49)
