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5) Install plunger valve (7) equipped with union (9) and valve end (8) on valve (12).
NOTE : Make sure the plunger of plunger valve (7) is fully loosened before installation on valve (12).
6) Connect pipe (6) to union (9) and to a nitrogen (TB 05-913) cylinder or dry compressed air cylinder equipped with a pressure reducer (3) and a pressure gage (2).
NOTE : Pipe (6) is fitted with a pressure gage (5) (with 1 % sensitivity and 1 % accuracy), an isolating valve (4) and a bleed valve (10).
7) Close isolating valve (4) and bleed valve (10).
8) Tighten the plunger of plunger valve (7).
9) Once stable, read the pressure displayed on pressure gage (5).
AGAC
Validity : S / N 1 - 9999 12 14-02Page 301
(EA) JUN 02
 
10) Compare this pressure to the pressures indicated in the table in Paragraph C.
- If the measured pressure is higher, adjust with bleed valve (10).
- If the measured pressure is correct, go to step 20).
- If the measured pressure is lower, perform the following operations.
11) Fully loosen pressure reducer (3) adjusting screw.
WARNING : OPEN THE NITROGEN OR DRY AIR CYLINDER WITH CARE.
12) Open nitrogen cylinder (1), establish the theoretical charging pressure of the shock-absorber - refer to Paragraph C., read on pressure gage (2) of pressure reducer (3).
13) Open isolating valve (4) progressively to avoid damaging the shock-absorber when charging.
14) Once the shock-absorber has been charged to the previously displayed pressure, close isolating valve (4).
15) Allow a few minutes for stabilization and read the pressure on pressure gage (5). Correct the pressure if necessary.
16) Allow the assembly to stand for ten minutes approximately.
17) On the nose landing gear, make sure there are no leaks at scraper ring (13) located at the lower section of the leg and the pressure displayed on pressure gage (5) has remained stable. If not, locate and repair leaks.
18) On the main landing gear shock-absorber, make sure there are no leaks at scraper ring (13) located at the upper section of the body and the pressure displayed on pressure gage (5) has remained stable. If not, locate and repair leaks.
19) Close nitrogen cylinder (1).
20) Fully loosen the plunger of plunger valve (7) to release the valve core.
21) Open bleed valve (10) to make pressure drop in pipe (6).
22) Fully loosen pressure reducer (3) adjusting screw.
23) Remove valve end (8) from valve (12).
24) Check valve (12) core for leaks.
25) Install valve cap (11).
26) Remove the charging equipment.
27) Make sure all the tools and materials are removed and the work area is clean and free from debris.
28) If removed, install the engine cowlings - refer to 71-10-01.
29) Lower the aircraft to ground and remove the jacks - refer to 07-10-00.
　
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本文鏈接地址：TB20 MAINTENANCE MANUAL 12 SERVICING TB20飛機維護手冊 12 保養(yǎng)(42)