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9) Push upwards, rotate 1/4 of a turn, then pull pallet (4) downwards to remove filter (2). 2. REPLACEMENT OF THE BLEED (Figure 402) A. Tools and consumable materials - Torque wrench 0 - 177 lbf.in (0 - 20 N.m) - Socket 0.75 in (19 mm) - Ring spanner 0.83 in (21 mm) - Loctite (TB 08-002) or equivalent B. Procedure WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL SYSTEM — REFER TO 28-00-00. NOTE : Bleed, P/N 002400 AA000 NAOA is replaced with bleed, P/N 002400 AA000 NDOB, with delivery of Kit 03037 000 000 NDOA. 1) Remove bowl (3) - refer to Paragraph 1. 2) Secure, in a vice, an extension with a socket 0.75 in (19 mm). 3) Engage bowl internal nut (2) on this socket (bowl overturned). ABAB Validity : S / N 1 - 730 28 20-02Page 401 (CA) SEP 02 4) Loosen bleed with a ring spanner 0.83 in (21 mm). NOTE : The effort to be performed during loosening is important because it is safetied with Loctite. 5) Clean bowl (3) at the level of the bearing surface between bleed seal and internal nut. CAUTION : THE PRODUCT MUST BE COMPATIBLE WITH HYDROCARBONS AND RECOMMENDED DRYING TIME MUST BE APPLIED. 6) Apply a few drops of Loctite (TB 08-002) to nut (2) thread - refer to 20-00-08. 7) To install "B" index bleed, reverse removal instructions. Make sure 0-ring (1) is correctly positioned. 8) Torque nut (2) - refer to 20-00-01. 9) Install bowl (3) - refer to Paragraph 3. 3. INSTALLATION OF THE FILTER (Figure 401) A. Tools and consumable materials - Stainless steel Iockwire, dia. 0.025 in (0.6 mm) B. Procedure WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL SYSTEM — REFER TO 28-00-00. CAUTION : AFTER 2 CLEANING PROCEDURES, FILTER (2) MUST BE REPLACED. 1) Clean or replace filter (2). Engage it fully into filter assembly (6) and turn by a quarter of a turn. Make sure filter (2) is correctly locked. 2) Install a new 0-ring on bowl (1) upper section. CAUTION : FILL UP BOWL (1) WITH FUEL. 3) Fill up bowl (1) with fuel and engage it correctly into filter assembly (6). 4) Install and tighten clamp (5). 5) Set the fuel selector to "LEFT" or "RIGHT" position. 6) Bleed the fuel system - refer to 12-11-02. 7) Check bleed for leaks. CAUTION : MAKE SURE THAT THE SELECTED TANK CONTAINS FUEL BEFORE ACTUATING THE ELECTRIC PUMP. 8) Perform a leakage test with the fuel system pressurized - refer to 28-00-00. 9) Check for leaks. 10) Lockwire clamp (5). 11) Remove the drain pan. 12) Make sure all the tools and materials are removed and the work area is clean and free from debris. 13) Install the engine cowlings - refer to 71-10-01. 14) Perform a test run-up - refer to 05-30-02. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 28 FUEL TB20飞机维护手册 燃油(26) |
