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PAGE INTENTIONALLY LEFT BLANK AAAA Validity : OPT or STD Post-MOD. 151 37-11-00 (BA) Page 4 JUN 01 NORMAL DISTRIBUTION REMOVAL / INSTALLATION 1. REMOVAL OF THE REGULATING VALVE (Figure 401) A. Tools and consumable materials - Blanking caps and plugs B. Procedure 1) Remove engine cowling 121 - refer to 71-10-01. 2) If installed, remove inspection door 211 L. Otherwise, remove inspection door 212L - refer to 06-30-00. 3) Loosen clamp (2) and disconnect hose (1). Blank off. 4) Loosen clamps (6) and disconnect hoses (5). Blank off. 5) Mark the wires and disconnect pressure switch (8) if installed. 6) Remove nut (3). 7) Remove regulating valve (4) equipped with shim (9). 8) If necessary, remove and discard regulating valve filter (7). 2. INSTALLATION OF THE REGULATING VALVE (Figure 401) A. Tools and consumable materials - Varnish (TB 07-906) B. Procedure 1) Remove the blanking caps and plugs. 2) If removed, install a new filter (7) on regulating valve (4). 3) Using nut (3), secure regulating valve (4) equipped with shim (9) to firewall (10). 4) Connect hoses (5). Moderately tighten clamps (6). 5) If installed, connect pressure switch (8) as marked during removal. Lock with varnish (TB 07-906). 6) Connect hose (1). Moderately tighten clamp (2). 7) Make sure all the tools and materials are removed and the work area is clean and free from debris. 8) Install inspection door 211 L (if installed) or 212L - refer to 06-30-00. 9) Install engine cowling 121 - refer to 71-10-01. 10) Test the normal distribution system - refer to Page 501. AAAA Validity : OPT or STD Post-MOD. 151 37-11-00Page 401 (BA) SEP 04 1 2 73 Regulating valve - Removal / Installation Figure 401 WA Validity : OPT or STD Post-MOD. 151 37-11-00Page 402 (BA) SEP 04 NORMAL DISTRIBUTION ADJUSTMENT / TEST 1. ADJUSTMENT OF THE REGULATING VALVE (Figure 501) A. Tools and consumable materials None B. Procedure 1) If installed, remove inspection door 211 L - refer to 06-30-00. Otherwise, tilt the L.H. instrument panel. NOTE : If inspection door 211 L is not installed, the following operations are to be performed from the cockpit. 2) Straighten locking tabs (4). 3) Start the engine - refer to 05-30-01. 4) Display 2000 rpm. 5) Adjust flow cock (3) until pressure indicator (5) reads 5 ± 0.1 in.Hg. 6) Shutdown the engine - refer to 05-30-01. 7) Bend locking tabs (4) of flow cock (3). 8) Make sure all the tools and materials are removed and the work area is clean and free from debris. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 37 真空 TB20飞机维护手册(5) |
