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4) Set the fuel selector to "LEFT" or "RIGHT" position.
5) Bleed the fuel system - refer to 12-11-02.
AAAA
Validity : S / N 1 - 730 with check valve
28-20-05 Page 401
28
(BA) SEP 02
CAUTION MAKE SURE THAT THE SELECTED TANK CONTAINS FUEL BEFORE ACTUATING THE ELECTRIC PUMP.
6) Perform a leakage test with the fuel system pressurized - refer to 28-00-00.
7) Check for leaks.
8) Mark with a red paint line unions (7) and (9) and nuts of tubes (2) and (6).
9) Remove the drain pan.
10) Make sure all the tools and materials are removed and the work area is clean and free from debris.
11) Install the engine cowlings - refer to 71-10-01.
12) Perform a test run-up - refer to 05-30-02.
1 - Firewall
2 - Tube
3 - Fuel electric pump
4 - Bleed
5 - Filter
6 - Tube
7 - Union
8 - Check valve
9 - Union
10 - Union
Check valve - Removal / Installation
Figure 401
WA
Validity : S / N 1 - 730 with check valve
28-20-05Page 403
(BA) SEP 02
PAGE INTENTIONALLY LEFT BLANK
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Validity : S / N 1 - 730 with check valve
28 20-05Page 404
(BA) SEP 02
INDICATION SYSTEM
DESCRIPTION AND OPERATION
1. GENERAL
The main function of the indication system is to provide the pilot with information about fuel pressure and
quantity.
The indication system includes :
- gages,
- fuel pressure switch,
- microswitch of selector valve indicator light,
- tank indicators fitted into engine monitoring cluster - refer to 31-10-00,
- pressure indicator light of the electric pump on advisory panel - refer to 31-50-00,
- tank selector valve indicator light on advisory panel - refer to 31-50-00,
- fuel flow indicator - refer to 73-30-00,
- fuel flow totalizer - refer to 73-30-00 (option).
Option Pre-MOD. 171
- low level detector,
- low level indicator light on advisory panel - refer to 31-50-00.
Post-MOD. 171
- low level detector,
- low-level double indicator light.
2. LOCATION (Figures 1 and 1A)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
Gage 4 510 / 610 512,516 / 612,616 28-40-01
Fuel pressure switch 1 100 121,131 28-40-03
Microswitch of selector valve indicator light 1 210 / 28-40-00
Low level detector 2 510 / 610 513 / 613 28-40-04
Engine monitoring cluster 1 251C / 31-10-00
Advisory panel 1 251L / 31-50-00
Fuel flow indicator 1 251 R / 73-30-00
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本文链接地址：TB20 MAINTENANCE MANUAL 28 FUEL TB20飞机维护手册 燃油(35)
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